MENISPERMACE.E 75 



Plate 30. 

 CALYCOCARPUM, Nutt. 



Sepala 6. Petala nulla. Stamina 12, discreta : antherae 

 biloculares introrsum adnata?. Ovaria 3 : stigma umbilica- 

 tum, radiato-multifidum. Drupa ovoidea, stigmate terminali 

 notata : putamen lasve, tenui-crustaceum, ventre profunde 

 excavatum cymbiforme. Embryo lamellseformis, in albu- 

 mine tenui leviter incurvus : cotyledonibus foliaceis per mar- 

 gines ad medium connatis, deinde divergentibus, late cordi- 

 formis ; radicula brevissima supera. 



Calycocarpcm (Sect. Memspermi), Nutt. in Torr £ Gray, Fl. N. Am. 

 1. p. 48. 



Flowers dioecious. Calyx minutely one-bracteolate at the 

 base, of 6 equal and similar petaloid oblong-obovate sepals, 

 in two series, imbricated in aestivation, spreading, deciduous. 

 Petals wanting. Ster. Fl. Stamens 12, distinct, occu- 

 pying the centre of the flower : filaments slender, slightly 

 flattened and dilated upwards : anthers introrsely adnate, 

 strictly two-celled, the oval cells opening longitudinally 

 down the inner face. Fert. Fl. Abortive stamens 6, 

 short, with small and imperfect anthers. Pistils 3, sessile, 

 one-ovuled : ovary fusiform, straight, terminated by an um- 

 bilicate and radiately laciniate dilated stigma. Ovule . . . 



Drupe oval, tipped by the vestige of the terminal stigma ; 

 the sarcocarp thin: putamen smooth, crustaceous, broadly 

 convex on the back, very deeply and broadly excavated on 

 the ventral face, so as to become cup-shaped or boat-shaped 

 (the transverse section between crescent-shaped and horse- 

 shoe form, the vertical section also crescent-shaped), lightly 

 marked by dorsal and ventral sutures, which incline to open, 

 and by which it may readily be separated into 2 hall-carpels ; 

 the continuous cell very wide and shallow. Seed pendu- 



