Gnaphalium. COMPOSITiE. 397 



3. Gnaphalium uliginosum, Linn. Marsh Cudweed. 



Stem diffusely branched, woolly ; leaves lanceolate-linear, tapering at the base, woolly on 

 both sides ; heads in dense terminal capitate and sessile clusters, leafy at the base ; scales of 

 the involucre oblong-lanceolate, rather acute, scarious. — Linn. sp. 2. p. 856 ; Engl. hot. 

 t. 1194; MicJix.fl. 2. p. 197; Pursh, Jl. 2. p. 584; Hook. Jl. Bor.-Am. \.p. 329; Bigel. 

 fl. Bost. p. 301 ; Beck, hot. p. 178 ; Darlingt.Jl. Cest. p. 493 ; DC. prodr. 6. p. 230 ; Torr. 

 4- Gr. fl. N. Am. 2. p. 427. 



Annual. Stem 3-8 inches high, often very much branched from the base. Leaves about 

 an inch long ; those near the summit of the branches crowded about the heads, and very 

 woolly. Heads few in a cluster. Scales of the involucre yellowish-tawny. Achenia smooth. 



Low grounds, ditches, etc. ; very common. July — September. A homely little weed. 



4. Gnaphalium purpureum, Linn. Purple Cudweed. 



Stem erect, simple, tomentose ; leaves oblong-spatulate, tapering at the base, mostly obtuse, 

 densely tomentose and whitish underneath ; heads of flowers clustered in the axils of the upper 

 leaves, and spiked at the summit ; scales of the involucre lanceolate-oblong, the inner ones 

 purplish. — Linn. sp. 2. p. 854 ; Micfix. fl. 2. p. 127 ; Ell. sk. 2. p. 325 ; Pursh, fl. 2. 

 p. 525 ; Beck, bat. p. 179 ; Darlingt. fl. Cest. p. 492 ; DC. prodr. 6. p. 232 ; Torr. ^ Gr. 

 fl. N. Am. 2. p. 428. G. spathulatum. Lam. diet. 2. p. 758. G. Americanum, Willd. sp. 3. 

 p. 1887 ; Pursh, I. c; not oi Mill. G. Pennsylvanicum, Willd. enum. ; DC. I. c p. 235. 



Root annual. Stem 8-15 inches high, slender, clothed with a loose whitish wool. Leaves 

 about an inch long, pale green above ; the radical 3-4 lines wide, the cauline narrower. 

 Heads 3 lines long, forming an interrupted spike. Outer scales of the involucre usually tawny 

 or whitish, sometimes purplish, woolly at the base. Flowers pale purple. Achenia roughish. 



Dry open woods and in sandy fields ; rather common. July - September. G. spicatum, 

 Lam. is probably not distinct from this species. 



36. ANTENNARIA. GcBrt. ; R. Br. in Linn, trans. 12. p. 122. antennabia. 



Species of Gnaphalium, lAnn. &c, 

 [ Named in allusion to the bristles of the pappns, which resemble the antenna of some insects.] 



Heads many-flowered, dioecious ; the corolla tubular, 5-toothed, in the pistillate flowera 

 filiform. Scales of the involucre imbricated, scarious, colored. Receptacle convex, alveo- 

 late. Style in the fertile flowers 2-cleft ; in the staminate simple or nearly so. Achenium 

 nearly terete. Pappus in a single series ; in the pistillate capillary, in the staminate clavate. 

 — Perennial tomentose-canescent herbs, with alternate entire leaves and corymbose hea*** 

 Involucre mostly white, sometimes rose-color or brownish, but never yellow. 



