User Tag List

Informational! Informational!:  0
Likes Likes:  0
Page 2 of 2 FirstFirst 12
Results 9 to 14 of 14

Thread: Drosera ascendens - villosa - graomogolensis

  1. #9

    Join Date
    Nov 2003
    Location
    San Francisco, CA
    Posts
    237
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Hey Guys,

    It's true you can't formally use D.villosa var/subsp. ascendes, but the name D.ascendens is legitimate. This is how Saint Hilaire originally published them, as 2 separate species (D.villosa and D.ascendens). They are simialr in floral parts, but the leaves are different in that D.villosa has petioles longer than the lamina while D.ascendens has petioles usually much shorter than the lamina, but in shadier habitats they may be almost equally as long. D.villosa usually has narrower, more upright leaves too. D.ascendens is extremely variable in the wild. The larger plant on the right in taht 1st picture seems like the form from the Serra dor Orgaos (or Orgelgeberge, or something like that in German), which is the one most common in cultivation (and not the one from Caparao, William).

    As for D.graomogolensis, the rosettes are almost identical to some forms of D.ascendens. Here the differences are in the floral parts and seeds. The seeds of D.graomogolensis are rounder, the flowers fewer, pedicels longer, sepals smaller, petals parger, stamens larger, styles longer, and scapes longer too I think.

    And there's a 4rth taxon to this complex, but I think it was lost in cultivation...

  2. #10

    Join Date
    Dec 2001
    Location
    Oswego, New York, U.S.A.
    Posts
    5,290
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thanks Fernando. The plant was very small when I sent it you that photo, and I have updated my list. It's great to have you here to comment, as my experience is very limited with the Brasillian taxa.

    Would you also confirm that the smaller plant is D. graomogolensis?
    "Grow More, Share More"

  3. #11

    Join Date
    Dec 2002
    Location
    Germany
    Posts
    361
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Hi,

    Thanks all for your answers! You've been a great help to me. So i think, the plant i'm growing is a Drosera ascendens or graomogolensis. I can't wait to see see a flower of my plant.

    Christian

    P.S.: I think, it's Orgelgebirge, Fernando [img]http://www.**********.com/iB_html312/non-cgi/emoticons/smile.gif[/img]

  4. #12

    Join Date
    Nov 2003
    Location
    San Francisco, CA
    Posts
    237
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Sorry William, but it's very hard to tell even between mature rosettes of ascendens and graomogolensis, you'll have to wait for flowers. It is so confusing that Robert Gibson and I THOUGHT we'd found a new population of graomogolensis on our trip together, but I'm almost sure they're ascendens, only slightly large and hairy.

  5. #13

    Join Date
    Dec 2001
    Location
    Oswego, New York, U.S.A.
    Posts
    5,290
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Fernando,

    Well, we won't have long to wait: one of my "tentative" D. graomogolensis plants is initiating a flower scape right now, I just noticed it today! But I will bet my cat against a packet of rare Brasillian seed (your choice!) that it is truly D. graomogolensis! The stipules are in conformity with this species, and are really distinct from the D. ascendens that I cultivate: much more imbricate, and the longer stalked glands on the adaxial lamina surface are apparent. Aww, heck, you won't take the bet now. Should have kept quiet on that stuff.

    So, can I rely on the characteristics of the respective stipular indumentum, or is this a plastic quality? D. ascendens is nearly covered with nearly sessile glands vs D. graomogolensis which has longer stalked glands of lesser occurence? Or am I being optimistic with this?



    "Grow More, Share More"

  6. #14

    Join Date
    Dec 2002
    Location
    Germany
    Posts
    361
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Hi,

    I took some pictures of this plant today. that i would like to share with you. I didn't want to open a new thread.


    [/
    http://www.utricularia.net/drosera/a...201004_002.jpg


    http://www.utricularia.net/drosera/a...201004_016.jpg


    http://www.utricularia.net/drosera/a...012004_026.jpg


    http://www.utricularia.net/drosera/a...201004_011.jpg

    the links under the pictures will lead to the same picture in a higher resolution. I don't know, why i can't link the pictures directly anymore.

    Christian

Page 2 of 2 FirstFirst 12

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •