Re: Leaf unfolding
- Subject: Re: Leaf unfolding
- From: brian lee <firstname.lastname@example.org>
- Date: Sun, 27 Jul 2008 08:15:40 -0700 (PDT)
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.
--- On Sun, 7/27/08, brian lee <email@example.com> wrote:
> From: brian lee <firstname.lastname@example.org>
> Subject: Re: [Aroid-l] Leaf unfolding
> To: "Discussion of aroids" <email@example.com>
> Date: Sunday, July 27, 2008, 4:22 AM
> Dear Marek,
> 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.
> --- On Sat, 7/26/08, Marek Argent <firstname.lastname@example.org>
> > From: Marek Argent <email@example.com>
> > 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@www.gizmoworks.com
> > http://www.gizmoworks.com/mailman/listinfo/aroid-l
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