ERyNnGiIuM. LXVIU. UMBELLIFERZ. 285 
4. H. RanuNcuLGipes. Linn. f. (H. cymbularifolia. Mudi.) 
Glabrous ; /vs. roundish-reniform, 3—5-lobed, crenate ; petioles much longer 
than the peduncles; wmbels 5—10-flowered, capitate ; fr. roundish, smooth—In 
water, Penn. toGa. Stems weak, 1—2flong. Leaves 1—2’ diam., the middle 
lobe smaller than the others. Petioles2—3’ long. Peduncle about 1’ long. Jl. Aug. 
2, CRANTZIA. Nutt. 
In honor of Prof. Crantz, author of amonograph on the Umbellifere. 
Calyx tube subglobose, margin obsolete; petals obtuse; fruit sub- 
globose, the commissure excavated, with 2 vittze; carpels unequal, 5- 
ribbed, with a vitta in each interval—wSmall, creeping herbs with line- 
ar or filiform, entire leaves. Umbels simple, involucrate. 
C. rinEAtTa. Nutt. (Hydrocotyle. Michz.) 
Iws. cuneate-linear, sessile, obtuse at apex, and with transverse veins, 
shorter than the peduncles——Muddy banks of rivers, Mass.! to La, Stems sev- 
eral inches long, creeping and rooting in the mud. Leaves 1—2’ by 1—2”, 
often linear and appearing like petioles without lamine. Umbels 4—8-flower- 
-ed. Peduncles } longer than the leaves. Involucre 4—6-leaved. Fruit with 
red vitte. May—Jl. 
3. SANICULA. Tourn. 
Lat. sanore, to cure ; on account of the reputed virtues as a vulnerary. 
Flowers 9 3 $3; calyx tube echinate, segments acute, leafy ; pe- 
tals obovate, erect, with a long, inflected point; fruit subglobose, 
armed with hooked prickles; carpels without ribs; vittee nnmerous— 
U Umbel nearly simple. Rays few, with many-flowered, capitate umbel- 
lets. Involucre of few, often cleft leaflets, involucel of several, entire. 
S. Marmanpica. Sanicle. 
Tvs. 5-parted, digitate, mostly radical; /fts. or segments, oblong, incisely 
serrate; sterile fis. pedicellate, fertile sessile; calyx segments entire—In low 
woods, thickets, U. S., and Can.,common. Stem 1—2f high, dichotomously 
branched above, smooth, furrowed. Radical leaves on petioles 6—12/ long, 3- 
arted to the base, with the lateral segments deeply 2-parted. Segments 2—4’ 
ong, 4 as wide, irregularly and mucronately toothed. Cauline leaves few, 
nearly sessile. Involucres 6-leaved, serrate. Umbels often proliferous. Um- 
bellets capitate. Flowers mostly barren, white, sometimes yellowish. Fruit 
densely clothed with hooked bristles. Jn. 
4,.ERYNGIUM. Tourn. 
Gr. epvyety, to belch; a supposed remedy for flatulence. 
Flowers sessile, collected in dense heads; calyx lobes somewhat 
leafy ; petals connivent, oblong, emarginate with a long inflexed 
point; styles filiform ; fruit scaly or tuberculate, obovate, terete, with- 
out vittze or scales— Herbaceous or suffruticose. ls. blue or white, 
bracteate ; lower bracts involucrate, the others smaller and paleaceous. 
1. E. aquaticum. Button Snake-root. 
Iws. broadly linear, parallel-veined, ciliate with remote soft spines ; bracts 
tipped with spines, those of the involucels entire, shorter than the ovate-globose 
heads.—Low grounds on prairies, Ia.! Ill., &e. Aremarkable plant, appearing 
like one of the Endogene. Very glaucous. Stem simple,1—5fhigh. Leaves 
often 1—2f long, 4—13’ wide. Heads pedunculate,i—1/diam. Flowers white, 
inconspicuous. Jl. Aus. 
2. E. Viremntinum. Lam. (E. aquaticum. Michz.) 
Lvs, linear-lanceolate, uncinately serrate, tapering to both ends; invol. of 
7—8 linear leaflets, longer than the heads, 3-cleft or spinose-dentate ; scales tri- 
cuspidate——? Marshes, N. J. to Ohio, Prof. Lock! and La. Stem hollow, 
3—4f high, branched above. Leaves 6—10/ by 5—10”, upper ones much small- 
