TETRANDRIA. MONOGYNIA. 101 



Species. 1. C americana. (Calix 4-tootbed; berries 

 purple, edible; but scarcely wholesome.) Of this i^enus, 

 besides the present species, there are 2 others in the 

 island of Jamaica, 1 in Carthagena, 2 in Peru, 1 in Japan, 

 and 5 in India. 



147. LYCIUM. L, (Box-Thorn.) 



Calix urceolate short, 4 or 5-cleft, or 4 to 5- 

 toothed. Corolla longer, tubulose, border erect, 

 4 to 5-lobcd, or flat, and 4 to 5 parted; orifice, 

 (or margin of the tube) closed by the beard of 

 the filaments. Stamina exserted. Bemj round- 

 ish, 2 celled, many-seeded; seeds reniform. 



Shrubs for the most part spiny; ramuli pung-ently ter- 

 rr.inated; leaves alternate, Sometimes fasciculated; floor- 

 ers axillary, solitary, or by pairs. 



Species. 1. L. caroUnianum. (Without thorns.) — Of 

 this genus there are 3 species indigenous to the South of 

 Kurope, 2 of them at the same time common to Northern 

 Africa, with two others peculiar to this portion of Africa; 

 4 to the Cape of Good Hope; 1 species and a permanent 

 variety were discovered by Pallas in the deserts of Tar- 

 tary, contiguous to the shores of the Caspian sea; 2 

 if not 3 other species appear to be peculiar to Chiaa; and 

 6 to Peru. 



148. CENTAURELLA. Michaux. CEJfTAURt- 

 UM. Per soon, 



Cij/f.u 4- parted, appreFsed. C'oroZZa subcam- 

 panulate, 4 -parted; segments somewhat erect. 

 Stigma thick, glandulous, and ;)arlly bifid. Cap- 

 sule 1-celied, 2-vaIved, many seeded, surround- 

 ed by the persistent calix and corolla. 



Sm.all annuals; appearing almost leai^ess: leaves minute, 

 opposite, sessile, subulate. Flowers subpaniculate. 



SpECicS. 1. C. verjia. 2. aestiva'e,T'vKSH. Probably 

 a mere variety of the following. S. panicukua. {Bartonia 

 tcnella, Muhlenberg'.) 



A North American genus, nearly allied to Gentiana, 



149. EX A CUM. L. 



Calix deeply 4-parted. Corolla 4-ckft; X^JiU- 



K2 



