378 Obdee 63.— UMBELLIFBE^. 



2. CRANT'ZIA, Nutt. {To Prof. Crantz, author of a monograpli of 

 the Umbelliferae.) Calyx tube subglobous, margin obsolete ; petals ob- 

 tuse ; fruit subglobous, the commissure excavated, with 2 vittas ; car- 

 pels unequal, S-ribbed, with a vitta in each interval. — Small, creeping 

 herbs, with linear or filiform, entire Ivs. Umbels simple, involucrate. 

 C. lineata Nutt. Lvs. ouneate-linear, sessile, obtuse at apex, and with trans- 

 verse veins, shorter than the peduncles. — % Muddy bants of rivers, Mass. to La. 

 Sts. several inches long, creeping and rooting in the mud. Lvs. 1 to 2' by 1 to 

 2", oflen linear and appearing like petioles without laminae. Umbels 4 to 8-flow- 

 ered. Fed. | longer than the leaves. Involucre 4 to 6-leaved. Fr. with red 

 vittffi. May — Jl. (Hydrocotyle Mx.) 



3. SANIC'ULA, Tourn. Saniclb. (Lat. sanare, to cure; for its 

 reputed virtues as a vulnerary.) Flowers ¥ ^ J ; calyx tube echinate, 

 segments acute, leafy ; petals obovate, erect, with a long, inflected 

 point ; fruit subglobous, armed with hooked prickles ; carpels without 

 ribs; vittse numerous. — U Umbel nearly simple. Rays few, with 

 many-flowered, capitate umbellets. Involucre of few, often cleft leaf- 

 lets, involucel of several entire. 



1 S. Maril^ndica L. Lvs. 5 to 7-parted, digitate, mostly radical ; Ifls. or seg- 

 ments oblong, incisely serrate ; sterile fls. many, pedicellate, fertile ones sessile ; 

 cal. segm. entire ; sty. slender, conspicuous, recwved. — Thickets, U. S. and Can., 

 common. St. 1 to 2f high, dichotomously branched above, smooth, furrowed. 

 Radical lvs. on petioles 6 to 12' long, 3-parted to the base, with the lateral segm. 

 deeply 2-parted ; segm. 2 to 4' long. Cauline lvs. few, nearly sessile. Involucres 

 6-leaved, serrate. Umbels often proliferous. 



2 S. Canadensis L. Lower lvs. 5-parted, upper 3-parted, segm. ovate, muoro- 

 nate-serrate ; sterile fls. few, rrmcli shorter than the fertile ; sty. shorter than ihi 

 prickles. — Woods, thickets, N. States to 0. and Can., common. About the size 

 of the preceding, or taller. Umbels more numerous and smaller. Lfts. thin, 1 

 to 3' long. Jn. — Aug. 



4. ERYN'GlUffl, Tourn. (Gr. i^vyelv, to belch ; a supposed remedy 

 for flatulence.) Fls. sessile, collected in dense heads ; cal. lobes some- 

 what leafy ; petals connivent, oblong, emarginate with a long, inflexed 

 point ; styles filiform ; fruit scaly or tuberculate, obovate, terete, without 

 vittse or scales. — Herbaceous or sufi"ruticous. Fls. blue or white, bracte- 

 ate ; lower bracts involucrate, the others smaller and paleaceoiis. 



§ Scales or clmff of the heads entire Nos. 1—3 



§ Scales or chafif of the heads tricuspidate Nos. 4—7 



1 E. yuooaefolium Mx. Erect; lvs. broadly linear, paraUel-veined, cUiate with 

 remote soft spines ; bracts tipped with spines, those of the involucelS entire, shorter 

 than the ovate-globous heads. — 2f Prairies and Pine barrens, W. and S. A re- 

 markable plant appearing like one of the Bndogenaa. Very glaucous. St. Simple. 

 1 to 5f high. Lvs. often 1 to 2f long, ^ to 1 J' wide. Heads pedunculate, i to 

 1' diam. Hs. white, inconspicuous. Jl., Aug. (This name, if allowable as Dr. 

 Gray suggests, is more appropriate than B. aquaticum L. in part.) 



2 E. prostritum Baldw? Sts. filiform, prostraie, rooting at the joints; lvs. 

 (small) of two forma in tlie same cluster, some ovate, dentate, petiolate, others 

 Z-cleft with lanceolate segments, middle segm. largest ; heads on slender peduncles, 

 axillary, small, ovate; involucre Iracts 4 to 6, linear, rather longer than the head; 

 scales entire, shorter than the fls. — % In wet places, Ga. and Pla. (Mettauer). 

 St. 6 to 12' long, many from one root. Lvs. 4 to 1" long. Hds. 3" long, white, 

 the fls. blue. Jn.— Oct. (E. gracile BU.) 



p. FOLidsuM. Lvs. larger, all 3-clefl;, irregularly toothed ; bracts of the invoL 

 leafy, twice longer than the oblong heads. — La. (Hale). (E. prostratum 

 ■ Nutt.) 



3 E. Baldwfnii Spreng. Sts. fiUform, prostrate, clustered ; lowest lvs. oblong, 



