Oedeb 10.— composite. 471 



2 H. soabrum Mx. Si. leafy, Boabrous and hispid; tos. elliptic-obovate, scabrous 

 and hirsute, entire or the hwer sligMy dentate ; ped. thick, and with the invol 

 densely glandular-hispid; hds. 40— 50-flowered. — Diy 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 ai; apex, bright red. Aug. 



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

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

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

 glandular-tomontoua or hispid, 20 — 30-flowered, in a small, terminal panicle. — 

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

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



4. H. Gronovii 1. St. leafy, hirsute, paniculate; invol. and pedicels glandular- 

 pilous ; radical Ivs. obovato or oblanoeolate, entire, or denticulate, strigous, (he 

 midvein ieneath very villous; upper ones oblong, closely sessile, ach. 20 to 30, 

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

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

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

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



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

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

 ciliate on the margin, veins colored ; invol. glabrow, about 20-flowered ; a£h. 

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

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

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



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

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

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

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

 times dichotomous. 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 tlie last three species. A thorough 

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



106. CATANAN'CHE, L. (Gr. KaTd, dvdyKri, from necessity ; it 

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

 tacle paleaceous; pappus paleaceous, 5-leavod; pales awned. — (T) Orien- 

 tal herbs, with alternate, lanceolate Ivs. 



C. oceriilea L. Lvs. linear lanceolate, villous, somewhat bipinrratifid at base ; 

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

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

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



107. NAB'ALUS, Cass. Deop Flowbe. (A barbarous name.) In- 

 volucre cylindric, of many linear scales in oue row, calycuiate 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.) 



§ Heads pendulous, glabrous. Leaves variously lobcd or shaped, (a) 



a Dwarf species (6 to 10' Ugh) native of liigb mountains Nos. 1, 2 



a Tall (3 to of bigli).— Hds. 5 to 6-tlowered No. 8 



— lids. 8 to 12-flowcred.— Pappus tawny No. 4 



— Pappus straw colored Nos. 5, 6 



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



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



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



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

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

 invol. 1 to 18-flowered, of 10 to IS obtuse, proper scales calycuiate at the base with 

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



