104 TETRANDRIA. MOXOGYXIA. 



Species. l.A.ramosior 2. humilis. — Of 9 species now 

 enumerated, including the above, 3 are indigenous to In- 

 dia, 1 to Italy, 1 to Seneg-al, and 2 to tlie West Indies. 



154. PTELEA. L, 



Calix 4-parted, inferior. Petals 4, spreading. 

 Stigmata 2. Capsule (samara) compressed, 

 membranaceous, with a broad and circular 

 margin, 2-celled, 2-seeded. 



A shrub with alternate leaves; mostly ternate, rarely 

 5-leaved; flowers almost corymbose, axillary and tern^inal, 

 odorous. Each cell of the germ 2 seeded, one of the seeds 

 habitually abortive; sthinina sometimes 6, with 5 petals, 

 and the samana 3-celled, o-winged. 



Species. 1. P tnfoliata. — A North American genus, 

 now reduced to a single species, nearly allied to the 

 Blackburnia of the island of Norfolk in the Pacific. The 

 P. monophijlla of Lamark, appears to be the JMulocarimn 

 ligustriniim! Probably a bad specimen in fruit and with- 

 out fiouers. 



Iff Jlpetalous. 



155. RIVINA. L. 



Calix 4-parted, persistent. Petals 0. Berry 

 1 -seeded. Seed lentif'orm, scabrous. (^Stamina 

 4, 8, and 12.) 



Stems somewhat shrubby; leaves entire, often acumi- 

 nated; flowers in axillary racemes. (Stem in Ji. lavis, her- 

 baceous ) 



Species. 1. P. Icevis. v. s. in the Herbarium of Z. 

 Collms, Esq. communicated by Muhlenberg, and said to 

 be collected in Peinsylvania. Possessing very much the 

 habit of Phytolacca decaiulra. 



There are 5 sjjecies of this genus enumerated by Per- 

 soon, all indigenous to the tropical pans of America on 

 either side the equator. Of the R. Icevis there is, on ihe 

 authority of Lamark, a distinct variety hi the island of 

 IMadagascar. 



156. CAMPIiOROSMA. Z. 



Calix urceulate, 4 parted, alternate segments 

 larger. Corolla^, >S^^fl?/mifl exserted. *S7t/^e bifid. 

 Capsule I -seeded, covered by the calix. 



Stem slirubby or hsfbaceous, branching and diffuse, 



