ORDER LXVIII. — COMPOSURE. 409 



fringed at the summit. Seeds cylindrical, striate ; pappus 7, scabrous. — 

 Pale yellow. %. Sept. — Oct. Dry soils. 2 ft. Gall of the earth. 

 4. N. barba'tus, (T. &. G.) (P. crepidinea, Ell.) Stem branching to- 

 ward the summit. Leaves broad-lanceolate, attenuate at the base, up- 

 per ones sessile, denticulate, scabrous. Flov:ers in terminal panicles, 

 composed of nodding clusters; involucrum with 8 — 10 nearlv glabrous 

 leaves; florets numerous; pappus scabrous. — If. Sept. Mountains. 

 4—6 feet. 



0. N. tirga'tus, (D. C.) {P. virgata, Mich.) Stem erect, simple, gla- 

 brous. Leaves sessile, runcinate, somewhat amplexicaul, upper leaves 

 narrow-lanceolate. Flowers in long terminal racemes, pendulous, 10 — 

 12 florets in a capitulum ; involucrum with 8 oblong, obtuse leaves, 

 fringed at the summit. S^eds cylindric, striate ; pappus scabrous. — 

 Pale purple, y. Oct. Pine-barrens. Common. 



6. N". corda'tus, (Hook.) Stejn erect, generally glabrous. Leaves 

 ovate-lanceolate, petioled, cordate at the base, irregularly toothed, cil- 

 iate, upper leaves lanceolate. Flowers in racemose panicles, nodding, 

 6 — 8 flowers in a head; leaves of the involucrum usually 8, with mem- 

 branaceous margins. Seeds striate, with scabrous pappus. — Yellow. 

 2f . July — Aug. Mountains. 4 — 6 feet. 



7. N. peltoi'deus, (Hook.) Stem simple, slender. Leaves on long 

 petioles, deltoid, acuminate, acutely denticulate, lower ones triangular, 

 glabrous, slightly glaucous beneath. Floioers in axillary racemes, 5 in 

 each capitulum ; involucrum with 5 equal linear leaves, with membra- 

 naceous margin. Seeds glabrous, angled ; pappus hairy. — Purple. If 

 Sept. Mountains. 2 feet. 



Genus LXXXVHI.— LYGODES'MIA. Don. 

 (From lugodes, pliant, and 7nia, one, the allusion not apparent.) 



Heads 5 — 10-flowered. Florets in 1 or 2 series. Involucre 

 5-leaved, cylindrical, elongated, with a few scales at the base. 

 Achenia linear, compressed, sulcate. Pappus abundant, pilose, 

 colored, scabrous. Herbaceous plants, glabrous, and somewhat 

 glaucous, with linear, subulate, entire leaves. 



1. L. aphyl'la, (D. C.) Stem slender, angled, dichotomously divided 

 at the summit. Leaves radical, linear, filiform, minute bracts at the 

 origin of the branches. Heads showy, involucre cylindrical. Achenia 

 long, slender. — Rose-color. Pine-barrens. Geo., Flor. 1 — 2 feet. 



Genus LXXXIX.— TARAX'ACUM. Haller. {Leontodou, L.) 

 (From tarasso, to disorder.) 



Involucre imbricate, with a few loose scales at the base ; flo- 

 rets perfect ; receptacle naked ; pappus stiped. 



J. T. DENS-LiOMS, (Dis.) {L. taraxacum, L.) Scapes several from each 

 root, terete, glabrous, each 1-flowered. Leaves all radical, runcinate, 

 oblong ; segments lanceolate, toothed, slightly hairy wiien young ; in- 

 volucrum with numerous leaves, equal, sometimes colored; scaK-s re- 

 flexed. Seeds oblong, angled; pappus stipitate, hairy ; recptaole con- 

 vex.— Yellow If. March — April. Damp soils. Introduced. 



f)atuh-/i<>n. 



IS 



