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Your search for articles published in volume 22 has found 12 articles.

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

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 3-6 Eduardo G. Gonçalves A new pedate-leaved species of Xanthosoma Schott (Araceae: Tribe Caladieae) with linear leaflets (Buy)
ABSTRACT: A new hairy species of Xanthosoma (X. pottii) with pedate leaves and linear leaflets from Southwestern Brazil (Pantanal region) is described and compared to its closest relative, X. plowmanii Bogner. It is the only helophytic species of the genus so far recorded with compound leaves and linear leaflets, although such features seem to be somewhat common in other species of Araceae inhabiting open marshy habitats in Brazil.

1999 22 7-9 Helmut Genaust Calla--An enigmatic aroid taxon and its etymological
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ABSTRACT: Until the present time, the genus Calla, described and introduced by Linnaeus in 1753, is believed, for the majority of both botanists and linguists, to be derived from a Latin plant name calla, presumably attested in the Natural History of Pliny the Elder and meaning the arum lily, water arum, or wild calla (Calla palustris). This word should take its origin and signification from ancient Greek kallaia 'cock's wattles' or more likely, from Greek kallos 'beauty', as if this Mediterranean member of the arum family would exhibit an outstanding degree of beauty, be the embodiment of splendor and magnificence that we, the friends and freaks of the Araceae, admire in so many kinds of this plant family. That this cannot be reasonably accepted, may be clearly demonstrated as well from the botanic as from the linguistic point of view.

1999 22 10-19 Cristiana Giordano Observations on Amorphophallus titanum (Becc.) Becc. ex Archangeli in the forest of Sumatra (Buy)
ABSTRACT: On the occasion of the centenary of the death of Odoardo Beccari the Botanical Garden of Florence organised two expeditions in Sumatra (in September 1994 and 1995) to study Amorphopballus titanum in nature and bring it to Florence to try to grow it. In the course of the two expeditions eight inflorescences and four infructescences were found. The inflorescences were at various stages of development and it was possible to sketch a general outline of the flowering process. We will give a detailed description only of the specimen which we observed minute by minute as its blossomed. For the others we will just list the most significant characteristics.

1999 22 20-29 Josef Bogner, Eduardo G. Gonçalves The genus Gearum N. E. Br. (Araceae: Tribe Spathicarpeae) (Buy)
ABSTRACT: Gearum brasiliense N. E. Br. was first collected in October 1828 by W. J. Burchell. N. E.Brown(1882) gave a very accurate description of the inflorescence and flower structure, although Burchell's specimen was heavily damaged by insect feeding, but until recently this monotypic genus remained incompletely known, due to lack of leaf material definitely attributable to Gearum. Although a second collection of Gearum was made by Burchell (Burchell 8598-leaves only), around the time ofthe holotype gathering, it was not until 150 years later that a third collection was made by Alfeu de Araujo Dias (Vias 41), a Brazilian botanist working for the Projeto RADAMBRASIL.

1999 22 30-33 Eduardo G. Gonçalves A revised key for the genus Asterostigma C. A. Fisch. & Mey. (Araceae: Tribe Spathicarpeae) and a new species from southeastern Brazil (Buy)
ABSTRACT: An updated key for the genus Asterostigma is presented together with some considerations about the geographic distribution of the genus. A new Brazilian species of Asterostigma CA. lombardii) is also described and illustrated. It occurs in the Brazilian states of Minas Gerais and probably Espfrito Santo and has a seasonally induced dormancy period. Asterostigma lombardii differs from its closest relative [A. riedelianum (Schott) o. Kuntze, from Bahia] mainly because of its boatshaped synandrodes formed by completely connate staminodes and acutely pointed stigma lobes.

1999 22 34-47 Dorothy E. Shaw Aroid postage stamps of the world. Supplement 1 (Buy)
ABSTRACT: Postage stamps featuring aroids, or involving aroid culture or use, omitted from a previous publication (Shaw, 1993) and those issued since, are listed with the countries of origin, the dates, the reasons for the stamp issue and with illustrations of some of the stamps.

