PA£TiNACA. PENTANDRIA. DIGYNIA. 315 



2. P. ambigua^ : stem slightly angular ; leaves pinnate, 

 smooth: leaflets linear, entire, subglaiicous beneath ; umbels 

 terminal, subsolitary ; partial involucra subulate. OEnanthe 

 ambigua J^utl, Gen. I, p, 189. Sium longifoluim Pursh 

 FL I. p. 194. 



Root perennial. Stem 3 — 5 feet high, erect, very smooth, fistu- 

 lous. Leaves few, all pinnate ; leaflets narrow-linear, or linear- 

 lanceolate, 3 — 6 inches long, thickish and rather rigid, very 

 rarely with one or two minute teeth on the mart^in. Umbel 

 subsolitary, on a long terminal peduncle; spreading ; central 

 flowers often abortive. Universal i-nvolucrum wanting; par- 

 tial involucra of 3 — 5 subulate leaves. Calyx minute, 5-tooth- 

 ed. Petals white, cordate, with an inflexed point. Styles 

 very short, dilated at the base, divaricate. Fruit flat, smooth, 

 oval, corticate ; strite prominent, with the intervals coloured. 



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

 marshy banks of the Delaware. M u 1 1 a 1 1. September. 



This species is nearly allied to the preceding, of which it is 

 possibly but a variety. 



213. ANGELICA. L. 



Fruit subconipressed, with 3 acute winged ribs; 

 intervals sulcate ; margin membranaceous, Roem. 

 ^ Schult. Gem 1220. 



1. A, triquinala M i c h,: stem terete, pubescent above ; 

 leaves ternate, very smooth, the partitions quinate ; leaflets 

 oblong ovate, equally serrate ; inferior 'ones 2-lobed at the 

 base. M i c h. FL I. p. 167. Pursh FL I. p. 193. E I- 

 liott Sk.l.p.352: ^rutt.Gen,l.p.\86, Rocm.i^ 

 5'cAM/f. VI. p. 604. A.hirsutaMuhLCat.^.SQ. Pas- 

 tinaca triqmnata Spreng. Umb, Spec, p. 68. t. 6. f. 2. 

 Fekvla villosa Walt, Car. 115. PurshFL I. p. 1'92, 

 excl. syn. Cicut^, ventnata. 



Root perennial. Stem 3 — 5 feet high, simple, erect, straight, 

 white-viilous and sulcate below the umbel. I^eaves on long- 

 naked petioles, which are only a little sheathing at the base, 

 ternate, and again subdivided ; the partitions 5 — 7-leaved ; 

 leaflets ovate or subrhoniboid, rather obtuse, on short petioles, 

 or abruptly attenuate at the base, thick, moderately serrate ; 

 the inferior ones deeply 2-lobed at the base, and thus appear- 

 ing auriculate. Umbels generally 3, terminal, many-rayed, 

 spreading, with 2 opposite inflated petioles at the divisions, 

 bearing minute leaves. Universal involucrum wanting ; par- 

 tial of 6 — 8 subulate unilateral leaves. Calyx 5-toothed. Pe- 

 tals white, obcordale, witli a long inflexed point. Styles subu- 

 late, divaricate. Fruit oval, compressed; margin winged; 

 ribs 3, elevated, acute, approximate, parallel. 



