PENTANDRIA.— DIGYNIA. 13S 



HAB. New-Jersey ? U . Root tub. ; stem 2—3 ft. 



high, irichot. above ; leav long ; fl. wh. or pale blue. 

 E. virgtnianum : leaves long-lanceolate, serrate ; in- 



volucrum longer than the heads ; chaff tricuspidate. 

 HAB. Shores of rivers. U- Root tub. ; stem 3 — 4 ft. 



high ; leav. 6 in. long ; heads num. ; fi. wh. or blue. 

 E. virgatum : leaves spathulate-ovate, irregularly 



toothed ; leaflets of the invojucrum linear, longer 



than the glohose heads ; chaff tricuspidate. 

 HAB. Wet meadows. U- ? Stem 2 — 3 ft. high; leav. 



2 in. long, acutely dent. ; heads small; fi. blue. 



202. SANICULA. Sanicle. Umbelliferce. 

 S. marilandica : leaves all digitate ; leaflets oblong. 



incisely serrate ; staminiferous flowers numerous, 



pedicellate. 

 HAB. Woods and thickets. June— Aug. % . Stem 



2 ft. high ; fi. in small capit., umb. white. 

 }. canadensis : leaves subternate ; leaflets ovate 



coarsely toothed. 



203. HYDROCOTYLE. Marsh penny-wort, 

 Umbelliferce. 



H. vulgaris : leaves peltate, orbicular, crenate ; um- 

 bels capitate, about 5-flowered. 



HAB. Wet places. 1J. . Root creep. ; fl. in intcrup, 

 spikes ; fl. whitish. 



H. vmbellata: leaves peltate, crenate, emarginate at 

 the base ; umbel of many pedunculate flowers. 



HAB. Wet places. U . Root creep.; leav. sub renif. : 

 umb. 20 — 30-fi., longer than the leav. ; fl. renif. 



H. americana : smooth ; root tuberous ; leaves reni- 

 form, somewhat 7-lobed, crenate ; umbels few- 

 flowered, sessile. 



HAB. Wet shady places. June — Aug. U • Cre(> 

 stemfilif. ; umb. very small, glomerate. 



H. ranuncxiloides: leaves somewhat 5-lobed, cordate 

 crenate-dentate ; umbels capitate, 8 — 10-flowered 

 Pennsylvania. June. U. Leav. nearly circular , 

 I (inc. 1 in. long ; pedicels very slu.rt. 



II. lincata: very smooth, creeping; leaves s. 

 cuneate-linear, with transverse nerves ; umbel* 

 nnculate. 



M 



