[Aroid-l] Chaos in Monstera names

From: botanist at malesiana.com (Peter Boyce) on 2008.06.29 at 06:22:17(17998) Dear Leland, Rhaphidophora tetrasperma and R. pertusa are distinct species, although they are related. In the same group are R. nicolsonii, R. glauca, R. luchunensis and perhaps R. corneri. I posted a description for R. pertusa yesterday; here is the description for R. tetrasperma: Rhaphidophora tetrasperma Hook.f., Fl. Brit. India 6 (1893) 548; Ridl., Mat. Fl.Malay Penins. 3 (1907) 44--45; Engl. & K. Krause in Engl., Pflanzenr. 37 (IV.23B) (1908) 48; Ridl., Fl. Malay Penins. 5 (1925) 124 - Type: Malaysia, Perak, Scortechini 169b (K, holo). Distribution: Peninsular Malaysia (Kelantan, Perak), southern Thailand Small to medium-sized, rather slender, semi-pachycaul, heterophyllous liane to 5 m; seedling stage a non-skototropic shingling juvenile shoot; pre-adult plants very rarely forming terrestrial colonies; adult shoot architecture comprised of elongated, weakly clinging, physiognomically monopodial, flexuous, moderately leafy, non-flowering stems and weakly adherent or, more commonly, free lateral flowering stems; stems smooth, without prophyll, cataphyll and petiolar sheath fibre, internodes to 14 x 1 cm, separated by prominent straight leaf scars; flagellate foraging stems not observed; clasping roots sparsely produced from nodes and internodes; feeding roots stout, produced singly or in pairs from most nodes of free shoots; leaves weakly spiral-distichous; cataphylls and prophylls membranous, soon drying and falling; petiole shallowly grooved, 10--34 x 0.2--0.4 cm, smooth, apical and basal genicula slightly prominent; petiolar sheath prominent, extending to base of apical geniculum, soon falling to leave a pr ominent, slightly corky scar; lamina sparsely to + entirely deeply pinnatipartite to nearly pinnatisect, occasionally with large rhombic perforations adjacent to mid-rib, 12--42 x 9.5--38 cm, broadly ovate to ovate-lanceolate, thinly coriaceous, base truncate or very weakly cordate, apex acute to acuminate, individual pinnae up to 6 cm wide; mid-rib prominently raised abaxially, slightly sunken adaxially; primary venation pinnate, raised abaxially, slightly impressed adaxially; interprimaries diverging from primaries, much less prominent, slightly raised abaxially, very slightly impressed adaxially; secondary venation weakly reticulate, very slightly raised; tertiary venation barely visible; inflorescence few together, subtended by two prominent cataphylls, these soon falling; peduncle terete, 2--2.5 x 0.3--0.4 cm; spathe canoe-shaped, 3--3.5 x 0.8--1.5 cm, stiffly fleshy, apparently falling swiftly, white with adherent black cataphyll remnants; spadix cylindrical, sessile, inserted slightly decurrently on p eduncle, 3--3.5 x 0.75 - 1 cm, white; stylar region well developed, mostly rhombohexagonal, c. 2 x 2 mm, truncate, margins deflexed; stigma elliptic, longitudinally orientated, c. 1 x 0.2 mm; anthers exserted at anthesis; infructescence not observed. Habitat: Disturbed rather dry to moist or wet forest on sandstone and granite. 190--760 m altitude. Pete +More ----- Original Message ----- From: "brian lee" To: "Discussion of aroids" Sent: Saturday, June 28, 2008 9:45 PM Subject: Re: [Aroid-l] Chaos in Monstera names > Dear Tom and the masses, > > Aloha. > > On an earlier post, I said that Monstera pertusa was a valid name...that was based on the Tropicos listing. On the KEW monocot checklist, that name is considered Raphidophora pertusa. Monstera and Rhapidophora are genera that I would like to study in greater detail,however, access to vouchered and correctly curated living collections are limited. > > Pete, are you familiar with Rhaphidophora pertusa? I mention this because there is the discussion that many of the so-called Monstera pertusa are really Rhaphidophora tetrasperma. Now, I noticed that the diatribution of Rhaphidophora tetrasperma and Rhapidophora pertusa are very distinct...the former from peninsular Thailand and peninsular Malaysia, and R. pertusa from southern India,Bangladesh,and Sri Lanka. Can you comment on this? Are they similar species...especially in the sterile state? > > Thank you all. > > Aloha, > > Leland > > > --- On Fri, 6/27/08, Tom Croat wrote: > >> From: Tom Croat >> Subject: Re: [Aroid-l] Chaos in Monstera names >> To: "Discussion of aroids" >> Date: Friday, June 27, 2008, 10:52 AM >> Marek: >> >> Monstera friedrichsthalii is a synonym of A. >> adansonii but >> M. pertusa is not even a Monstera as I recall but rather a >> Rhapidophora >> (Pete is this not correct?). M. karwinskyi is a synonym of >> M. acuminate, >> not the other way around. M. obliqua has lots of synonyms. >> Madison >> lists 7 including M. expilata Schott but I intend to >> resurrect the >> latter. >> >> >> >> Tom >> >> >> >> ________________________________ >> >> From: aroid-l-bounces at gizmoworks.com >> [mailto:aroid-l-bounces at gizmoworks.com] On Behalf Of Marek >> Argent >> Sent: Wednesday, June 25, 2008 12:13 PM >> To: Discussion of aroids >> Subject: [Aroid-l] Chaos in Monstera names >> >> >> >> Hello, >> >> >> >> Can anyone authoritatively tell if: >> >> >> >> M. friedrichsthalii = M. adansonii = M. pertusa >> >> >> >> M. acuminata = M. karwinskyi >> >> >> >> M. obliqua has no synonyms >> >> >> >> Best >> >> Marek_______________________________________________ >> Aroid-L mailing list >> Aroid-L at www.gizmoworks.com >> http://www.gizmoworks.com/mailman/listinfo/aroid-l > > > > _______________________________________________ > Aroid-L mailing list > Aroid-L at www.gizmoworks.com > http://www.gizmoworks.com/mailman/listinfo/aroid-l > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.gizmoworks.com/mailman/private/aroid-l/attachments/20080629/9d29b9b2/attachment-0001.htm

Note: this is a very old post, so no reply function is available.