Rivina PliYTOLACCACE/T-: l^T) 



sperma ; cotyledons foliaceous ov semiterete, sometimes one 

 much larger than the other, convolute or folded on themselves. 



Species about 90, mostly natives of tropical and subtropical 

 religions. 



Perianth of a single series. 

 Perianth-segments \. 

 Fruit globose. 



Stamens 4. Stigma capitate 1. Rivhui. 



Stamens 8-16. Stigma peuicillate 2. TricliostUjma. 



Fruit elongate, with deflexed hooks at apex 3. Petiveria. 



Perianth-segments 5. 



Ovary one-celled, with 2 stigmas G. Microtea. 



Ovary several-celled, with as many stigmas as 



cells 4. Phytolacca. 



Perianth of calyx and corolla 5. Stcf/iiospervm. 



1. RIVINA L. 



Erect herbs, shrubby below. Leaves alternate, or subopposite 

 on shortened branches. Flowers hermaphrodite, in racemes. 



>'i''. 7r.\. ]:!riiia huinili6 L. 



A, Upper portion of hrancli x n. 

 B Flower-bud X 7. 

 C, Flower x 7. 

 J), Fruit X r.. 



E, Section of seed x .'> ; ', eiidospenn 

 c, cotyledons ; I, lohed Imse of eotv- 

 lodon ; r, nuiicle. 



Bracts and Ijracteoles minute, deciduous. Perianth corolline, 

 4-cleft ; sc^gments increased in fruit. Stamens 4. Ovary of one 



