228 UMBELLIFERAE 



1. HYDROCOTYLE h. 



Leaves with nearly orbicular peltate blades. 



Umbels sitaple. i. //. umbellata. 



Umbels proliferous. 2. H. Canbyi. 



Leaves with reniform not peltate blades. 



Umbels nearly sessile : leaf-blades shallowly 5-13-lobed. 



3. H. Americana. 



Umbels long-peduncled : leaf-blades 3-7-cleft. 4. H. ranunculoidei. 



1. Hydrocotyle umbellata L. Umbellate Marsh-pennywort 

 (Man. p. 671 ; I. F.y. 2J03.) In swamps and low grounds, eastern Mass. 

 to Fla. and the W. I., Minn., Tex. and Max. Also in S. Am. — Pennsyl- 

 vania : Bucks, Bristol ; Philadelphia ; Huntingdon ; Delaware. 



2. Hydrocotyle Canbyi C. & R. Canby's MARSH-PENN\nvoRT. 

 (Man. p. 671 ; 1. F./. 2/04.) In moist ground, N. J. to Fla. — Pennsyl- 

 vania: Bucks. 



3. Hydrocotyle Americana L. American Marsh-pennywort. 

 (Man. p. 672 ; I. F./. 2/06.) In wet places, N. S. to Minn., Pa. and N. 

 C. — Pennsylvania : Pike ; Monroe ; Northampton ; Bucks ; Dela- 

 ware ; Chester ; Franklin ; Luzerne ; Columbia ; Huntingdon ; 

 Somerset ; Allegheny. 



4. Hydrocotyle rantmculoides L. f. Floating Marsh-pennywort. 

 (Man. p. 672 ; I. F. /. 2joj.) In ponds and swamps. Pa. to Fla., near 

 the coast, west to Tex.; Ore. to L. Calif. Also in C. and S. Am., 

 Abyssinia and WaX^ .— Pennsylvania : Chester ; Lancaster ; York : 

 Dauphin ; Franklin. 



2. SANICULA L. 



Plants perennial : stamens and style exserted. 

 Petals and anthers greenish white : sepals linear-subulate : fruit about 6 mm. 

 long. I. S. Marylandica. 



Petals and anthers yellow : sepals ovate : fruit about 3 mm. long. 



2. 5. gregaria. 

 Plants biennial : stamens and style included. 



Pedicels of the staminate flowers 1-2 times the length of the calyx. 



3. S. Canadensis. 

 Pedicels of the staminate flowers 3-4 times the length of tlie calj'x. 



4. S. trifoliala. 



1. Sanicula Marylandica L. SaniclE. Black Snake-root. (Man. 

 p. 672 ; I. F. f. 2664. ) In rich woods, Newf. to Alberta, Ga., and Colo. — 

 Pennsylvania : Monroe ; Northampton ; Bucks ; Delaware ; Ches- 

 ter ; Lancaster ; Huntingdon ; Erie ; Allegheny. 



2. Sanicula gregaria Bicknell. Clustered Snake-ROOT. (Mau. p, 

 673 ; I. ¥./. 266J.) In woods and thickets, Vt. and Ont., to Minn., Va., 

 Kans. and Neb. — Pennsylvania : Monroe ; Bucks ; Northampton. 



3. Sanicula Canadensis L. ShorT-stylEd Snake-root. (Man. p. 

 673 ; I. F. /. 2666.) In woodlands, Vt. to Fla., S. Dak. and Te:^.— Penn- 

 sylvania : Northampton ; Bucks ; Philadelphia ; Delaware ; Ches- 

 ter ; Lancaster, Franklin; Fulton; Erie; Allegheny. 



