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 areprint when you publish.
You said that these plants send up a pair ofinflorescences. My A. odora and my A. macrorrhizos have sent up singleinflorescences, paired and sometimes three inflorescences. Am I seeingsomething different, or could this be ecophenotypic variation?
I really enjoy the genus Alocasia, and I do want to learnall I can about the taxonomy. I appreciate your help, and if you ever need anyhelp with freshwater crustacean taxonomy, let me know. I be happy to return thefavor!
Thanks for the help!
Christopher
D.Christopher Rogers
SeniorInvertebrate Ecologist/ Taxonomist
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USA
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-----Original Message-----
From: aroid-l-bounces@gizmoworks.com [mailto:aroid-l-bounces@gizmoworks.com] OnBehalf 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 taxonomicbeasts! I=E2=80=99ve
recently tackled the northern Thai species and this isthe 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 (ofgageana) is missing
(presumed desctroyed) from Berlin and Engler=E2=80=99sdescription is too incomplete
to pin the name.
What you have as odora (yellow spathe) is definitely A.navicularis.=C2=A0
Alocasia macrorrhizos is almost certainly OK, but spathecolour is very
variable, from white, pinkish, purplish, and =E2=80=98yellow=E2=80=99(actually somewhat
cream).
All of these species produce pairs of inflorescencesarising in the leaf
axil (actually terminal on a branching module and thendisplaced by a new
leaf and thus appearing axillary.
Other names for the transhimalaya in this=E2=80=98macrorrhizos/odora=E2=80=99 complex are:
Alocasia cadieri Chantrier, Rev. Hort. 26: 326 (1939)
Alocasia cochinchensis, Pierre ex Engl. & K.KrausePflanzenr., 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=C2=A0 (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 H=C3=A9rincq, 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 20inflorescences in the
=E2=80=98middle=E2=80=99 of the plant, with the entire cluster then=E2=80=98pierced=E2=80=99 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 leafmargin Alocasia. My
understanding was that A. gageana had a green erectspathe, leaf sinus
reaching petiole; A. odora has a yellow erect spathe,and; A. macrorhiza had
a reflexed yellow spathe, with the leaf sinus notreaching the petiole. I am
not sure how A. robusta is separated out. So, I amsurprised to hear that A.
gageana is a nomen dubium. Can you help me out onseparating 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 PeterBoyce
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 inone of its numerous
colour forms. Alocasia gageana was described fromnorthern 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 aureavariegata but think I
read somewhere that aurea is not the proper name. I did asearch on the
Aroidean but did not find the correct name. I am a novicebut would like to
make sure the names are correct. I would appreciate anyhelp.
Barbara
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