| Dear Steve,
Aloha.
I have taken another closer look at Marcus Nadruz's photos of Philodendron lanceolatum, and this also looks different to me from Philodendron crassinervium. I am only relying on those small photos, so these may be artifacts of the photograph quality, but this is what I notice. First of all, the inflorescence is not hooded or cucullate, as the original description mentions. The color of the inflorescence differs, although, how taxonomically significant this is, varies. Second, it appears that the primary lateral veins of the Philodendron lanceolatum are prominent. Thirdly, and this is the difficult thing to confirm from a small image, is the petioles appear to be adaxially sulcate, with a sharp edge...this would make the petiole "C" shaped. I could be wrong, but, this is what I am seeing. If I am correct, perhaps Philodendron lanceolatum may be resurrected from synonymy from Philodendron crassinervium. Remember, I do not have any specimens to directly observe, so some of these details may be optical illusions.
Aloha,
Leland --- On Tue, 8/18/09, Tom Croat <Thomas.Croat@mobot.org> wrote:
From: Tom Croat <Thomas.Croat@mobot.org>
Subject: Re: [Aroid-l] Philodendron crassinervium inflorescence
To: "Discussion of aroids" <aroid-l@gizmoworks.com>
Date: Tuesday, August 18, 2009, 6:23 PM
=0A=0A=0A =0A =0A=0A =0A=0A =0A=0A =0A=0A =0A=0A=0A=0A=0A=0A =0A=0A =0A=0A Dear Steve: =0A=0A =0A=0A Schotts drawing is of P. crassinervium. =0AYes thing have gone extinct after having been described. =0A=0A =0A=0A Tom =0A=0A =0A=0A =0A=0A =0A=0A
=0A=0A =0A=0A From: aroid-l-bounces@gizmoworks.com=0A[mailto:aroid-l-bounces@gizmoworks.com] On=0ABehalf Of Harry Luther
=0ASent: Tuesday, August 18, 2009=0A7:33 PM
=0ATo: Discussion of aroids
=0ASubject: Re: [Aroid-l]=0APhilodendron crassinervium inflorescence =0A=0A =0A=0A =0A=0A =0A=0A I collected P. crassinervium in 1996=0Abetween Mangaritba and Angra dos Reis, R de J,=0A Brazil in lowland more or less=0Aundisturbed (rare!) Atlantic =0A Forest . I do not believe=0Athat it and the P. alternans that I received from Leland are=0Aconspecific. HEL =0A=0A =0A=0A =0A=0A-----Original=0AMessage-----
=0AFrom:=0Aaroid-l-bounces@gizmoworks.com [mailto:aroid-l-bounces@gizmoworks.com]On Behalf Of ExoticRainforest
=0ASent: Saturday, August 15, 2009=0A9:43 AM
=0ATo: Discussion of aroids
=0ASubject: [Aroid-l] Philodendron=0Acrassinervium inflorescence =0A=0ATom, thanks so much for the plate. I've added it to=0Athe page.
=0A
=0Ahttp://www.exoticrainforest.com/Philodendron%20crassinervium%20Philodendron%20lanceolatum.pc.html
=0A
=0AI find it interesting Schott's plate does not appear to match your field notes=0Aon P. crassinervium or Mauro=0APeixoto's photo. I have three questions. Is Scott's drawing=0Aapplicable to P. alternans or P. lanceolatum? And more=0Aimportant in my mind, could Schott have described something that no longer=0Aexists in the forests of Brazil? Or, is it possible P. alternans is truly a species since it=0Ais more often epiphytic as well as pendent while P. crassinervium is primarily terrestrial? The plants=0Ain my own collection appear to be different and Eduardo and Marcus have both=0Asaid privately they are not likely to be the same plant species. In=0Aaddition, notes and photos I've added to the page from Leland Miyano also at=0Aleast appear to indicate they may not be the same plant.
=0A
=0AInput from any of our experts would be most helpful. And by the way, I've=0Acopied this privately to all mentioned in this note so if any of you choose to=0Acomment please include Aroid l when you respond.
=0A
=0AThanks as always!
=0A
=0ASteve Lucas
=0Awww.ExoticRainforest.com
=0A
=0A
=0ATom Croat wrote: =0A=0A Dear Steve: We could scan=0ASchott=E2=80=99s painting of the inflorescences if you would like it. =0A=0ATom =0A=0A =0A=0A=0A=0Aaroid-l =0A=0A =0A=0A =0A=0A=0A
-----Inline Attachment Follows-----
|
IAS on Facebook
IAS on Instagram
