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Year Vol.
(Issue) Pages Author(s) Title

1987 10(1) 6-8 Peter C. Boyce A new species of Arum L. from Crete
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ABSTRACT: Arum purpureospathum Boyce sp. nov. is described.

1987 10(4) 14-15 Peter C. Boyce A new subspecies of Biarum davisii Turrill from Turkey
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ABSTRACT: Biarum davisii subsp. marmarisensis Boyce, subsp. nov. is described.

1993 16 31-32 Peter C. Boyce A possible defense mechanism in Scindapsus latifolius (Araceae: Monsteroideae)
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ABSTRACT: Superficial exposure of trichosclereids is reported in Scindapsus latifolius M. Hotta (1966) .

1999 22 2 Peter C. Boyce From the editor
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ABSTRACT: Taking up the editorship of Aroideana is very much a mixed challenge. One half of me feels excited and, dare I say, honored, to be considered as editor of this splendid journal, the other half feels daunted at the prospect of stepping into Amy's shoes and taking up the job of continuing the impressive progress of what is now, justifiably, regarded as the world's premier publication place of all matters relating to aroids.

1999 22 90-91 Peter C. Boyce Biarum mendax (Araceae: Areae) a new species from southwestern Spain
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ABSTRACT: Biarum mendax, a new species related to the B. kotschyi complex is described from southwest Spain.

2000 23 3 Peter C. Boyce From the editor
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2000 23 48-55 Wilbert L. A. Hetterscheid, Peter C. Boyce A reclassification of Sauromatum Schott and new species of Typhonium Schott (Araceae) (Buy)
ABSTRACT: The generic status of Sauromatum is discussed and as a result it is merged into Typhonium, resulting in two new combinations. Additionally, two new species of Typhonium are described.

2001 24 2 Peter C. Boyce Editorial
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2001 24 80-93 Josef Bogner, Peter C. Boyce, C.M. Sakuragui A revision of Alloschemone Schott (Araceae: Monstereae) (Buy)
ABSTRACT: The genus Alloschemone Schott is revised. One new species, A. inopinata Bogner & P. C. Boyce, is recognized, and an expanded description of A. occidentalis (Poepp.) Engl. & K. Krause is presented. The distinguishing characters of the genus are discussed, especially with regard to the genus Scindapsus Schott, from which Alloschemone has been considered inseparable. Both genera have unilocular ovaries with basal placentation with one ovule; Alloschemone differs from Scindapsus by a pinnatifid leaf lamina (entire in Scindapsus), shoot architecture, anatomical differences, and Neotropical distribution (Scindapsus Paleotropical). Our new species has fused filaments, a unique character in Monstereae, and further differs from A. occidentalis by the narrower leaf pinnate separated by an oblong sinus. Seeds, often diagnostically very useful in Monstereae, are still unknown in Alloschemone and are highly desirable.

2004 27 205-211 Peter C. Boyce A review of Epipremnum (Araceae) in cultivation (Buy)
ABSTRACT: A review of Epipremnum species in cultivation is presented in order to clarify their identities and the names that should be applied.

2006 29 2-36 Peter C. Boyce A taxonomic revision of Biarum (Araceae) (Buy)
ABSTRACT: A taxonomic revision of Biarum is presented. Hitherto species-ranked B. galianii is reduced to a subspecies of B. tenuifolium. Hitherto subspecific (to B. davisii) B. marmarisense is raised to full species rank. The names Biarum abbreviatum, B. aleppicum, B. anguillare, B. arundanum, B. bovei ssp. disparvar. purpureum, B. bovei ssp. dispar var. zanonii, B. cupanianum, B. platyspathum, B. spruneri, B. straussi, B. tenuifolium var. latifolium, B. zelebori, Cyllenium carduchorum, Ischarum crispulum, 1. jraasianum, 1. kotschyi and 1. nobile are lectotypified. Ischarum pyrami is epitypified. A key to all taxa is provided.

