Cytological Studies in Relation to the Classification of the Genus Calochortus
Copyright policy )Cytological Studies in Relation to the Classification of the Genus Calochortus
1. Chromosome counts for the following species and varieties of Calochortus are reported: C. elegans var. nanus.-Diploid, 20 chromosomes; 10 bivalents at metaphase I of meiosis. C. longebarbatus.-Diploid, 20 chromosomes; 10 bivalents at metaphase I of meiosis. C. longebarbatus var. peckii.-Triploid, 30 chromosomes; irregular pairing at metaphase I of meiosis. C. flexuosus.-Diploid, 14 chromosomes. C. palmeri.-Diploid, 14 chromosomes; 7 bivalents at metaphase I of meiosis. C. kennedyi var. munzii.-Diploid, 16 chromosomes. C. ambiguus.-Diploid, 18 chromosomes; 9 bivalents at metaphase I of meiosis. All previously reported meiotic counts have been confirmed in material of known geographical origin and certain identity. Meiotic counts have been made in the following species and varieties for which this number might be inferred from the previously-reported mitotic count: C. elegans, 10 bivalents; C. elegans var. selwayensis, 10 bivalents; C. lobbii, 10 bivalents; C. nudus, 10 bivalents; C. nitidus, 10 bivalent...
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