OaDEB 70.— OOMPOSITA 471 



2 H. soabrum Mx. St leafy, scabrous and hispid ; te. elliptic-obovate, scabrona 

 and hirsute, entire or (he lower slightly dentate ; ped. thiclc, and with the inwl 

 densely glandular-hispid; hds. 40 — 50-flowered. — 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. longipilum Torr. Plant densely pilous with long, straight, ascending, bristig ■ 

 hairs ; st. strict, simple, smoothish and nearly leafless above ; Its. crowded on 

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

 glaudular-tomentous or hispid, 20 — 30-flowered, in a small, terminal panicle. — 

 Barrens and prairies, W. Slates. Plant 1 — 2f high, remarkable for tlie long (6") 

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



4. H. Gronovii L. St. leafy, hirsute, paniculate; invol. and pedicels glandular- 

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

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

 contracted above. — Dry hills. Can. and TJ. S. Stem 1 to 31; furnished with a few 

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

 tapering into a long stalk. Mowers yellow, on glandvUar, slender pedicels. Ache- 

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



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

 Ivs. obovate, somewhat acute, entire, a little hairy above, nearly glabrous beneath, 

 eiliate on the margin, veins colored ; invol. glabrous, about 20-flortered ; ach. 

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

 slender. Panicle diffuse, several times dichotomous, corymbous. Heads rather 

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



6 H. panioulatum L. St. slender, leafy, diffusely paniculate, whitish pubescent 

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

 tectli, or entire panicle diffuse; ped. very slender; hds. 10 — Ifi-flowered. — A 

 smooth, slender plant, in damp woods. Can. to Ga. Stem 1 — 3f high, several 

 times dichotomous. Leaves thin, 2 — i' long. Heads small, numerous, with yel- 

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

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

 revision of the genus wUl probably reduce them to one, viz., H. Gronovii. 



106. CATANAN'CHE, L. (Gr. koto, dvdyKTj, from necessity ; it 

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

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

 tal herbs, witb alternate, lanceolate Ivs. 



C. ccerCilea L. Lvs. linear lanceolate, villous, somewhat bipinnatifld at base; 

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

 annua], 2 to 3f high. Hds. solitary, on long peduncles, with blue spreading, 

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



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

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

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

 capillary, brownish, 2-rowed, 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.) 



g Heads pendulous, glabrous. Leaves variously lobed or shaped, (a) 



a Dwarf species (6 to 10' high) nati ve of high mountains Nos. 1, 3 



a Tall (3 to Sf high).— lids. 5 to 6-flow6red No, 8 



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



— Pappus straw colored N os. 5, 6 



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



b Heads about 12-flowered. Pappus straw-color Nos. 7, 8 



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



i H". Boottii DC. St. simple, dwarf; lower lvs. subcordate or hastate-cordate, ob- 

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

 itwol. 10 to 18-flowered, of 10 to 15 obtuse, proper scales calyculate at the base with 

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



