428 COMPOSITiE. Gnaphalium. 



Rocky Mountains, Oregon, California (and Chili), Nuttall ! /3. Sweet 

 Water of the Upper Platte, Lieut. Fremont! — (l) Plant varying from an 

 inch to a span high; allied to G. uliginosum. 



8. G. gossypinum (Nutt.) : white and floccosely woolly ; stem nearly 

 simple? erect; radical leaves spatulate-lanceolate, acute; the cauline 

 crowded, linear, acuminate, sessile, narrower towards the base ; heads con- 

 glomerate, sessile, terminal ; scales of the ovate involucre yellowish, oval or 

 oval-oblong, obtuse. Nutt. in trans. Amer. phil. soc. I. c. p. 404. 



Shores of the Pacific near the mouth of the Oregon; rare, Nuttall. — (l) 

 Plant 12-18 inches high, heavy scented, with the appearance of Helichry- 

 sum graveolens, somewhat glandular beneath the copious pubescence. Nutt. 



9. G. microcephalum (Nutt.) : suffruticose ? white and densely woolly ; 

 stem erect, simple ; leaves lanceolate, apiculate, sessile, narrower towards 

 the base, nearly all similar ; heads ovate, conglomerate in a short spike ; 

 scales of the involucre scarious, white and silvery, acute. Nutt. in trans. 

 Amer. phil. soc. I. c. p. 404. 



St. Diego, California: rare. — About a foot high. Leaves 1-li inch 

 long, 2-3 lines wide, white on both sides, with a blackish apiculate point. 

 Involucre very floccose at the base : perfect flowers about 5. — Allied appar- 

 ently to G. lanuginosum ; but strongly resembling some species from the 

 Cape of Good Hope. Nuttall. 



• • * Leaves not dccurrent : scales of the involucre never yellow : heads racemose- 

 spicate. 



10. G. purpureum (Linn.) : stems mostly simple or branched from the 

 base, erect or ascending, tomentose ; leaves oblong-spatulate or oblanceolate, 

 mostly obtuse, mucronate, tapering to the base, somewhat arenose-woolly, 

 but green above, densely tomentose and canescent beneath ; heads in sessile 

 clusters in the axils of the upper leaves, and spicate at the summit of the 

 stem ; scales of the involucre lanceolate-oblong, scarious, tawny or whitish, 

 the inner often marked with purple; achenia minutely scabrous. — Linn.! 

 spec. 2. p. 854 (ex syn. Gronov. ! S; Dill. Elth. t. 109) ; Michx. ! fi. 2. p. 

 127 ; Ell. sk. 2. p. 325 ,• Darlingt. ! fl. Cest. p. 492 ; DC. ! prodr. 6. p. 

 232. G. spathulatum. Lam. diet. p. 758. G. Americanum, Willd. spec. 3. 

 p. 1887 (excl. syn. Swartz. S^c. ) ; Pursh, fl. 2. p. 525. G. Pennsylvani- 

 cum, mild. cnum. p. 867 ; DC. ! I. c. G. hyemale, Walt. Car. p. 203.— 

 Varies, with the clusters more spicate, and the pubescence closely appressed 

 and silvery. G. spicatum {Lam. I.e.?) DC! I.e. in part; Nutt. in trans 

 Amer. phil. soc. I. c. 



(3. ? falcatam : leaves nearly e(|ually woolly on both sides, narrowly ob- 

 lanceolate ; the upper nearly linear. — G. falcatum, Lam. I. c. 1 DC. I. c. 

 G. Americanum /?., Hook. ! compan. to hot. mag. 1. ]?. 96. 



Sandy or gravelly soil, from the coast of New Hampshire ! to Louisiana ! 

 and CaViforma, ex Nuttall. (3. Louisiana! and Texas! July-Sept., or in 

 the Southern States, March to June. — Root apparently annual, at least in the 

 northern plant ; but described as perennial by Muhlenberg, Elliott, Dar- 

 lino-ton, &c.; which appears to be the case in some southern forms of this 

 variable species. Stem 6-20 inches high, slender. All the species of this 

 subdivision are ill defined. 



11. G. nstulatum (Nutt.) : perennial, herbaceous, erect, canescently tomen- 

 tose; stem simple, terete, floccose-pubescent; leaves oblong-spatulate, ob- 

 tuse, mucronulate; the upper ones narrower, sessile (not decurrent); heads 

 oblong, aggregated in the axils of the upper leaves into a continuous short 

 and dense oblong spike ; scales of the involucre lanceolate and linear, acute, 

 brownish towards the points. Nutt. in trans. Amer. phil. soc. I. c. p. 405. 



