COMPOSiTAE (COMPOSITE FAMILY) 



8G9 



1. A. cuspidata (Pursb) Steud. Scape 3 dm. high, 

 from a thickened caudex ; leaves lan- 

 ceolate, elongated, tapering to a sharp 

 point, entire, woolly on the margins ; 

 bracts of the involucre lanceolate, sharp- 

 pointed ; achene beakless. (Troximon 

 Pursh; Nothocalais Greene.)- — Prairies, 

 Wise, and n. 111., westw. and north- 

 westw. Apr., ^lay. Fig. 1029. 



2. A. glaiica (Pursh) Steud. Scape 

 3-6 dm. high ; leaves linear to lanceo- 

 late, entire to dentate or laciniate ; head 

 often pubescent or villous ; achene long- 

 beakecl {Troximon Pursh.) — Minn. 1030. A. glauca. 



to the Saskatchewan, southw. and westw. Pig. 1030. Achene x ii^. 



1029. A. cuspidata. 

 Head x %. 

 Achene x 1%. 



1031. P. carohnianus. 

 Head x %. Achene x 1%. 



103. PYRRHOPAPPUS DC. False Dandelion 



Heads, etc., nearly as in Taraxacum, but the soft 

 pappus reddish or rust-color, and surrounded at base 

 by a soft-villous ring. — Mostly annual or biennial 

 herbs, scapose or often branching and leafy below. 

 Heads solitary, terminal. Flowers deep yellow. (Name 

 composed of Truppos, flame-colored, and Tra-mros, pappus.) 

 SiTiLiAS Raf . 



1. P. carolinianus (Walt.) DC. Annual or bien- 

 nial, branching, 1-9 dm. high ; leaves oblong or lanceo- 

 late, entire, cut or pinnatifid, the stem-leaves partly 

 clasping. (Sitilias Raf.) — Sandy fields, Del. to Mo., 

 Kan., and southw. Apr.-July. Fig. 1031. 



104. CREPIS L. Hawk's Beard 



Involucre few-many-flowered, commonly of a single row of equal bracts often 

 becoming thickened at base. Pappus copious, white, soft. — Annuals or bien- 

 nials, not pilose. Otherwise as Hieracium. (The Greek name of some plant, 

 from Kprjiris, a sandal.) 



* Involucre glabrous. 



1. C. PULCHRA L. Annual, 0.3-1.5 m. high, pubescent below, leafy near 

 the base ; leaves pubescent, oblong or oblong-lanceolate, runcinate-dentate, the 

 lower on margined petioles, the upper somewhat clasping ; heads in a loose 

 naked panicle; involucre 1 cm. high. — Locally established in Va. (Adv. 

 from Eu.) 



* * Involucre pubescent. 



•*- Perennial ; scapose or nearly so. 



2. C. runcinata (James) T. & G. Stem 3-9 m. high, glabrous or somewhat 

 glandular-hispid ; leaves rosulate, obovate-oblong or oblong-spatulate. repand or 

 runcinate-dentate, glabrous or slightly hispidulous ; heads loosely corymbose, 

 2 cm. broad ; involucre hirsute, 1 cm. or so high. — On saline soil, Man. to la.^ 

 and westw. June, July. 



■t- -t- Annuals or biennials ; steins leafy. 



3. C. capillXris (L.) Wallr. Ascending, 3-n dm. high; 

 leaves lance-spatulate, laciniate-pinnatifid or merely dentate, 

 the cauline with sagittate-auriculate bases ; heads small, invo- 

 lucre 6-7 mm. hish ; arhenes sjnooth. \0-nerved, slightly nar- 

 roioed at both ends. (C. virens L.) —Fields and waste places, 

 becoming frequent. (Adv. from Eu.) Fig. 1032. 



T 



1032. C. capillarls. 

 Achene x 1%. 



