174 TENTANDKIA. DIGYNIA. 



Q51, EVOLVULUS. i. 



Calix 5-i)arted. Corolla rotate-campaniilate^ 

 lobes snbemarginate. Sttjles 2, deeply bifid; 

 segments capillaiy and divergenf. Stigma sim- 

 ple. Capsule £-ceIled, 4-valved, 2 to 4 seeded. 



Stejn creeping", procumbent, or erect. Leaves alter- 

 nate entire; flowers pedunculate, small; peduncles soH- 

 tary, bibracteate, capsule perfecting- 1, 2. or 4 seeds. 



Species. 1. E. m/imnvlarius. On the banks of the 

 Mississippi, near Ne\y Orleans. 2. sericeusP Stem diffuse 

 and procumbent? Leaves remote, sessile, oblong-lanceo- 

 late, sublinear, acute at both extremities, under side, 

 somewhat silky villous; peduncle l-flo\vered, shorter than 

 the leaf, bibracteate, bracces seated in the axill. Obs. 

 Stem almost filiform, somewhat villous; leaves 5 to 10 

 lines lonj^, 1 to 2 lines broad, peduncles 2 to 3 lines long-; 

 flower V. hite, convolvulaceous, plaited, external margin of 

 ihe plaits villous; segments of tlie calix ovate, acuminate; 

 capsule 2-celkd, 4-valved, 2-seeded. II ab. Around St, 

 Vlary's, in Florida, Ur. Baldwyn v. s. 



3. argcnteuS) P«. (piloi;i/s.) Perennial; stems simple, 

 erect, and low, many from the same root: the whole plant 

 densely hairy and sliining: leaves cuneate-oblong", acute, 

 crowded; peduncles 1-floweied, subsessiie; bibracteate, 

 bractes sessile in the axill; segments of tlie calix linear — 

 Obs. Allied to E. Conmier-soni. Stems 4 to 6 inches high': 

 leaves 6 to 8 lines long-, 2 to 4 wide, extremely hairy as 

 well as the stem; flowers solitar} , appearing- sessile, pur- 

 ple, edge of the plaits hairy, capsule 4-valved, often per- 

 fecting- only a single seed. — Hae, On and gravelly hills 

 j-sear the coiifiuence of Rapid river and the Missouri;flow- 

 cring in May. This genus, with the above exceptions, 

 exists exclusively within the tropical regions of India, 

 Australia, and America. 



ff Flowers pentapetalojis, infenor, 



25£i. HEUCHERA. L, (Allum-root.) 



Calix 5-cIeft. Petals 5, small. Capsule hiroS' 

 trate, bilocular, many-seeded. 



Leaves radical; flowers small, in a thyrsoid panicle. 



Species. 1. // americaiia. 2. v/llosa. On tlie moun- 

 tains of North Carolina^ Virg-lnia, and Tennessee. 3- 

 cnuhscens, Vii. 