2006 29 132-137 Peter C. Boyce Arum -- a decade of change (Buy)
ABSTRACT: When published in 1993 The Genus Arum (Boyce, 1993) presented for the first time in 70 years, and ever in English, a tool to identify with some degree of confidence all of the 25 Arum species and their subordinate taxa then recognized. Inevitably since publication there have been changes in species delimitation as well as new discoveries, such that the species tally for Arum now stands at 28. Changes of note since 1993 include the recognition of two species treated then at subspecific rank within A. orientale Bieb. [A. longispathum Reich. & A. sintenisii (Eng!.) P. C. Boyce] while a further species [A. alpinariae (K. Alpinar & R. R. Mill) P. C. Boyce], treated then as a subspecies of A. elongatum Steven, is formally raised to the level of species in this paper. Additional study has resolved a number of issues including application of names for the species hitherto called A. alpinum Schott & Kotschy and the status of subordinal taxa in A. italicum Miller. These are all detailed below together with sundry other observations. While much work remains to be done on Arum it seems a worthwhile exercise to present an overview of these changes wrought in the past decade and to cast some pointers for work that still remains to be tackled.

2007 30 56-70 Peter C. Boyce Studies on Schismatoglottideae (Araceae) of Borneo IV: Preliminary observations of spathe senescence mechanics in Schismatoglottis Zoll. & Moritzi in Sarawak (Buy)
ABSTRACT: Recent alpha-taxonomic studies of Schismatoglottis Zoll. & Moritzi provide a sufficiently stable framework to facilitate taxonomically robust multidisciplinary research, notably molecular phylogenetic, ecological and phenological studies including analyses of morphological adaptations to specialized ecology (in particular rheophytism), and comparison of mechanical processes linked to pollination strategies (notably spathe senescence). Such data will later be mapped onto molecular-generated phylogenetic trees in order to analyse their origins. The various processes by which the spathe limb is shed during or post anthesis is the subject here of a preliminary discussion. The significance of these data is reviewed in terms of the currently proposed informal infrageneric groupings.

2007 30 71-81 Peter C. Boyce Studies on Schismatoglottideae (Araceae) of Borneo V: Preliminary ecological observations of Schismatoglottis (Araceae: Schismatoglottideae) on Matang Massif (Buy)
ABSTRACT: The family Araceae in Sarawak comprises 31 genera, with more than 350 species, while on the Matang Massif alone 35 species in 14 genera are recorded to date. Of these Schismatoglottis Zollo & Moritzi is the richest and most diverse genus with nine species (Schismatoglottis asperata Engl., S. conoidea Engl., S. grabowski/ Engl., S. mayoana Bogner & M. Hotta, S. motleyana (Schott) Engl., S. multiflora Ridl., S. cf. neroosa Ridl., S. tecturata (Schott) Engl., S. wallichii Hook f) belonging to four of the informal species groups sensu Hay & Yuzammi (2000). Two of these nine, (S. mayoana and S. cf. nervosa) are endemic to Matang. Perhaps the most interesting aspect of these taxa is their ecological diversity. This paper will highlight these ecological aspects and speculate on the speciation processes involved in bringing about such diversity in a single genus.

2007 30 145-161 Peter C. Boyce Germinating aroid seeds - some observations (Buy)
ABSTRACT: Many aroiders have questions about the best way to grow aroids from seed. A simple question, but like most simple and quick requests, the answer is far from short and easy. Since a number of articles relating to other methods of propagation had been submitted for this issue, it seemed to be a good idea to round these out by inviting contributions from some of the most active members of the society. These were the responses, sometimes going further than the practical by reminding us of the importance of increasing and spreading aroids in collections since so much of their habitat is being lost.

2008 31 148-154 A. Haigh, L. Lay, S. J. Mayo, L. Reynolds, M. Sellaro, Josef Bogner, Peter C. Boyce, Thomas B. Croat, Michael H. Grayum, R. Keating, Carla V. Kostelac, Alistair Hay, Wilbert L. A. Hetterscheid, M. Marcela Mora A new website for Araceae taxonomy on www.cate-araceae.org (Buy)
ABSTRACT: The development and current progress of the Cate-Araceae website is described and its relation to the aroid community discussed in the context of rapidly developing initiatives to migrate traditional descriptive taxonomy onto the internet (ETaxonomy).

