314 PENTANDRIA. DIGYNIA. hbracleum. 



lobes incised and serrate. Umbels very large, terminal, many- 

 rayed. Partial involucra 5—6 leaved; leaflets lanceolate, acu- 

 minate. Calyx minute. Petals white, oblong. Styles subu- 

 late, reflexed. Fruii much compressed, round-oval, with the 

 ribs slightly elevated. 

 Hab. Ill wet meadows. June. Coio-Parsnifu 



Allied to H. Sfihondylium^hnt quite distinct. 



212. PASTINACA. L. 



Fruit oval, compressed, flat, margined ; ribs obso- 

 lete ; intervals striate ; commissures 2. Universal and 

 partial involucra 0. Roe m. 8? S chul t. Gen. 1217. 



\,V, saliva L. : stem sulcate ; leaves pinnate; leaflets 

 lubpubcscent beneath, oblong, incised ; terminal one .S-lobed. 

 W illd. Spec, I. p. 1466. Smith FL Brit. I. p. 328. Eng. 

 Boi.i.bbQ. Pursh Fl. Uip. 136. R o em, ^ S chult, 

 VI. p. 383. 



Root biennial, fusiform. Stem 2 feet high, smooth, sulcate. 

 Leaves simply pinnate ; leaflets sessile, incisely lobed, smooth 

 above. Umbels numerous, large, terminal. Floivers yellow. 

 Fruit much compressed. 



Hab. In fields and waste places. July— September. Intro- 

 duced. Commo7i Parsnip. 



2. r.rigida S p r en g.: Stem terete, striate ; leaves pin- 

 nate, smooth ; leallets oblong-lanceolate, entire or with se- 

 veral remote teeth ; partial involucra subulate. R o em. t^- 

 Schtilt. VI. p. 586. SiuM rigidius L. Willd. Spec. I. 

 p. 1433. Pursh FL I. I). 194. M u h I. Cat. ^p. 30. Si- 

 Son marginatum Mich. FL I. p. 168. (Enanthe WgiWa 

 J>futl, Gfjj. I. p. 189. PiMPiNELLA foliis lanceolatis, &c. 

 Gron. Virg. p. 32. (Enanthe maxima virginiana, &c. 

 Mo vis. Sect. IX. t. 7. 



JRoot perennial. Stem 2 — 4 feet high, erect, rigid, fistulous. 

 Leaves ail simply pinnate ; leaflets 4 — 5 pairs, sessile, acute, 

 2 — 4 inches long, often with a narrow discoloured margin ; 

 the inferior ones with several very remote acute and subre- 

 pand teeth. Umbels about 3, terminal, on long peduncles ; 

 rays numerous, spreading, filiform ; central flowers abortive. 

 Universal involucrum ; partial involucra of 6—8 subulate 

 leaves. Calyx 5-toothed, acute. Styles very short, dilated at 

 the base, divaricate; «?f5'7/2as simple. Pe^a/s white, coi date, 

 with an inflected point. Fruit oval, much compressed, corti- 

 cate ; ribs or striae 5, approximate ; intervals convex, coloured. 



Hab In swamps in the pine barrens of New-Jersey. In Penn- 

 sylvania and Maryland. Mu hlenberg. September. 



