130 Trans. Acad. Sci. of St. Louis. 



determining whether a given tree produced staminate 

 flowers. 



Pistillate Flowers. 



The pistillate flowers are solitary in the axils of the 

 bract-like leaves and normal leaves near the base of the 

 twigs. The flowers of "Tanenashi," "Okame," and 

 "Tsuru" are very frequently found in the axils of the 

 bract-like leaves, while the flowers of "Triumph," 

 ''Zengi" and "Costata," for example, are generally 

 found in the axils of true leaves. Pedicels 14 to 32 mm. 

 long, covered with minute hairs, curved so as to turn the 

 opened flower downward, provided with two caducous 

 bracts which are 2-3 mm. wide by 8-15 mm. long. The 

 calyx is four parted, large, foliaceous, 25-35 mm. across 

 the expanded lobes. The lobes are pointed or rounded, 

 flattened or with margins reflexed, giving the lobes a 

 more pointed appearance, nearly twice the length of the 

 expanded corolla, outer surface minutely hairy; upper 

 surface of calyx, close to and beneath the ovary covered 

 with a dense hairy cushion. The corolla is 4 parted, 

 light yellow, 10-17 mm, long, quadrangular with blunt 

 angles, lobes reflexed light yellow on inner surface, con- 

 stricted below the lobes, the throat usually somewhat 

 quadrangular, margins of lobes minutely ciliate. The 

 stamens are 8 in number clothed with fine white hairs, 

 the pointed, abortive anthers curved inward over the 

 ovary, filaments nearly as long as the anthers; ovary 

 finally 8-celled, flattened, rounded or pointed, style 

 sparsely hairy at the base, four parted upward; stigma 

 much branched. 



The stoutest pedicels observed are those of the vari- 

 ety "Zengi," 3-4 mm. in diameter; "Tsuru" has longer 

 pedicels than any other variety noted, 20-32 mm. The 

 location of the bracts on the pedicels of different vari- 

 eties is worthy of note. In ''Yemon," for instance, they 

 are close to and often attached to the base of the ovary. 

 On the pedicels of most varieties, the bracts are located 

 about the middle of the pedicel. 



