Cytological Investigations in Desmodium and Lespedeza

Cytological Studies in the Genus Desmodium; Some Chromosome Counts

“…Early reports (Serm, 1938;Young, 1940) indicated that the basic chromosome number is x = 11. Turner and Fearing (1959) reported 2n = 20, for Desmodium ealicifolium, This count by Turner and Fearing was the first report of a different base number, x = 10, thus indicating that the genus is not monobasic as reported earlier.…”

Reproduction in the Cleistogamous Flowers of Ten Perennial Species of Lespedeza

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DIVERSE ACCOUNTS have been given of the occurrence and function of stamens in the cleistogamous" flowers of Lespedeza. In a cytological study, Young (1940) found that anthers of L. capitata var. Blake (1924) also noted that the stamens in these species were greatly reduced or "perhaps entirely wanting."

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“…In a cytological study, Young (1940) found that anthers of L. capitata var. In a cytological study, Young (1940) found that anthers of L. capitata var.…”

“…He concluded that the cleistogamous flowers were self-fertilized.In a taxonomic treatise of the genus, Schindler (1913) assumed that the cleistogamous flowers of Lespedeza developed parthenogenetically, contributing to a concept that reproduction in the two flower types was basically quite different. In a cytological study, Young (1940) found that anthers of L. capitata var. velutina from two widely separated localities failed to reach full size, "apparently withering before anthesis."…”