Dracontium amazonense (fwd)

From: Steve Marak samarak at gizmoworks.com> on 2006.04.06 at 02:44:40(14064) Aroiders, The forwarded message below is from Julius in response to Scott Taylor's Dracontium amazonense question several days ago. The formatting was rather garbled as it arrived at the list, Julius provided reformatting and asked that I just forward this on to the list. Most of the delay is my fault ... Steve +More -- Steve Marak -- samarak@gizmoworks.com ---------- Forwarded message ---------- Date: Sat, 01 Apr 2006 12:26:28 +0000 To: samarak@gizmoworks.com Subject: RE: [Aroid-l] Dracontium amazonense ><> Reply-To : Discussion of aroids aroid-l@gizmoworks.com> Sent : Wednesday, March 29, 2006 8:23 PM To : Discussion of aroids Subject : [Aroid-l] Dracontium amazonense Dear Scott, I guess I`ll 'take' this one! (See querry from Scott, below) The name, D. amazonense says it all---some species of Dracontium rarely go dormant because the area where they grow in nature never/VERY seldom goes dry for any period of time, the Amazon area being one of these regions. Other species such as D. spruceanum are the same, while other Dracontium species like D. asperum and others that occur naturally in areas that have a distinct dry and wet season do go dormant when you gradually dry out their growing medium. I would guess that with a mature tuber of D. amazonse one could 'force' dormancy by drying it out gradually, like your larger tuber, but the smaller ones 'want' to grow throught the year as they would be able to do in nature, and so attain reproductive size ASAP. Hope these insights help! Good Growing, Julius WPB, Florida > (Querry from D. Scott Taylor) Hello All, I have growing the above species for a few years and can't quite figure out patterns of dormancy. My larger tuber (flowering age) goes dormant in the fall, but many of the smaller ones do not. Growth declines in the fall, the petioles collapse, but remain green and cannot be pulled from the tuber, and then new growth resumes in warmer weather: so there is no real dormancy. I am in central Florida. Any ideas/insights? Scott dst<< -- Steve Marak -- samarak@gizmoworks.com _______________________________________________ Aroid-l mailing list Aroid-l@gizmoworks.com http://www.gizmoworks.com/mailman/listinfo/aroid-l

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