4:08 ORDER LXVIII. COMPOSIT-E. 



Gen-US LXXXVL— HIERA'CIUM. Tourn. 

 (From hieraoc, a hawk.) 



Involucre imbricate ; receptacle naked ; pappus simple, per- 

 sistent, setaceous. Flowers yellow, solitary or corymbose, 

 perfect. 



1. H. Maria'num, (Willd.) {H. scabrum, Mich.) Stem erect, villous and 

 scabrous, leafy. Leaves sessile, obovate, oblong, strigose, upper leaves 

 small, lower ones denticulate. Flowers in irregular panicles; involucre 

 hispid, tomentose ; florets numerous. — Yellow. 2f. Aug. — Sept. 

 Mountains. 2 — 4 feet. 



2. H. Groxo'vii, (L.) Stem leafy, erect, hairv, with a glandular pu- 

 bescence. Leaves few, near the base of the stem, ovate, sessile, ciliate, 

 pubescent. Flowers \n terminal panicles; involucre cyliudric, covered 

 with hispid glands. /SVec/ oblong, furrowed. — Yellow. If. June — 

 Sept. In dry soils. Common. 



3. H. VENo'suM, (L.) Stem herbaceou?, glabrous toward the summit, 

 hair}'^ at the base. Leaves all radical, ovate-oblong, little hairy on the 

 upper surface, entire, margins ciliate, with dark red veins. Flowers in 

 corymbose panicles ; involucre glabrous. Seed striate, receptacle dot- 

 ted. — Yellow. If. May — June. In shaded soils. 1 — 2 feet. 



Veiny Hawkweed. 



4. H. panicula'tum, (L.) Stem leafy, erect, pubescent beneath, gla> 

 brous above. Leaves lanceolate, denlicuiate, glabrous. Flowers in large 

 compound panicles, on slender peclunclps ; involucre with the interior 

 leaves very narrow, glabrous. Seed furrowed. — Yellow. If. July — 

 Sept Mountains. 



Genus LXXXVII.— NAB'ALUS. Cass. (Frenanthes, L.) 

 (From naila, a harp, alluding to the lyrate leaves.) 



Involucre cylindric, in a single row, somewhat imbricate at 

 the base with a few appressed scales ; receptacle slightly pitted. 

 Florets perfect. Stigmas somewhat liispid, filiform. Fruit nar- 

 row, angled ; pappus pilose, erect, persistent, colored, scabrous. 



1. X. al'bus. (P. serpe7itaria, Pursh.) Stem erect, nearly glabrous. 

 Leaves hastate, radical ones palmate, cauline ones on long petioles, sin 

 uate, pinnatifid, somewhat 3-lobed, middle segment 3-parted, with a 

 long, attenuated base, upper leaves lanceolate. Flowers in terminal, 

 paniculate racemes, nodding ; florets 12 in each capitulum ; involucrum 

 8-cleft. — Purple. 2^. Mountains. Aug. — Oct. Upper district of Car- 

 olina. Rattles7iake-root White Lettuce. Liotis-foot. 



2. N. ALTis'siMus, (Hook.) {Frenanthes altissima, L.) Stem erect, 

 branching, glabrous. Leaves 3-lobed, alternate, angled, nearly liastate, 

 plightly dentate, scabrous on the mai'gin. Flowers in axillary racemes, 

 nodding ; involucre about 5-flowered, cylindrical. Seeds angular, stri- 

 ate. — Yellow. If. Aug. — Sept. 4 — 6 feet. 



.3. N. Fra'seri, (D. C.) (Frenanthes alba, Ell.) Stem herbaceous, 

 much branched, pubescent, slightly angled; radical leaves hastate, an- 

 gled, toothed; upper leaves spatulate, obovate-lanceolate, toothed and 

 engled. Flowers in loose panicles, in terminal clusters, nodding ; florets 

 8 — 12 in a capitulum; involucrum with 8 oblong puh-scent leaves 



