104 DICOTYLEDONOUS. 



inflexed point. Fruit sub-globose, laterally compressed. — 

 Carpels ribbed. Seeds nearly terete. Perennial herbs, with 

 pinnately divided leaves. Flowers in many rayed umbels. 



1. S. LiNEARE. Stem angular ; segments of the leaves linear lanceolate, 

 serrate. Involucre 5-6-leaved. Umbels with about 20 rays. Petals with an 

 obtuse, inflexed point. Fruit strongly ribbed, obovate. Water Parsnip. 



White. %. June— July. Florida. 2-5 feet. 



Genus X: NEUROPHYLUM. 



Margin of the calyx 5-toothed, persistent. Petals obovate, 



with an inflexed point. Fruit ovate, laterally compressed, 



minutely ribbed. Seed nearly flat on one side, convex on 



the other. 



1. N. LoNGiFOLiUM. Stem glabrous, slender, striate above. Leaves ter- 

 nately divided, with long, linear, entire segments, the upper ones undivided, 

 rays of the umbel 10, slender. Involucre 2-4-leaved; involucels 5-6-leaved. 

 White. % Sept. Near Macon, Ga. 3-4 feet. 



Genus XL GRYPTOT^NIA. 



Margin of the calyx obsolete. Petals obcordate, with an 

 inflexed, narovv point. Fruit linea,! -oblong. Carpels obtuse- 

 ly ribbed. Seed teretely convex on one side, the other slightly 

 concave. Perennial herbs, with ternate leaves. 



1. C. Canadensis. Stem erect, glabrous, with many branches ; leaflets 

 ovate, acute, sometimes notched, radical ones 2-3-lobed, serrate. Umbels 

 numerous, rays unequal. Involucre none ; involucels few leaved, small, sub- 

 ulate, with abortive flowers in each umbel. Seeds acuminate pointed, with 

 persistent styles. 



White. %.. June — Sept. In shady, rich soils. 3-3 feet. 



Genus XII. ZIZIA. 



Margin of the calyx obsolete, or 5-toothed. Petals oblong 

 with an inflexed point. Fruit compressed, roundish, or oval. 

 Carpels ribbed. Seed convex on one side, flat on the other. 

 Perennial herbs. Leaves ternately divided. 



1. Z. Aurea. Stem erect, glabrous, terete. Leaves bitemate ; seg« 

 ments oblong-lanceolate, serrate, terminal one alternate at the base, serrulate, 

 glabrous. Vmhel \Q--lb rayed, involucel of 2-3 very small leaflets. Fruit 

 eliptical, nearly black when mature. 



Yellow. %. May. Common. 1-2 feet. 



2. Z. Integerrima. Stem glabrous, and slightly glaucous. Leaves 2-3 

 ternately divided, terminal leaflet usually 2-3-lobed; segments oblong-ovate, 

 entire. Umbels on slender peduncles, with long slender rays. Involucels 

 of 1-3 subulate leaflets. Fruit roundish-ovate, with prominent ribs. 



Yellow. %. May — June. Common. 1-2 in. 



Genus XIII. THASPIUM. 

 Limh of the calyx toothed, or nearly obsolete. Petals elip- 



