Drosera I.D.
- Thread starter Clare Mitchell
- Start date
Smilodonichthys
Carnivorous Plant Addict
Would you happen to have more photos that might better show the entire leaf stem in focus, especially where it attaches and/or any flower scape and it's base?
In intermedia the flower scapes are decumbent before curving upright and the leaf stalks tend to be oriented similarly whereas in anglica both are usually erect. The leaf stalks of intermedia are smooth and lack the hairs/glands that are often seen on anglica as well as being more rounded in cross section than anglica which tends to be kind of flattened. In anglica the leaves are basal whereas in Intermedia they grow alternately on a bit of a stem above the roots. Intermedia is often a much smaller plant than anglica but there are small forms and large of both as well as different sizes at different levels of maturity.
The long taper of the blade at the petiole and the smooth, roundish in cross section (but out of focus) look of the petiole makes me think intermedia. anglica leaf blades can have this shape though, especially if it is a hybrid with rotundifolia (D. x obovata).
Hope this helps!
In intermedia the flower scapes are decumbent before curving upright and the leaf stalks tend to be oriented similarly whereas in anglica both are usually erect. The leaf stalks of intermedia are smooth and lack the hairs/glands that are often seen on anglica as well as being more rounded in cross section than anglica which tends to be kind of flattened. In anglica the leaves are basal whereas in Intermedia they grow alternately on a bit of a stem above the roots. Intermedia is often a much smaller plant than anglica but there are small forms and large of both as well as different sizes at different levels of maturity.
The long taper of the blade at the petiole and the smooth, roundish in cross section (but out of focus) look of the petiole makes me think intermedia. anglica leaf blades can have this shape though, especially if it is a hybrid with rotundifolia (D. x obovata).
Hope this helps!
Clare Mitchell
Seed
Thanks for your reply! Here's another (better!) photo of an adjacent plant.
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Smilodonichthys
Carnivorous Plant Addict
Excellent photo! That second one looks to me like Drosera anglica. Hair/glands on the stem, stem somewhat flattened in cross section, leaves basal and elongated leaf blade are what makes me think that.
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Smilodonichthys
Carnivorous Plant Addict
Another good thing to get good photos of for I.D. purposes is the stipules at the base of the leaf stalks or lack thereof. In anglica they are connected to the stalk for their entire length and have a shredded look to their ends.
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Smilodonichthys
Carnivorous Plant Addict
The second does kind of have the look of D. linearis just coming out of hibernacula. Were there any with very long linear leaf blades? Shoreline fen is often where you would find linearis.
Clare Mitchell
Seed
Thanks for all your comments. There are definitely D. linearis at this site.
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Smilodonichthys
Carnivorous Plant Addict
That could add Drosera x woodii (Hybrid of rotundifolia and linearis) into the mix then which the first photo resembles. Even with good photos it can be difficult to definitively I.D. those three Drosera and their hybrids. Especially where they grow together. I can definitely struggle with it anyway (as I'm sure you can tell 
). The Flora of North America key often relies on seeds to differentiate them.
floranorthamerica.org
). The Flora of North America key often relies on seeds to differentiate them.Drosera - FNA