144 PENTANDRIA, DIGYNIA. 



lacerately serrate ; umbel terminal, solitary, 

 lateral branchlets bulbiferous. — J\*utt, 



A small and singular plant, resembling Ammi capillaceum. 

 On the shores of the Delaware, near the city; Mr. NuttalL 

 Perennial. July. 



141. URASPERMUM. Xutt Gen. Am. pi. vol. 1. p. 192. 



(UmbeUiferaJ) 



Fruit sublinear, solicit acutely angular, cau- 

 date, and without striae ; angles subsulcate, 

 hispid; commissure sulcate; receptacular 

 axis semibifid ; style subulate, persistent, 

 terminating the fruit. Universal involu- 

 crum none. — Nutt. 



ciaytonL 1. U. stems about a foot high, striated, always 

 more or less pubescent, but at first of a hoary 

 whiteness. Leaves only about 2 on each stem; 

 ternate, with the subdivisions from S to 5-leav- 

 ed ; terminal leaflets rhomboidal, acute, lateral 

 ones more irregular and oblong, sometimes sub- 

 pinnatifidly lobed, but generally incisely tooth- 

 ed, dentures mostly obtuse with a small point. 

 Umbels axillary and terminal, rays about 5. 

 Involucrum wanting, or of 1 or 2 small leaves. 

 Umbellets small, exterior hermaphrodite flow- 

 ers about 5, males about 10, all pedunculate, 

 peduncles of the male-flowers capillary; invo- 

 lucell 5-leaved, linear-lanceolate, acuminate, 

 soon after flowering deflected. Styles filiform, 

 as long as the germ, erect and divaricate, with 

 inconspicuous stigmas. Germ distinctly villous 

 towards the base. No vestige of a calix. Fruit 

 linear-lanceolate, black and shining, subulated, 

 but without rostrum. Seed caudate, (an inch in 

 length, including the cauda, which is about 3 

 lines long) acutely fpiadrangular, without either 

 ribs or striae ; intervals flat and even, cuticle 



