tuberous-drosera.net --- Drosera magna

tuberous-drosera.net --- home for tuberous drosera

Drosera magna

D. magna (or D. erythrorhiza ssp. magna) is one of four species in the erythrorhiza complex consisting of D. collina, D. erythrorhiza, D. magna and D. squamosa. It is a rosetted species usually forming 4-6 active leaves per rosette. The plants mostly reach 10 to 12 cm in diameter. D. magna rarely flowers and needs a bush fire to induce flowering. However, this species reproduces well by formation of lateral adventitious stolons.
The tubers are orange.

I am still not sure whether I can tell apart all the different plants within the D. erythrorhiza complex. Two species form few leaves: D. erythrorhiza usually 3-5 per rosette, D. magna 4-6, and both can be distinguished by their size, as D. erythriza usually reaches no more than 6 to 8 cm in diameter, whereas D. magna forms rosettes of about 10 to 12 cm.
The other two species produce larger numbers of active leaves: D. squamosa 7 to 8 per rosette, D. collina even 10 to 12. D. squamosa leaves usually have a typical red margin, but this feature may be missing in some plants of a given colony. Those can be very difficult to distinguish from D. collina.



Plants of D. magna. The pot used in this case measures 10x10 cm.



Plants of D. magna from Jurien. These plants were smaller than the other form shown above - at least in the 2013/2014 season. This form seems to place its tubers very deep in the substrate. Currently, I am using a 20 cm deep pot and hope that this will be ok for the long term.

Please respect that all texts and photos were created by me and may not be used without my permission.