Karyological Studies in <i>Hemerocallis</i>

Meiosis in Diploid and Triploid Hemerocalus

“…These numbers agree with those given by Takenaka (1929), except that his H. fulva was also a triploid while mine was diploid, and is evidently the type from which the triploid arose.…”

“…Kwanso Examination of metaphase in the triploid showed univalents to be present in aU cells, so that the occurrence of ri trivalents must be a very rare phenomenon. BeUing (1925) illustrates this condition in side view and Takenaka (1929) gives a not very convincing polar view of a cell with ii trivalents, and remarks on the rarity of complete trivalent formation. Generally there are 5 or 6 trivalents present with 6 or 5 univalents and bivalents.…”

Cytological Observations on some W. Himalayan Monocots

“…Kurita (1955) found one indivi dual of this species to be hypertriploid with 2n=22 , the extra chromosome was much smaller than the smallest chromosomes of the triploid plant and was without a satellite. Takenaka (1952) observed 2n=28 in this species . According to Fer nandes (1968) the base numbers in Narcissus are 5 and 7 which probably have been derived from 6 in a common ancestor.…”

Sporogenesis and Embryo Sac Development of Hesperocallis and Leucocrinum in Relation to Their Systematic Position

“…The basic chromosome number of each of these four is different, viz. : Hosia, .r = 30 (Whitaker, 1934); H emerocallis, .r = II (Takenaka, 1929;Dark, 1932;Stout, 1932); Leucocrinum, .r = 14; and Hesperocallis, .r = 24.…”