Notes on Indian Commelinaceae-IV: Cyto-Taxonomic Observations

Chromosome numbers of 29 species and one variety under six genera have been studied of which the chromosome numbers of 9 species and one variety are recorded for the first time. Five species show different chromosome number from previous reports. Further cyto-taxonomic evidence confirm that Aneilema (sensu stricto) is distinct from Murdannia. Majority of the Indian species of Commelina and Cyanotis (sensu stricto) show x=15 and 12 respectively. A new genus name Amis-chophacelus Rolla et Kammathy has been proposed for the ochraeflora section of Cyanotis (sensu lato) on the basis of clear cyto-taxonomic evidence. Aneuploidy, euploidy and intra-specific polyploidy have been observed in different species of Murdamia. Both morphological as well as cytological evidence do not suggest the separation of Aclisia from Pollia. Consideration of the hairy form of Streptolirion as S. volubile var. khasiana seems to be approprate. A new combination is proposed.