104 TETRANDRIA. MONOGYMA, 



SpEcizs. \. A- vamosior 2. JvimlUs. — Of 9 species now 

 eiiuiDerated, includin,^ the above, 3 are iadij^enous to In- 

 dia, 1 to Ilaly, 1 to Senegal, and 2 to the West Indies. 



354. PTELEA. L, 



Calix 4-parted, iiifoHor. Pdals 4, spreading. 

 Stigmata 2. Capsule (samai-a) compressed, 

 membranaceous, witii a broad and circular 

 margin, 2-celled, 2 seeded. 



A shrub with alternate leaves; mostly teiTjate, rarely 

 5-leaved; flowers ulu.ost corymbose, axillary and terrrinal, 

 odoious. Kach cell o. th;; geim 2 seeded, one ot the seeds 

 liubiiualiy abortive; su mi :a somctinies 6, with 5 petals, 

 and the samana S-celKfi, 3 wini^ed. 



Species. 1. P trifodata. — \ Noilh American genus, 

 row reduced to a sniqle s jecies, near'y allied to the 

 Blackbiirnia of the island of Norfolk in the Pac'fic The 

 p. vionophylla of Lamark, a) pears to be tlie J\'hjhcnruiin 

 Ugiistvinum! Probably a bad specimen in fruit and with- 

 out flowers. 



Iff Jlpetalous. 



155. RIVINA. L. 



Calix 4-par{;cd, pf^rsistent. Petals 0. Bcrrij 

 1 -seeded. Seed ienlitorm, si abrous. (^Stamina 

 4, 8, and 12.) 



Stems someu'hat slinibby; leaves entire, often acumi- 

 nated; flowers in axillary racemes. (Stem in /?. luevis, her- 

 baceous ) 



Species. 1. li. Jcevis. v. s. in tlie Herbarium of Z. 

 CollinSj Esq. communicated by MuUlenber.i:^, and said to 

 be collected in He msylvania. Possessing" very much the 

 habit of Phytolacca decandra. 



There are 5 species of 'his genus enumerated by Per- 

 soon, all indigenous to the tropical parts of America oa 

 either side the *;quator. Of the R. lavis there is, on che 

 authority of Lamark, a distinct variety in the island of 

 Madagascar. 



156. CAMPHOROSMA. L. 



Calix urceolate, 4 parted, alternate segments 

 lai'ger. Corolla 0. Stamina exserted. Style bifid. 

 Capsule 1-seeded, covered by tlie calix. 



Sten^ shrubby or herbaceous, branching" and diffuse. 