2009 32 19-29 Peter C. Boyce The Pothos L. (Araceae: Pothoideae) in Thailand (Buy)

2010 33(0) 3-74 Peter C. Boyce, Sin Yeng Wong, April Pei Jen Ting, S. E. Low, S. L. Low, K. K. Ng, I. H. Ooi The Araceae of Borneo-The Genera (Buy Back Issue)

2010 33(0) 201-211 Lay Soon Tung, Sin Yeng Wong, Peter C. Boyce Studies on Homalomeneae (Araceae) of Borneo VI: Homalomena giamensis, a New Species from Sarawak, Malaysian Borneo, with Observations on its Pollination (Buy)

2011 34 24-29 Baharuddin Sulaiman, Peter C. Boyce Studies on Homalomeneae (Araceae) of Peninsular Malaysia V: Homalomena wallichii, Refound after over 190 Years (Buy)
ABSTRACT: Homalomena wallichi, collected just once since 1822 has long languished in taxonomic obscurity. It has recently been refound in the wild after more than 190 years and is here reinstated as a taxonomically sound species and as endemic to Peninsular Malaysia. Images of Wallich's original collection, and of the living plant in flower, are provided.

2011 34 30-36 Agung Kurniawan, Ni Putu Sri Asih, Bayu Adjie, Peter C. Boyce Studies on Homalomeneae (Araceae) of Borneo IX: A New Species of Homalomena Supergroup Chamaecladon from Kalimantan Timur, Indonesian Borneo (Buy)
ABSTRACT: Homalomena agens is described and illustrated as a new species of the Chamaecladon Supergroup from Kalimantan Timur, Indonesian Borneo. A brief overview of the recent publication history of Homalamena in the humid Asian tropics, together with a review of the taxonomy of the Chamaecladon Supergroup in Borneo, and a key to described species in Borneo, is provided.

2011 34 93-95 Peter C. Boyce The Quest for Understanding - Just What Makes it a 'New' Species?
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ABSTRACT: An overview of some of the skills, experience and thought processes involved in undertaking taxonomic and nomenclatural research is provided

2012 35(0) 3-23 Peter C. Boyce, Sin Yeng Wong The Araceae of Indomalaya I: Piptospatha N.E.Br. (Buy)
ABSTRACT: A review of the genus Piptospatha N.E.Br. is presented with new generic boundaries implemented since the last full revision. 10 species are recognized, two of them (P. marginata (Engl.) N.E.Br. & P. repens H.Okada & Tsukaya) recognized only recently as distinct species. Two species (P. angustifolia Engl. ex Alderw. and P. remiformis Ridl.) are treated as inadequately known. A key to accepted species is given, and all species are illustrated, the majority from living plants.

2012 35 24-28 Peter C. Boyce, David Wolfersberger Studies on Schismatoglottideae (Araceae) of Borneo XVIII: Additional observations on Schottariella mirifica (Buy)
ABSTRACT: Schottariella mirifica, the sole species of a Bornean endemic genus, is known from four localities on the Kanowit and Ai river catchments of western Sarawak, Malaysian Borneo. Based on recent fieldwork we here present expanded ecological information, and new morphological data, including descriptions and illustrations of the previously unknown mature infructescence.

2012 35(0) 96-102 Peter C. Boyce, Sin Yeng Wong Lost Aroids: On the taxonomic importance of relocating poorly collected species (Buy)
ABSTRACT: Aridarum montanum Ridl. and Piptospatha insignis N.E.Br. (Araceae: Schismatoglottideae), aroids originating from Borneo that are each known from a single collection, are discussed and illustrated. The history of their discovery is reviewed, together with what is known or speculated of their ecology. The biological significance of the collection locality of A. montanum is highlighted. The species’ individual importance to modern systematics is highlighted.