1999 22 48-61 Nuttha Kuanprasert, Adelheid R. Kuehnle Fragrance quality (Buy)
ABSTRACT: A total of 146 Anthurium species and hybrids from sections Belolonchium, Calomystrium, Cardiolonchium, Chamaerepium, Dactylophyllum, Leptanthurium, Oxycarpium, Pachyneurium, Porphyrochitonium, Semaeophyllium, Tetraspermium and Urospadix was evaluated for floral fragrance. Type of fragrance, time of emission, daily occurrence and developmental stage of scent emission were recorded along with the color of spathe and spadix and the environmental conditions. A majority of plants emitted scent: 68% of the species and 80% of the hybrids were fragrant. Fragrance was categorized as citrus, fishy, floral, foul, fruity, menthol, minty, pine, spicy, and sweet. There was no correlation between scent production or quality with flower color or botanical section. A plurality of plants emitted scent during the morning only (45%) and at the pistillate stage (77%). Detection of fragrance depended upon ambient temperature and relative humidity. Fragrance life of unharvested inflorescences varied from 3 days up to 4 weeks, whereas that of harvested inflorescences was short, only 1 or 2 days. First generation progeny analyses from 22 crosses between non-fragrant and fragrant parents indicated that multiple genes likely govern the presence of scent in Anthurium.

1999 22 63-71 Danny N. Beath Dynastine scarab beetle pollination in Dieffenbachia longispatha (Araceae) on Barro Colorado Island (Panama) compared with La Selva Biological Station (Costa Rica) (Buy)
ABSTRACT: The aim of this study was to evaluate the differences between two flowering populations of Dieffenbachia longispatha; one on Barro Colorado Island, Panama and the other at La Selva Biological Station, Costa Rica. The Barro Colorado population exhibited green spathes and 10-15 loosely packed bright orange female florets in the lower spadix zone, compared to the La Selva populations, which had slightly larger yellow-green spathes and 40-50 densely packed yellow female florets in the lower spadix zone. Other differences included floral odor, which was sweet and spicy in the Barro Colorado population and rancid smelling on La Selva plants, together with numbers, species and timings of beetle visitors. On Barro Colorado the dominant beetle visitors were Cyclocephala gravis and Cyclocephala sexpunctata compared to Cyclocephala amblyopsis and Cyclocephala gravis at La Selva. In conclusion, the effects of selection by the local beetle populations in each locality appears to have led to the evolution of different sub-species of D. longispatha on Barro Colorado Island in Panama and at La Selva Biological Station, Costa Rica.

1999 22 72-78 Makoto Tahara, Viet Xuan Nguyen, Hiromichi Yoshino Isozymes analyses of Asian diploid and triploid taro (Buy)
ABSTRACT: In order to investigate phylogenetic relationships between diploid and triploid taros, Colocasia esculenta (L.) Schott, 13 enzyme systems were analyzed for isozyme variations using 59 accessions collected in Nepal and Yunnan Province of China. A total of 115 banding positions were discovered, which successfully differentiated most of the accessions. Isozyme bands specific to triploids were observed only at five out of 115 positions, indicating autopolyploid origin of the triploids: almost all isozyme variations in triploids are derived from those in diploids. The Wagner parsimony method, applied to the band presence or absence data of 59 accessions, determined 65 most parsimonious trees. These trees contain consistent relationships among most of the Nepal and some of the Yunnan accessions; entire accessions are clearly divided into two geographical groups, and diploids and triploids tend to form separate groups in each geographical group. Triploid taros are believed to arise from diploids by fertilization of an unreduced gamete with a normal gamete. Unreduced gamete formation can occur repeatedly in any environment, but the triploid taros are generally found in marginal environments. Based on this evidence, it is concluded that geographical differentiation proceeded between Nepal and Yunnan, and triploids were formed and established as adapted plants in each area.

1999 22 79-89 Makoto Tahara, Seiko Suefuji, Toshinori Ochiai, Hiromichi Yoshino Phylogenetic relationships of taro (Buy)
ABSTRACT: Nucleotide sequences in two non-coding regions of chloroplast DNA, tRNA inter- geneic spacer CtrnL-trnF) and ribosomal protein gene (rp116 and rpll4) linker, were determined for 13 accessions of taro, Colocasia esculenta (L.) Schott, C. gigantea Hook. f, Alocasia macrorrhiza (L.) G. Don, A. odora (Roxb.) K. Koch, Xanthosoma sagittifolium Schott and Schismatoglottis spp. using polymerase chain reaction (peR) and a direct sequence method of the amplified DNA. Sequence variations of nucleotide substitution, insertion or deletion and slippage were observed at 55 positions in the trnL-trnF inter-genic spacer of 395 bp length; most of the changes were found among genera but not within species. There was no sequence differentiation in the rpllinker among the accessions in this study. Phylogenetic trees determined by the neighbor-joining and maximum parsimony methods using the sequence variations in the trnL-trnF intergenic spacer showed distinct evolutionary lineage of Schismatogloftis, Xanthosoma and Colocasial Alocasia; however, the relationships within Colocasia/ Alocasia taxa were not clearly defined.

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.