OIIDEK 03. UMBELLIFER/E. 135 



k Fruit round-ovate. c Petals concave, not emarginate. VittiB single AP DM. 29 



1'etals inflected, emargiuate. Vittae 00 PIMPINELLA. 17 



t Rib* of the carpels obsolete. Fruit ovate, covered with large vittse KULOPIIUS. 26 



( Ribs of each carpel 9. Fruit globular. Outer flowers radiant Com ANDRUM. 30 



{ Bibs of each carpel 5. x Fruit round, didymnus CICOTA. 27 



x Fruit oval. Leaves pinnate SIUM. 28 



x Fruit ovate. Leaves capillaceous DISCOPLKURA. 29 



1. HYDROCOTYLE, L. PENNYWOIIT. Calyx limb obsolete. Pet. 

 spreading, the point not inflected. Fr. laterally flattened, the commissure 

 narrow. Carpels 5-ribbed, without vittse. Z? Low, smooth, creeping. Umh. 

 simple. Invol. few-leaved. Fls. small, white. June Aug. Figs. 334-5. 



* Leaves reniform or cordate, the base lobes not united Nos. 13 



* Leaves peltate, orbicular, the base lobes united Nos. 4. r. 



1 II . Americana L. St. filiform ; Ivs. round-reniform. slightly lobed, crenate : nmb. 



sessile, 3-5-flwd. ; fr. orbicular, v. Damp shades. 2 (/. Plaut very smooth and shining. 



2 H. rauunculoides L. /. Lvs. round-reniform, deeply 3-5-cleft, lobes crenate ; 



ped. 12', branched ; umbels 5-9-flwd., capitate, v. Waters. Pa., and S. Lvs. vc'ny. 4-8'. 



3 H. repauda Pers. Lvs. broad-ovate, cordate, rounded, margin repand-iientatc : 



ped. 2 3', simple ; umb. capitate, 3 or 4-flwd. ; invol. 2-bracted. ii Muddy shores, S. 



4 H. umbel la ta L. Lvs. crenate. with a notch at base, long-stalked (40') ; scapes 



4 t/, bearing a simple (rarely proliferous) umb. of 20-30 fls. if. Ponds, bogs. Ms. to La. 



5 II. lutcrrupta Muhl. Lvs. crenate ; umb. proliferous, 5-flwd. at Wet. Ms. to Ga. 



2. CRANTZIA, Nutt. Calyx margin obsolete. Pet. obtuse. Fr. sub- 

 globous. Carpels unequal, 5-ribbed, with a vitta in each interval. ? Small, 

 creeping, with linear or filiform, entire Ivs. Umbels simple, involucrato. 

 '. MucAta Nutt. Lvs. cuueate-linear, sessile, obtuse at apex, and with transverse 



veins, shorter than the peduncles, it Muddy banks, coastward. Umb. 4-8-flowered. 



3. SANICULA, Tourn. SANICLE. Fls. $ $ 3. Cal. segm. acute, 

 leafy. Pet. obovate, erect, with a long, inflected point. Fr. subglobous 

 armed with hooked prickles. Carpels without ribs. Vittae numerous 

 U Umbel nearly simple. Rays few, with many-flowered, capitate umbel 

 lets. Involucre of few, often cleft leaflets, involucel of several entire. 



1 S. Ittarllaiidlca L. Lvs. 5-7-parted, digitate, mostly radical ; segm. thick, oblong, 



incisely serrate ; sterile fls. many, pedicellate, fertile ones sessile ; cal. segm. entire ; 

 styles slender, conspicuous, recurved. Woods : common. 2 3f. May July. 



2 S. Caiiadensls L. Lower Ivs. 5-parted, upper 3-parted ; segm. cuneate-obovate, 



mucronate-serrate ; sterile fls. few. much shorter than the fertile; sty. shorter than 

 the prickles. Woods, thickets: com. l-3f. Lv*. thin, 1-3'. Umb. few-flwd. Jn.-Ang. 



4. ERYNGIUM, Tourn. Fls. sessile, collected in dense heads. Cal 

 lobes somewhat leafy. Pet. in flexed. Sty. filiform. Fr. scaly or tubercu 

 late, obovate, terete, without vittae or ribs. 11 (2) Fls. blue or white, brac- 

 teate ; lower bracts involucrate, the others smaller and chaffy. Summer. 



* Scales and chaff of the heads entire, often spinescent Nos. 18 



* Scales and chaff of the heads tricuspidate. a Flowers white Nos. 4. C 



a Flowers blue Xos. 0. 7 



1 K. yuccaefolium MX. Erect ; Ivs. broadly linear, parallel-veined, ciliate with re- 

 mote, soft spines; invol. bracts entire, spinescent, shorter than the ovoid-glob, heads. 

 V Prairies and pine-barrenn, W. and S. 2 5f. Fls. white, inconspicuous. Jl., Ang 