2013 36 8-29 Hoe Yin Chen, Tung Lay Soon, Peter C. Boyce Studies on Homalomeneae (Araceae) of Borneo XIII – New Species of Homalomena (Buy)
ABSTRACT: Five new Homalomena species are described from Sarawak, Malaysian Borneo: H. baangongensis L.S.Tung & Y.C.Hoe, H. gastrofructa S.Y.Wong, Y.C.Hoe & P.C.Boyce, H. ibanorum S.Y.Wong & P.C.Boyce, H. passa S.Y.Wong & P.C.Boyce, and H. velutipedunculata S.Y.Wong, Y.C.Hoe & P.C.Boyce. Based on morphological characteristics they are assigned to the Giamensis Complex [H. baangongensis], Hanneae Complex [H. gastrofructa, H. velutipedunculata], and Borneensis Complex [H. ibanorum] of the Cyrtocladon Supergroup, and to the Selaburensis Complex [H. passa] of the Homalomena Supergroup. Keys to informal taxa of Bornean Homalomena, and to the species of the above mentioned species complexes are provided. All described novelties are illustrated from living plants, and a comparative plate of the spadix of the five described species of the Borneensis Complex is provided.

2013 36 98-103 Peter C. Boyce Studies on Schismatoglottideae (Araceae) of Borneo XXIX—Piptospatha manduensis— The Ultimate Aroid Calciphile? (Buy)
ABSTRACT: Piptospatha manduensis A. Hay & Bogner is highlighted as a truly calciphilous aroid obligated to travertine in north eastern Indonesian Borneo. Based on new collections and cultivated plants an updated description is offered. A brief overview of the other very few calciphilous aroids in Borneo is presented, and, together with P. manduensis, all are illustrated.

2013 36E(1) 4-17 Peter C. Boyce Studies on Schismatoglottideae (Araceae) of Borneo XXXIII ? A review of the Schismatoglottis Tecturata Group, including description of a new species, Schismatoglottis evelyniae (Read)
ABSTRACT: Schismatoglottis evelyniae P.C.Boyce & S.Y.Wong is described as a taxonomically new species in the Tecturata Group, morphologically most similar to Schismatoglottis platystigma M.Hotta and S. petri A. Hay. Schismatoglottis evelyniae, S. platystigma, S. petri, and S. tecturata are illustrated from living plants. A key to the species of the Schismatoglottis Tecturata Group is provided.

2014 37(1) 9-32 Sin Yeng Wong, Low Shook Ling, Peter C. Boyce Studies on Schismatoglottideae (Araceae) of Borneo XXXV – Seven New species of Aridarum (Buy)
ABSTRACT: Seven new species of Aridarum are described and illustrated: Aridarum pendek S.Y.Wong, S.L.Low & P.C.Boyce and A. velutandrum S.Y.Wong, S.L.Low & P.C. Boyce [Sarawak, Malaysian Borneo]; A. alatense S.Y.Wong, S.L.Low & P.C.Boyce, A. surukense S.Y.Wong, S.L.Low & P.C. Boyce, and A. zygosetum S.Y.Wong, S.L.Low & P.C.Boyce [Kalimantan Barat and Kalimantan Tengah, Indonesian Borneo]; and A. hebe S.Y.Wong, S.L.Low & P.C.Boyce [Kalimantan Utara, Indonesian Borneo]. Aridarum caulescens var. angustifolium Bogner & Nicolson is shown to represent a further undescribed species from Sarawak, and is here published as Aridarum orestum S.Y.Wong, S.L.Low & P.C.Boyce. Together these seven novelties take the genus Aridarum to 21 accepted, described species. An identification key to all species is provided.

2014 37(1) 33-37 Peter C. Boyce, Sin Yeng Wong Studies on Homalomeneae (Araceae) of Borneo XIV – A New Rheophytic Species of Homalomena from Sarawak, Malaysian Borneo (Buy)
ABSTRACT: Homalomena stella P.C.Boyce & S.Y.Wong is described as a new rheophytic species and illustrated from living plants. Based on several shared morphological characteristics the possible affinity of H. stella with Homalomena havilandii Ridl. is highlighted.

2014 37(1) 38-43 Peter C. Boyce, Sin Yeng Wong Studies on Homalomeneae (Araceae) of Borneo XV: A Novel Limestone-Obligated Homalomena from SW Sarawak, Malaysian Borneo (Buy)
ABSTRACT: Homalomena selaburensis P.C.Boyce & S.Y.Wong is described as a taxonomic novelty of the Homalomena Supergroup from forested Karst limestone in Samarahan Division, SW Sarawak, and compared with the most similar species described so far from Sarawak (Homalomena passa S.Y.Wong & P.C.Boyce), and from Peninsular Malaysia (Homalomena curvata Engl.). An identification key is provided and Homalomena selaburensis is illustrated from living plants.

