﻿COMPOSITE. 



160. FILAGO. Tourn. inst. t. 259; Gtertn.fr. t. 166 ; DC. I. c. p. 217. 



Heads many-flowered, heterogamous; the central flowers tubular, 4-5- 

 toothed, ■ perfect, but often infertile; the others pistillate, filiform. Scales 

 of the involucre few, mostly woolly. Receptacle columnar or turbinate, 



flowers, chaffy at the margin or base ; the searious chaff resembling the pro- 

 per scales of the involucre, each bearing in its axil a pistillate flower. Ache- 

 nia nearly terete, smooth or minutely papillose. Pappus of the central 

 flowers capillary ; of the exterior caducous or none.— Annual tomentose herbs, 

 usually branched ; with alternate entire leaves, and small mostly glomerate 

 or fascicled heads. 



upper branches arising from the capitate sessile glomerules; leaves lancui- 

 late, acute, erect, crowded; heads pyramidal; inyolucral scales and cliafj 



series, destitute of pappus.— Linn. spec. ed. 2, p. 1311 ; DC. ! prodr. 6. 

 247. F. vulgaris, Lam. Gnaphalium Germanicum, Linn. spec. {ed-^V- 

 p. 857 Fl. Dan. p. 997 ; Pursh, Ji. 2. p. 526 ; Darlingt.! ft. Cest. 493. 

 Gifola vulgaris, Cass, in diet. sci. nat. Impia Germanica, Bluff ij- ting- 

 fi. Germ. 2. p. 342. 



Old fields and roadsides. New York ! to Virginia ! introduced from Europe. 

 July-Oct. — A span high. Heads aggregated in globose capitate clusters.— 

 Herha Impia. Cudweed. 



2. F. Californica (Nutt.) : arachnoid-tomentose, paniculatejy ^'^^^^'^^ 



all obtuse ; the exterior strongly boat-shaped and very wool!} 

 of the central somewhat copious.— iVM«. / in trans. Amer. phil. soc. («• ser-) 

 leaves and glomerules more crowded; chaff 

 Nuttall!—k span high. Heads larger and ino« 



urplish. 



glomerate than in F. minima (F. 

 arvensis. Achenia papillose-scabrous. 



3. F. parvula: canescently woolly; stem erect, simple, or slightly 

 branched at the summit ; leaves linear-lanceolate, cuspidate ; heads ovaie- 

 conical, acute, somewhat clustered ; in volucral scales and chaff ovate, ac"Usn ■ 

 the exterior boat-shaped and very woolly ; the ijnermost searious, oblon.^ 



''i^r^^^^^^s^x v 



heshigh. Leaves 



small, tipped with a blackish conspicuous acuminate-cuspidate Poi°' = Z^'^! 

 uppermost linear-oblong and merely mucronulate. Achenia g'an'^"^,.,,,, 

 puberukn^. Pappus scabrous — Although overli 



the axils of all the chaffy i 



