Abstract
1. Cytological studies on chromosome number and morphology and embryo sac development have been made on Leucocoryne ixioides in order to compare it with Allium, Nothoscordum, and Brodiaea.
2. Nine haploid chromosomes were found in the pollen grain division: two short with terminal attachments, and seven long with median or sub-median attachments. This configuration resembles those of Nothoscordum and the 9-paired Allium species, but not those of Brodiaea.
3. The macrospore mother cell divides giving rise to two macrospores, one of which degenerates. The other divides three times giving rise to eight nuclei which become arranged in the “normal” way. This behavior is similar to that in Allium and Nothoscordum.
4. The evidence presented points to a closer relationship between Leucocoryne and Allium and Nothoscordum than between the former and Brodiaea.