2014 37E(1) 11-16 Peter C. Boyce Studies on Schismatoglottideae (Araceae) of Borneo XXXIV – The Fruits of Schottariella mirifica (Read)
ABSTRACT: The fruits of Schottariella mirifica P.C. Boyce & S.Y. Wong are described and illustrated for the first time and shown to be dehiscent berries, the second recorded example of this fruit type for tribe Schismatoglottideae, and the third for the family Araceae. The berries of Schottariella mirifica dehisce basally with the shed portion of the berry containing 3–5 comparatively large seeds, each fully enclosed in a fleshy white aril.

2014 37E(1) 17-28 Peter C. Boyce Studies on Schismatoglottideae (Araceae) of Borneo XXXVII – Three enigmatic new species of Schismatoglottis from the "Heart of Borneo" (Read)
ABSTRACT: Three new species of Schismatoglottis of uncertain taxonomic affinity (S. camera-lucida P.C.Boyce & S.Y.Wong, S. gampsospadix P.C.Boyce & S.Y.Wong, and S. gui P.C.Boyce & S.Y.Wong) are described and illustrated from the north western part of the “Heart of Borneo”.

2014 37E(2) 4-10 Peter C. Boyce, Sin Yeng Wong Studies on Schismatoglottideae (Araceae) of Borneo XXXXIII: Fenestratarum culum - A new genus and species from Kalimantan Barat, Indonesian Borneo (Read)
ABSTRACT: Fenestratarum is described as a new genus of Tribe Schismatoglottideae, with a single novel species, Fenestratarum culum. Preliminary molecular analyses places Fenestratarum near the base of a clade comprised of Bakoa, Hottarum, two clades containing species currently assigned to Aridarum, and a clade of species presently included in Piptospatha.

2014 37E(2) 17-25 Sin Yeng Wong, Peter C. Boyce Studies on Schismatoglottideae (Araceae) of Borneo XXXX: Schismatoglottis petradoxa and S. tseui, new shale-obligate rheophytes of uncertain affinity (Read)
ABSTRACT: Two taxonomically new rheophytic species of Schismatoglottis of uncertain affinity, S. petradoxa S. Y. Wong & P. C. Boyce sp. nov. and S. tseui S. Y. Wong & P. C. Boyce sp. nov., are described and illustrated from forested shale waterfalls in central North Borneo.

2014 37E(2) 34-49 Sin Yeng Wong, Low Shook Ling, Peter C. Boyce Studies on Schismatoglottideae (Araceae) of Borneo XXXXII: Additional new species of Aridarum (Read)
ABSTRACT: Three new species of Aridarum are described and illustrated: Aridarum perplexum S. Y. Wong, S. L. Low & P. C. Boyce from Kalimantan Barat, Indonesian Borneo, Aridarum sabahense S. Y. Wong, S. L. Low & P. C. Boyce from Sabah, Malaysian Borneo, and Aridarum spissum S. Y. Wong, S. L. Low & P. C. Boyce from Sarawak, Malaysian Borneo. Together these novelties take the genus Aridarum to 24 accepted, described species. The new species inserted into an updated identification key to Aridarum species.

2014 37E(2) 50-55 Peter C. Boyce, Sin Yeng Wong, Abdul Sahal Studies on Schismatoglottideae (Araceae) of Borneo XXXXIV: Piptospatha nivea, a new species from Kalimantan Tengah, Indonesian Borneo (Read)
ABSTRACT: Piptospatha nivea is described and illustrated as new species, unique among Bornean Piptospatha by possessing a white spathe limb, and compared with the nearest most similar species, Piptospatha colata S.Y.Wong & P.C.Boyce. Aside from possessing a striking and unique inflorescence P. nivea represents an almost 300 km southerly extension to the known range of the genus.

