Re: [Aroid-l] Supervolute vernation. Finally a photo!

From: "Marek Argent" <abri1973 at wp.pl> on 2010.01.22 at 00:25:34(20507) (File Type Not Recognized: attachments/100123175102-2.pdf) Dear Steve, So, I suppose that the term "supervolute" refers to the vernation of a solitary leaf and "convolute" is the same but in reference to a sequence of leaves or a spadix within a spathe. I modified a little the drawing sent by you by placing the next leaf and we have the same. In my library I found a document on Monstera obliqua and there is a photo of convolute vernation of leaves (page 5). Marek HTML +More ----- Original Message ----- From: ExoticRainforest To: Discussion of aroids ; Marek Argent Sent: Wednesday, January 20, 2010 5:17 PM Subject: [Aroid-l] Supervolute vernation. Finally a photo! I screwed up big time and inserted the wrong drawing. These are the correct drawings from Stern's showing the placement of the midrib. It appears the only difference in supervolute and convolute is a leaf forming around another leaf but frankly I still don't have a completely satisfactory explanation. I try almost daily on my website to make subjects like this clearer for anyone interested in aroids that does not have or is not interested in earning a degree in botany. I am now to the point of completely removing the subject since I am no longer sure I fully understand it or can help anyone else to understand. I don't believe any definition in print in any of the 5 botanical dictionaries I now own make the distinction (if any) between convolute and supervolute clear. At least in the dictionaries they appear to be synonymous and are one and the same. Steve www.ExoticRainforest.com Marek Argent wrote: Steve, We cannot talk about vernation types not seeing the midrib as it is presented on the second drawing. It can as well be a half of a leaf rolled involutely. The third drawing (convolute) is what I thought about (but I was afraid to say) - that the term "convolute" may refer only to at least two objects like one leaf inside another one or a spadix wrapped by a spathe. Anyway in my cord photos, the third type, although probably not occuring in Araceae is possible, so it must have a name too. It's becoming complicated... Marek - These drawings are from William T. Stern's Botanical Latin, 4th edition. _______________________________________________ Aroid-L mailing list Aroid-L@www.gizmoworks.com http://www.gizmoworks.com/mailman/listinfo/aroid-l Nie znaleziono virusa w tej wiadomosci przychodzacej. Sprawdzone przez AVG - www.avg.com Wersja: 8.5.432 / Baza danych wirusów: 270.14.151/2633 - Data wydania: 01/19/10 17:49:00 ------=_NextPart_001_0129_01CA9B01.CB3FA960--------=_NextPart_000_0128_01CA9B01.CB3F8250

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