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Thread: Drosera ID ?

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    Cthulhu138's Avatar
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    Drosera ID ?

    I recently got these plants as Drosera tomentosa var. glabrata. While I realize that they are still small, something doesn't look right to me. The lamina seem to be the wrong length and shape for D.tomentosa. Color also seems quite a bit off to me. The largest one is just starting to put up a flower scape and you can see hairs at it's base. The flowers will undoubtedly provide more of a clue once mature but unfortunately, this is I all I have to work with at this time.



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    Hello, I must be going... Not a Number's Avatar
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    Key it out from Fernando Rivadavia, Paulo Minatel Gonella, Paulo Takeo Sano & Andreas Fleischmann's paper: Elucidating the controversial Drosera montana complex (Droseraceae): a taxonomic revision.

    I won't reproduce the entire key but assuming that other species have been eliminated:

    9. Leaf obovate-cuneate to cuneate with geniculate vernation; apical tentacles conspicuously distinct, in number of 7–12, 4–9 mm long, with head with unifacial gland tip ....... D. tentaculata
    - Leaf obovate, oblanceolate, or oblong-spatulate with circinate vernation; apical tentacles inconspicuously distinct, only up to 5 mm long ........ 10
    10. Adaxial petiole surface densely eglandular-pilose; sepals ovate to sub-orbicular with rounded (subobtuse) apex, in bud forming a pyramidal projection at the fusion point between adjacent sepals ....... D. spirocalyx
    - Adaxial petiole surface glabrous or sparsely eglandular-pilose; sepals oblong-ovate to narrowly-ovate with acute apex, not forming pyramidal projections as described above ....... 11
    11. Leaves oblong to oblong-spatulate; petiole 0.2–0.5(–1) mm wide; glandular trichomes of similar length present throughout scape; generally flowering from December to March (rainy season) [also in Bolivia] ....... D. montana
    - Leaves obovate to oblong-obovate; petiole 0.4–3.0 mm wide; glandular trichomes absent on the basal third of scape, but dense and larger towards the apex; generally flowering from June to September (dry season) ....... .D. tomentosa (12)
    12. Scapes densely eglandular-pilose (villous) on the basal half, decreasing in density towards apex ....... D. tomentosa var. tomentosa
    - Scapes exclusively glandular-pilose from base to apex, without notable eglandular indumentum, occasionally also sparsely
    eglandular-pilose mostly towards the basal third ....... D. tomentosa var. glabrata
    Last edited by Not a Number; 02-11-2015 at 12:07 PM.
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    Cthulhu138's Avatar
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    Looking more like Drosera tentaculata every day.


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