2014 37E(2) 56-68 Sin Yeng Wong, Peter C. Boyce Studies on Schismatoglottideae (Araceae) of Borneo XXXXV: The flowering and fruit development of Schismatoglottis tecturata (Read)
ABSTRACT: The flowering and fruit development of Schismatoglottis tecturata (Schott) Engl.is illustrated.

2015 38(0) 40-179 Peter C. Boyce, Sin Yeng Wong Compendium Genera Aracearum Malesianum (Buy Back Issue)
ABSTRACT: A summary of the aroids of the Flora Malesiana region at the rank of genus is provided. Identification notes for each genus and, where appropriate, their major subdivisions are given. The last monograph and all subsequent key literature is cited for each genus, and also compiled as a general entry. All 42 of currently recognized indigenous Malesian aroid genera (excluding three genera of former Lemnaceae) are detailed, and illustrated.

2015 38E(1) 75-83 Peter C. Boyce Why is 'Flora Malesiana' Araceae not currently a practicable undertaking - Fenestratarum as an example (Read)
ABSTRACT: Flora Malesiana is a systematic account of the flora of Malesia, the plant-geographical unit spanning seven countries in Southeast Asia: Indonesia, Malaysia, Singapore, Brunei Darussalam, the Philippines, Timor Leste, and Papua New Guinea. The Araceae is one of the larger plant families of Malesia, currently comprising 42 described genera and, conservatively, about 1200 species. A substantial proportion of Malesian aroid species are either only recently named, or have yet to be formally described. Despite encouraging progress with regional monographic accounts in the1990s and early 2000s, notably for Alocasia, Schismatoglottis, Pothos, Epipremnum, and Rhaphidophora, the intervening years, marked by a significant increase in field-based research, have revealed an extraordinary wealth of novel diversity such that none of the terrestrial and rheophytic genera can be currently be considered adequately known. Highlighting increases in described species in the past 15 years, and drawing on the example of the recently described genus Fenestratarum, reasons why Flora Malesiana Araceae is not currently practicable are enumerated, and practicable alternatives proffered.

2015 38E(2) 4-9 Peter C. Boyce, Sin Yeng Wong Studies on Schismatoglottideae (Araceae) of Borneo XXXXVI: Fenestratarum mulyadii–A second species for a recently described genus (Read)
ABSTRACT: A second species of the recently established genus Fenestratarum is described, from Kalimantan Timur, Indonesian Borneo, as Fenestratarum mulyadii. This new species represents an over 600 km eastwards extension to the known range of the genus. Fenestratarum mulyadii is figured in colour, and compared to Fenestratarum culum in an identification key.

2015 38E(2) 10-22 Sin Yeng Wong, Peter C. Boyce Studies on Schismatoglottideae (Araceae) of Borneo XXXXVII – Aridarum ashtonii, a new species from the Hose Mountains, and notes on Aridarum burttii (Read)
ABSTRACT: Aridarum ashtonii is described as a new species from highland sandstones of the Hose Mountains, Kapit, Sarawak, Malaysian Borneo. Aridarum ashtonii has previously been confounded by the authors with Aridarum burttii, a species occurring on lowland riverine shales. Notes on Aridarum burttii are given and the purported origins of the Type specimen questioned. Aridarum ashtonii and A. burttii are illustrated from living plants, and a key to the five species of the Aridarum Burttii Complex is provided. Recognition of A. ashtonii takes Aridarum to 26 accepted, described species.

2015 38E(2) 23-30 Peter C. Boyce, Sin Yeng Wong Studies on Schismatoglottideae (Araceae) of Borneo XXXXVIII – Galantharum, a new genus for the Hottarum Clade (Read)
ABSTRACT: Galantharum is described as a new genus of Tribe Schismatoglottideae, with a single novel species, Galantharum kishii. Preliminary molecular analyses place Galantharum basal of a clade composed of Fenestratarum, Bakoa, Hottarum, two clades containing species currently assigned to Aridarum, and a clade of species presently included in Piptospatha.

