Ordeb 70.— COMPOSITES. 47l 



2 H. scabrurn Mx St. loafy, scabrous and hispid ; Ivs. elliptic-obovate, scabrous 

 and hirsute, entire or the lower slightly dentate; ped. thick, and with the invoL 

 densely glandular-hispid; hds., 40-— 50-fiowered. — Dry hills, borders of woods, 

 Can. to Car. and Ky. Stem 1 — 3f high, round, striate, rather stout. Lower 

 leaves petiolate, upper sessile, subacute, often purplish as well as the stem. 

 Heads large, with yellow flowers. Achenia obtuse at apex, bright red. Aug. 



3 H. longipilttrn Torr. Plant densely pilous with long, straight, ascending, bristly 

 hairs ; st. strict, simple, smoothisli and nearly leafless above ; lvs. crowded on 

 the lower part of the stem, oblong-lanceolate, attenuated at the base, entire ; hds. 

 glandular-tomentous or hispid, 20 — 30-ilowerc-d, in a small, terminal panicle. — 

 Barrens and prairies, W. States. Plant 1 — 2f high, remarkable lor the long (6") 

 brownish hairs with which the lower part is thickly clothed. July — Sept. 



4. H. Grono^ui L. Si. leafy, hirsute, paniculate; invol. and pedicels glandular- 

 pilous ; radical lvs. obovato or oblanceolate, entire, or denticulate, strigous, the 

 midvein beneath vary villous; upper ones oblong, closely sessile, ach. 20 to 30, 

 contracted above. — Dry hills, Can. and U. S. Stem 1 to 3f, furnished with a few 

 leaves below, naked above and bearing a narrow, elongated panicle. Lower leaves 

 tapering into a long stalk. Flowers yellow, on glandular, slender pedicels. Ache- 

 nia tapering upwards from the middle, but not rostrate. Aug., Sept. 



5 H. vendsnm L. Scape or st. naked or with a single leaf, smooth, paniculate; 

 lvs. obovate, somewhat acute, entire, a little hairy above, Dearly glabrous beneath, 

 eiliatc on the margin, veins colored ; invol. glabrous, about 2Qgflowered ; ach. 

 linear. — In woods, &c, N-. Eng. to W. States. Stem 1 — 2f high., dark brown, 

 slender. Paniolo diffuse, several times dichotomons, -corymbous. Heads rather 

 small, on slender pedicels, with bright yellow flowers. Jl., Aug. 



6 H. panic/ulatum L. St slender, leafy, diffusely paniculate, whitish pubescent 

 below ; lvs. lanceolate, glabrous, membranaceous, acute, with remote spreading 

 teeth, or entire panicle diffuse; ped. very slender; hds. 10 — 20-floivered. — A 

 smooth, slender plant, in damp woods, Can. to Ga. Stem 1 — of high, several 

 times dicliotomous. Leaves thin, 2 — 4' long. Heads small, numerous, with yel- 

 low flowers. Pedicels long and filiform, forming a very diffuse panicle. Aug. — 

 It is not easy to determine the exact limits of the last three species. A thorough 

 revision of the genus will probably reduce them to one, viz., II. Gronovii. 



106. CATANAN'CHE, L. (Gr. Kara, dvdyicr], from necessity ; it 

 must necessarily be admired ?) Involucre imbricated, scarious ; recep- 

 tacle paleaceous ; pappus paleaceous, 5-leaved ; pales awned. — 0) Orien- 

 tal berbs, witb alter:) ate, lanceolate lvs. 



C. ccerulea L. Lvs. linear lanceolate, villous, somewhat bipinnatind at base ; 

 lower scales of the involucre ovate, mucronate. — From S. Europe. A handsome- 

 annual, 2 to 3f high. lids, solitary, on long peduncles, with blue spreading, 

 ligulate corollas toothed at apex. Jl. — Sept. f 



i07. NAB'ALUS, Cass. Drop Flower. (A barbarous name.) In- 

 volucre cylindric, of many linear scales in one row, calyculate with a 

 few short, apprcssed scales at base ; receptacle naked ; pappus copious, 

 capillary, brownish, 2-rowcd, persistent ; achenia not beaked, smooth, 

 striate. — Erect herbs with a thick, tuberous, bitter root. Hds. 5 to 18, 

 flowered, not yellow, although often straw-colored. (Prenanthes L.) 



§ Ileitis pendulous, glabrous. Leaves variously lobed or shaped, (a) 



a Dwarf .species (0 to 10' hitrii) native of high mountains Nos. 1, 2 



a Tall (2 to 5f high).— Hds. 5 to 6-liowered No. 8 



— Hds. 8 to 12-ilowercd. — Pappus tawny No. 4 



— Pappus straw colored Nos. 5, (J 



§ Heads nodding or erect, hairy. Leaves mostly undivided, (b) 



b Heads about 12-flowered. Pappus straw-color , Nos. 7, S 



b Heads about 25-flowered. Pappus tawny or dusky No. 9 



1 N. Boottii DC. St. simple, dwarf; lower lvs. subcordale or hastate-cordate, ob- 

 tuse, the middle oblong, the upper lanceolate, mostly entire ; hds. nodding, racemed; 

 invol. 1 to 18-flowored, of 10 to 1 5 obtuse, proper scaks calyculate at the base with 

 lax linear scales half their length; pappus straw-color. — White Mts., N. H., and 



