Re: [Aroid-l] Alocaisa gageana

From: "Christopher Rogers" <crogers at ecoanalysts.com> on 2009.08.11 at 17:58:27(19696) Fascinating! Thanks, Peter! So, obviously I had a few things confused. I am glad to know you are working on the group, and I hope that I can get a reprint when you publish. You said that these plants send up a pair of inflorescences. My A. odora and my A. macrorrhizos have sent up single inflorescences, paired and sometimes three inflorescences. Am I seeing something different, or could this be ecophenotypic variation? I really enjoy the genus Alocasia, and I do want to learn all I can about the taxonomy. I appreciate your help, and if you ever need any help with freshwater crustacean taxonomy, let me know. I be happy to return the favor! Thanks for the help! Christopher HTML +More D. Christopher Rogers Senior Invertebrate Ecologist/ Taxonomist ((,///////////=======< EcoAnalysts, Inc. 1.530.383.4798 P.O. Box 4098 Davis, CA 95616 USA ŸInvertebrate Taxonomy ŸEndangered Species ŸEcological Studies ŸBioassessment ŸInvasive Species ŸPlankton ŸPhycology IDAHO ∙ CALIFORNIA ∙ MISSOURI ∙ PENNSYLVANIA ∙ ONTARIO WWW.ECOANALYSTS.COM ∙ ECO@ECOANALYSTS.COM -----Original Message----- From: aroid-l-bounces@gizmoworks.com [mailto:aroid-l-bounces@gizmoworks.com] On Behalf Of Peter Boyce Sent: Sunday, August 09, 2009 11:53 PM To: 'Discussion of aroids' Subject: Re: [Aroid-l] Alocaisa gageana Hi Christopher, These trans-Himalayan large-leaved Alocasia are taxonomic beasts! I’ve recently tackled the northern Thai species and this is the current status for those that I investigated. What you describe as gageana is almost certainly odora; also it is very likely that gageana is a syn. of odora BUT the type (of gageana) is missing (presumed desctroyed) from Berlin and Engler’s description is too incomplete to pin the name. What you have as odora (yellow spathe) is definitely A. navicularis. Alocasia macrorrhizos is almost certainly OK, but spathe colour is very variable, from white, pinkish, purplish, and ‘yellow’ (actually somewhat cream). All of these species produce pairs of inflorescences arising in the leaf axil (actually terminal on a branching module and then displaced by a new leaf and thus appearing axillary. Other names for the transhimalaya in this ‘macrorrhizos/odora’ complex are: Alocasia cadieri Chantrier, Rev. Hort. 26: 326 (1939) Alocasia cochinchensis, Pierre ex Engl. & K.Krause Pflanzenr., IV, 23E: 103 (1920) Alocasia decipiens Schott, Bonplandia (Hannover) 7: 28 (1859) Alocasia decumbens Buchet, Bull. Mus. Natl. Hist. Nat., II, 11: 417 (1939) Alocasia evrardii Gagnep., Fl. Indo-Chine 6: 1150 (1942) Alocasia fallax Schott, Bonplandia (Hannover) 7: 28 (1859) Alocasia fornicata (Roxb.) Schott, Oesterr. Bot. Wochenbl. 4: 410 (1854) Alocasia grandis Clemenc., Rev. Hort. 1868: 380 (1868) Alocasia grata Prain ex Engl. & Krause, Pflanzenr., IV, 23E: 93 (1920) Alocasia hainanensis K.Krause, Pflanzenr., IV, 23E: 91 (1920) Alocasia hainanica N.E.Br., J. Linn. Soc., Bot. 36: 183 (1903) Alocasia lecomtei Engl., Pflanzenr., IV, 23E: 90 (1920) Alocasia liervalii Hérincq, Hort. Franc.: 243 (1869) Alocasia longifolia Engl. & K.Krause, Pflanzenr., IV, 23E: 103 (1920) Alocasia montana (Roxb.) Schott, Oesterr. Bot. Wochenbl. 4: 410 (1854) - almost certainly the correct name for A. hynosa Alocasia putii Gagnep., Fl. Indo-Chine 6: 1150 (1942) Alocasia tonkinensis Engl., Pflanzenr., IV, 23E: 91 (1920) A LOT to do! Alocasia robusta produces clusters of up to 20 inflorescences in the ‘middle’ of the plant, with the entire cluster then ‘pierced’ by the newly emerging leaf, and is not part of the above complex, being closest to A. puber, A. sarawakensis, etc. Cheers Peter From: aroid-l-bounces@gizmoworks.com [mailto:aroid-l-bounces@gizmoworks.com] On Behalf Of Christopher Rogers Sent: 10 August 2009 03:40 To: Discussion of aroids Subject: Re: [Aroid-l] Alocaisa gageana Howdy, Pete! I thought I had a handle on the large green, entire leaf margin Alocasia. My understanding was that A. gageana had a green erect spathe, leaf sinus reaching petiole; A. odora has a yellow erect spathe, and; A. macrorhiza had a reflexed yellow spathe, with the leaf sinus not reaching the petiole. I am not sure how A. robusta is separated out. So, I am surprised to hear that A. gageana is a nomen dubium. Can you help me out on separating these beasts? Cheers, Christopher D. Christopher Rogers Invertebrate Ecologist Telephone: 530.383.4798 EcoAnalysts, Inc. PO Box 4098 Davis, CA 95616 USA ________________________________________ From: aroid-l-bounces@gizmoworks.com on behalf of Peter Boyce Sent: Sat 08-Aug-09 6:58 PM To: 'Discussion of aroids' Subject: Re: [Aroid-l] Alocaisa gageana Hi Barbara This will be almost certainly Alocasia macrorrhizos in one of its numerous colour forms. Alocasia gageana was described from northern Burma and is an nom. dub. Peter From: aroid-l-bounces@gizmoworks.com [mailto:aroid-l-bounces@gizmoworks.com] On Behalf Of Barbara Sent: 07 August 2009 05:28 To: aroid-l@gizmoworks.com Subject: [Aroid-l] Alocaisa gageana I purchased a plant labeled as Alocasia gageana aurea variegata but think I read somewhere that aurea is not the proper name. I did a search on the Aroidean but did not find the correct name. I am a novice but would like to make sure the names are correct. I would appreciate any help. Barbara _______________________________________________ Aroid-L mailing list Aroid-L@www.gizmoworks.com http://www.gizmoworks.com/mailman/listinfo/aroid-l No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.392 / Virus Database: 270.13.49/2295 - Release Date: 08/10/09 18:19:00 ------=_NextPart_000_008E_01CA1A72.A838D050 _______________________________________________ Aroid-L mailing list Aroid-L@www.gizmoworks.com http://www.gizmoworks.com/mailman/listinfo/aroid-l --==============„91205011690680460==--

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