2015 38E(2) 31-37 Sin Yeng Wong, Peter C. Boyce Studies on Schismatoglottideae (Araceae) of Borneo XXXXIX – Schismatoglottis antu , a new species allied to Schismatoglottis gui (Read)
ABSTRACT: Ongoing fieldwork in the north western part of the “Heart of Borneo” has revealed a new species of Schismatoglottis allied to the recently described and enigmatic Schismatoglottis gui and S. camera-lucida. This novelty is here described and illustrated as Schismatoglottis antu S. Y. Wong & P. C. Boyce, sp. nov.

2016 39(1) 4-12 Sin Yeng Wong, Peter C. Boyce Studies on Schismatoglottideae (Araceae) of Borneo LII – Piptospatha helix, another species with green pistils (Buy)
ABSTRACT: Piptospatha helix S. Y. Wong & P. C. Boyce is described from Kalimantan Barat, Indonesian Borneo, and compared with the four pre-existing species with which it shares green pistils. A key to all Piptospatha species with green pistils is provided, Piptospatha helix is figured from living plants, and from the nomenclatural Isotype, and a comparative plate of the spadix of all Piptospatha species with green pistils is given.

2016 39(1) 13-19 Peter C. Boyce, Sin Yeng Wong Studies on Homalomeneae (Araceae) of Sumatera III – A new species of Furtadoa – Furtadoa indrae (Buy)
ABSTRACT: Furtadoa indrae P.C.Boyce & S.Y.Wong, is described as a taxonomically novel species from Riau Province, Sumatera, and compared with the most similar species, West Sumateran F. sumatrensis M.Hotta. An identification key to the described species of Furtadoa is provided. Furtadoa indrae is figured in colour from living plants, and a comparative figure of the spadix of all three described Furtadoa species is presented.

2016 39(2) 15-25 Sin Yeng Wong, Peter C. Boyce Studies on Schismatoglottideae (Araceae) of Borneo LIII – Schismatoglottis larynx and S. rejangica, new species allied to S. petradoxa (Buy)
ABSTRACT: Schismatoglottis larynx S. Y. Wong & P. C. Boyce and S. rejangica S. Y. Wong & P. C. Boyce are described, illustrated, and compared with S. petradoxa S. Y. Wong & P. C. Boyce, the species to which they are most closely similar. A key to all three species is provided.

2016 39(2) 26-55 Sin Yeng Wong, Peter C. Boyce Studies on Schismatoglottideae (Araceae) of Borneo LIV - A summary of the species of the Schismatoglottis Multiflora Group (Buy)
ABSTRACT: A taxonomic synopsis, and identification key to species, of the Schismatoglottis Multiflora Group is provided. Schismatoglottis bulbifera H. Okada, H. Tsukaya & Y. Mori is resurrected from S. multiflora Ridl., to which it was relegated, taking the Multiflora Group to 18 species. All species are illustrated from living plants.

2016 39(2) 56-60 Sin Yeng Wong, Peter C. Boyce Studies on Schismatoglottideae (Araceae) of Borneo LVII: Bucephalandra filiformis – a new species from Maligan, Sarawak, Malaysian Borneo (Buy)
ABSTRACT: Bucephalandra filiformis is described as a new species with uniquely stiff linear leaf blades, illustrated from living plants from the Maligan Range (Sarawak & Sabah, Malaysian Borneo), and inserted into the most recent identification key to Bucephalandra species.

2016 39(2) 61-70 Sin Yeng Wong, Peter C. Boyce Studies on Schismatoglottideae (Araceae) of Borneo LVIII – Further novelties described for the genus Piptospatha, and a note on Piptospatha Sect. Gamogyne (Buy)
ABSTRACT: Piptospatha bella S. Y. Wong & P. C. Boyce and Piptospatha lurida S. Y. Wong & P. C. Boyce are described and illustrated from Sarawak, Malaysian Borneo. Their recognition takes Piptospatha to 18 described species. Piptospatha lurida is most similar to P. burbidgei, a species formerly allotted its own genus, Gamogyne, later made into a section of Piptospatha. Notes on Gamogyne are provided and a correction to published information on the placentation of Gamogyne offered.

