Gnaphalidm. composite. 427 



California, Chamisso, Douglas! Nuttall ! &c. April-May.— (l) iVu«. 

 Perhaps too near the preceding. 



4. G. Sprermeiii (Hook. & Am.) : herbaceous; leaves clothed with white 

 wool on both sides ; the lower spatulate, the upper linear ; those of the branches 

 somewhat decurrent ; corymbs axillary and terminal, glomerate, peduncu- 

 late, of few heads ; scales of the silvery and slightly brownish involucre ob- 

 long, scarcely acute, shining. — Hook. ^ Am. hot. Beechey, p. 150. G. Chi- 

 lense, Spreng. syst. 3. p. 480 ; Less, in Linneea, 6. p. 525. G. decurrens ^. 

 Hook. ! fl. Bor.-Am. 1. p. 328. G. luleo-album 0. occidentale, Nutt. .' in 

 trans. Amer. phil. soc. I. c. 



(3. smaller ; heads in a simple capitate cluster. — G. luteo-album, Hook. .' 

 Ji. Bor.-Am. I. c. . r 



California! and Oregon! apparently common. Q — Near G. Vira-vira of 

 Chili. We know not how to distinguish the smaller states of this species 

 from G. luteo-album, except that the heads are larger, and the achenia per- 

 fectly smooth under a lens, instead of minutely tuberculale. The involucre is 

 often slightly yellowish. 



♦ • Leaves not decurrent : scales of the involucre never ycUow : heads corymbose-clustered. 



5. G. polycephalu7n (Michx.) : erect; leaves linear-oblanceolate, tapering 

 at the base, with undulate margins, mucronate-acute, nearly glabrous or 

 pubescent-scabrous above, wooUy-tomentose beneath, as well as the stem ; 

 heads clustered at the extremity of the paniculate-corymbose branches, ovate- 

 conical before expansion, then obovate ; scales of the scarious ochroleucous 

 involucre ovate and oblong, rather obtuse ; perfect flowers few. — Miclix. ! fl. 

 2. p. 127 ; Pursh, fi. 2. p. 584 ; Ell. sk. 2. p. 325 ; Hook. ! fl. Bor.-Am. 1. p. 

 328 ; Darlingt. ! fl. Cest. p. 494 ; DC. ! prodr. 6. p. 227. G. obtusifolium, 

 Linn. spec. ed. 2. p. 1198 (pi. Gronov..'); Willd. ! spec. 3. p. 1880. G. 

 conoideum, Lam. diet. 2. p. lib. 



(3. stem villous-pubescent with viscid hairs ; leaves varying from lanceo- 

 late to narrowly oblong. 



Old fields and woods, Canada ! to Louisiana ! and Texas ! common. 

 Aug.-Sept.— (1) Plant fragrant, 1-2 feet high. 



6. G. uliginosum (Linn.) : low, woolly, diffusely branched ; leaves lan- 

 ceolate-linear, tapering at the base, tomentose on both sides, especially the 

 uppermost; heads in terminal and sessile capitate clusters, subtended by 

 leaves; scales of the involucre oblong, rather obtuse, scarious, often brown- 

 ish; achenia smooth.— Linn. spec. 2. p. 856 ; Fl. Dan. t. 859; Engl. hot. t. 

 1194 ,• Michx. ! fl. 2. p. 127 ; Pursh, I. c. ; Hook. ! fl. Bor.-Am. 1. p. 329 ; 

 Darlingt. ! I. c. ; DC. ! prodr. 6. p. 230. 



/3. achenia minutely hispid-scabrous. — G. pilulare, Wahl. fl. Lapp. p. 

 205, t. 13 ? {Less, in Linnrea, 6. p. 525.) 



Common in low grounds throughout the Northern, Middle, and Western 

 States! and Newfoundland! Canada! Saskatchawan ! Oregon! and Cali- 

 fornia. July-Sept.— ® Plant 4-6 inches high.— The forms with smooth 

 and scabrous achenia appear to be equally abundant, and are undistinguish- 

 able, except by this character. The latter also occurs in Siberia, fide Ledeb. 

 fl. Alt. 4. p. 57. — Marsh Cudweed. 



7. G. palustre (Nutt.) : low, very woolly; stem erect, branching; leaves 

 spatulate-oblong or nearly linear, acute, tomentose both sides ; heads crowded 

 in terminal capitate very woolly clusters, which are leafy at the base; scales 

 of the involucre whitish or brownish, scarious, linear, obtuse; achenia very 

 minutely scabrous. — Nutt.! in trans. Ainer.phil. soc. I.e. p. 403. 



/3. achenia perfectly smooth and glabrous. 



