I'm trying to gather all the known chromosome numbers for Drosera
and would like some help. I'm listing all the ones I've found below and if
anybody knows of any other not on this list, please tell me. And give
me references if possible. I'll be using 2n numbers and Jan's new
infrageneric classification to help.
Subgen.Thelocalyx - D.burmanni (20)
Subgen.Stelogyne - D.hamiltonii (28)
Subgen.Regiae - D.regia (34)
Subgen.Coelophylla - D.glanduligera (22)
Subgen.Lasiocephala - D.banksii (12), D.petiolaris (12 and 19)
Subgen.Drosera Sect.Prolifera - D.prolifera (30), D.adelae (28),
D.schizandra (30)
Sect.Arachnopus - D.indica (28)
Sect.Ptycnostygma - D.brevifolia (20), D.cistiflora
(40,60)
Sect.Oosperma - D.linearis (20), D.filiformis
var.filiformis (20), D.capillaris (20), D.intermedia (20),
D.spatulata (20, 40, 60), D.neocaledonica (40)
Sect.Drosera - D.anglica (40), D.rotundifolia (20),
D.capensis (40), D.cuneifolia (32), D.venusta (40), D.admirabilis
(40) (the latter 2 = D.aliciae?)
Subgen.Bryastrum Sect.Bryastrum - D.pygmaea (I found several from 20-34)
Sect.Lamprolepis - D.leucoblasta (14), D.nitidula (28),
D.paleacea (10)
Subgen.Phycopsis - D.binata 32
Subgen.Ergaleium Sect.Ergaleium - D.heterophylla (30), D.peltata (40),
D.gigantea (28), D.neesii (28), D.macrantha (30)
Sect.Stolonifera - D.ramellosa (26)
Sect.Erythrorhiza - D.erythrorhiza (20), D.macrophylla
(24), D.whittakeri subsp.whittakeri (28)
Thanks for the help!!
Fernando Rivadavia
Tokyo, Japan