Chromosomes in Cryptocoryne

Chromosome counts give a major understanding of the relations in the genus Cryptocoryne. According to Arends et al. (1982), species are grouped and are listed below. For further understanding of the diverse patterns, pollen analysis reveal a intense hybridisation in nature. See the link at the end of this page.

Click on the picture to get the full image (ca 50 kB)

bec2n=28m.jpg (6226 bytes) lon2n=30m.jpg (6366 bytes)
C. beckettii 2n=28
coll. unknown, cult. B 92
C. hudoroi 2n=20
coll. unknown, cult. B 398
C. longicauda 2n=30
coll. unknown, cult. B 208
C. minima 2n=34
coll. Wilde 19404, cult WAG 79-231
       
   
C. pallidinervia 2n=34
coll. Driessen, cult B 104
C. bangkaensis 2n=68
coll. unknown, cult. B 395
       

All photo's by Coen Arends, Wageningen University (1982)

(You did check to counts,  did you?)

The technique of counting chromosomes is rather complicated and laborious. You need a pretty good microscope and moreover, you must be experienced to get the right interpretation. Not all pictures are like these above!

See also the page on Chromosome and pollen fertility counts

Updated July 2012