[Aroid-l] Leaf unfolding

From: lbmkjm at yahoo.com (brian lee) on 2008.07.27 at 15:15:40(18262) Dear all, Aloha. Now I am confused. I would defer to Julius or Pete before accepting my statement. Off the top of my head, I convinced myself I knew of what I spoke...but reading Julius and Pete...I am mistaken. I certainly need tp upgrade my vernation information. Aloha, Leland +More --- On Sun, 7/27/08, brian lee wrote: > From: brian lee > Subject: Re: [Aroid-l] Leaf unfolding > To: "Discussion of aroids" > Date: Sunday, July 27, 2008, 4:22 AM > Dear Marek, > > Aloha. > > Convolute vernation is the unrolling of the leaves where > the blade margins are curled inward towards the midrib. So, > if your drawing shows the top of the leaf as the top of the > illustration, it is upside down. In your photos, it would > be rolled adaxially or toward the central plant axis. > Contrast this with revolute leaf margins where the blade > margins are rolled to the underside of the blade. Notice > that I did not say revolute vernation. If we were > discussing revolute leaf margins, your left image would be > a cross section of this. > > Involute simply means rolled along the longitudinal axis, > so when applied to vernation or the unrolling of the > emerging leaf, it resembles a shell spiral in cross > section....as in your drawing. > > I will not go into this, but, another type of > vernation....which is seen in cycads of the genus, Cycas, > is circinnate. I love watching new leaves unfurl. > > Aloha, > > Leland > > > --- On Sat, 7/26/08, Marek Argent > wrote: > > > From: Marek Argent > > Subject: [Aroid-l] Leaf unfolding > > To: "Discussion of aroids" > > > Date: Saturday, July 26, 2008, 1:01 PM > > Hello, > > > > Which of them is convolute and which involute? Is it > > correct what I drawn? > > > > 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

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