OUDEI: 63. UMBELLIFER.E. 135 



t Fruit rounJ-ovate. Petals concave, not emarginate. Vittrc single Ar. CM. 25 



o Petals inflected, emarginate. Vitte CO PIMPINELLA. 17 



I Ribs of the carpels obsolete. Fruit ovate, covered with large vittae EULOPHUS. 26 



I Ribs of each carpel 9. Fruit globular. Outer flowers radiant CORIANDRUM. 30 



I Ribs of each carpel 5. x Fruit round, didymous CICUTA. 27 



x Fruit oval. Leaves pinnate SIUM. 28 



x Fruit ovate. Leaves capillaceous DISCOFLEUKA. 29 



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

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

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

 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, 5 



1 H. A in erica, ii a L. St. filiform ; Ivs. round-reniform, slightly lobed, crenate ; umb. 



sessile, 3-5-flwd. ; fr. orbicular, u Damp shades. 2 6'. Plant very smooth and shining. 



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



ped. 12', branched ; umbels 5-9-flwd., capitate, u Waters. Pa., and S. Lvs. veiny, 4-S'. 



3 H. re pa 11 da Pers. Lvs. broad-ovate, cordate, rounded, margin repand-deutate ; 



ped. 23', simple ; umb. capitate, 3 or 4-flwd. ; invol. 2-bracted. 24 Muddy shores, S. 



4 H. iimbellata L. Lvs. crenate, with a notch at base, long-stalked (460 5 scapes 



4 6', bearing a simple (rarely proliferous) umb. of 20-30 fls. "U Ponds, bogs. Ms. to La. 



5 H. iiiterrupta Muhl. Lvs. creuate ; umb. proliferous, 5-flvvd. y. Wet. Ms. toGa. 



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. 



C. lineAta Nutt. Lvs. cuneate-liuear, sessile, obtuse at apex, and with transverse 

 veins, shorter than the peduncles, y. Muddy banks, coastward. Uinb. 4-8-flowered. 



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

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

 armed with hooked prickles. Carpels without ribs. Vittae numerous. 

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

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



1 S. iff arllaiidica. 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. <jaiiadeusis 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. LVR. 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 vittaa or ribs. "U (2) Fls. bine or white, brac- 

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



* Scales and chaff of the heads entire, often spinescent Nos. 1 3 



* Scales and chafl' of the heads tricuspiclatc. a Flowers white Nos. 4, 5 



a Flowers blue Nos. 6, 7 



\ K. yuccaefoliuin MX. Erect ; Ivs. broadly linear, parallel-veined, ciliate with re- 

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

 at Prairies and pine-barrens*, \V. and S. 2 5f. Fls. white, inconspicuous. J1 M Aug. 