2016 39(2) 71-100 Sin Yeng Wong, Hoe Yin Chen, Peter C. Boyce Studies on Schismatoglottideae (Araceae) of Borneo LIX – A preliminary conspectus of Schismatoglottis Calyptrata Complex Clade species for Sarawak (Buy)
ABSTRACT: A preliminary conspectus of species of the Schismatoglottis Calyptrata Complex Clade for Sarawak is presented. Six species are accepted, of which Schismatoglottis baangongensis S.Y. Wong, Y.C. Hoe & P.C. Boyce is newly described, and S. muluensis M. Hotta is resurrected from within S. calyptrata (Roxb.) Zoll. & Moritzi. Current evidence does not support the presence of Schismatoglottis calyptrata sens. strict. in Sarawak, while occurrence on Borneo as a whole is questionable. A modified description of S. calyptrata, excluding characteristics of Bornean taxa hitherto included in synonymy is provided. An identification key to the accepted species for Sarawak is provided, and most are illustrated from living plants.

2016 39(2) 101-120 Peter C. Boyce, A. Haigh Rhaphidophora bogneri (Araceae: Monsteroideae: Monstereae) a new species from West Africa, and notes on the Rhaphidophora africana Complex (Buy)
ABSTRACT: Rhaphidophora bogneri P. C. Boyce & Haigh is described as a new species from Gabon, equatorial West Africa, defined by inflorescences pendent during anthesis and fruiting. Rhaphidophora is additionally reviewed for Africa and three described species are accepted, of which R. africana N. E. Br. is considered undoubtedly polyphyletic, likely encompassing upwards of four species of which at least three are considered to be taxonomic novelties. Unfortunately, available preserved collections coupled with political circumstances prevailing throughout much of the species’ geographical range currently make a proper taxonomic treatment impossible. Rhaphidophora ovoidea A. Chev., described from fragmentary material from basalts, is treated as inadequately known. Rhaphidophora bogneri is illustrated from cultivated living plants, all described species are also illustrated from their nomenclatural types. The three accepted African Rhaphidophora species are delineated with a key.

2016 39(2) 121-125 Peter C. Boyce, Sin Yeng Wong Studies on Homalomeneae (Araceae) of Sumatera V – Homalomena squamis-draconis, a new species for the Chamaecladon Clade (Buy)
ABSTRACT: Homalomena squamis-draconis, a highly ornamental new dwarf species of Chamaecladon clade, is described and illustrated from Sumatera.

2017 40(1) 4-28 Sin Yeng Wong, Aisahtul binti Wardi, Peter C. Boyce Studies on Schismatoglottideae (Araceae) of Borneo LX: Preliminary notes on the Schismatoglottis Patentinervia Clade, including descriptions of three new species (Buy)
ABSTRACT: A review of the Schismatoglottis Patentinervia Clade is presented. Six species are accepted, of which three are pre-existing – Schismatoglottis patentinervia Engl. (Kalimantan Barat: Melawi), S. pectinervia A. Hay (NE Sarawak: Mulu; Brunei) and S. retinervia Furtado (Sabah: Kinabalu) – and three are taxonomic novelties: S. belonis S. Y. Wong, Aisahtul & P. C. Boyce (C Sarawak: N & C Kapit), S. gaesa S. Y. Wong, Aisahtul & P. C. Boyce (Kalimantan Utara: Malinau), and S. smaragdina S. Y. Wong, Aisahtul & P. C. Boyce (C Sarawak: N Kapit). Morphological delimitation of the Patentinervia Clade is provided, all species are described and illustrated from living plants and pre-existing species also figured from their nomenclatural Types. An identification key is offered.

2017 40(1) 29-38 Sin Yeng Wong, Peter C. Boyce Studies on Schismatoglottideae (Araceae) of Peninsular Malaysia I: On the identity of Schismatoglottis wallichii var. oblongata and a new name: Schismatoglottis lowae (Buy)
ABSTRACT: Schismatoglottis lowae S. Y. Wong & P. C. Boyce sp. nov. is described and illustrated based on the type of Schismatoglottis wallichii var. oblongata Hook.f., until now treated as a heterotypic synonym of S. wallichii Hook.f. A key to the three accepted species of hapaxanthic-stemmed (Calyptrata Clade) Schismatoglottis in Peninsular Malaysia is provided.