Not many leaves on the plant. A couple of leaves can be seen on the image with the ruler attempting to show the height of the plant. Around the 6 to 8 cm mark. Can find again and get more photos some time.
yes, I agree about plant height: its not a characteristics I would normally rely on solely to separate species. But in the field, its very noticeable how tall these Drosera are (and on quite slender stems but still erect). the other differences (colour; shape of bud; long v short indumentum on calyx) are also gradational and a bit subjective.
Ahh I see. I feel a bit weird using plant height as the sole determining characteristic - to much interplay with environmental stochasticity. I notice that De Salas mentions the shape of the flower buds - roughly spherical vs what i'd describe as ovular