948 CARDUACEAE 



3. E. integrifolium (Hook.) Greene. Stems niunerous, decumbent at the 

 base, 1-3 dm high, finely tomentose: leaves linear-oblanceolate, closely tomen- 

 tose, 2-5 cm. long, entire or somewhat 3-lobed; involucres 6-8 mm. high and 

 broad; bracts 8-10, elUptic, mostly obtuse; ligules orange, 7-10 mm. long; 

 achenes hispidulous or slightly glandular above and on the margins. E. caespi- 

 tosum intcgrifoUinn A. Gray. Hills and mountain sides: Mont. — Wyo. — Ore. — 

 Wash. Plain — Suhnwnt. Je-Jl. 



4. E. multiflorum (Nutt.) Rydb. Stem rather stout, 3-4 dm. high, loosely 

 floccose; leaves pinnatifid, with lanceolate acute divisions, floccose; involucres 

 fully 1 cm. high and 1.5 cm. broad; bracts oblanceolate, acuminate; Mgules about 

 1 cm. long, glabrous. Dry places: Ore. — Mont. 



5. E. lanatum (Pursh) Forbes. Stem 3-5 dm. high, loosely floccose; leaves 

 more or less deeply pinnatifid, with oblong or linear, mostly obtuse divisions, 

 loosely floccose; involucres fully 1 cm. high, usually over 15 mm. broad; bracts 

 10-14, oblong-lanceolate, acute or obtuse; Hgules l6-l5 mm. long, orange. Hill- 

 sides and gravelly soil: B.C. — Ida. — Calif. Submont. My-Jl. 



6. E. Watsoni A. Gray. Stem 1-1.5 dm. high, white-tomentose, simple or 

 slightly branched; lower leaves cimeate-oblanceolate, about 1 cm. long, 3-5- 

 toothed at the apex, white-tomentose beneath, floccose above; stem-leaves 

 mostly pinnatifid, with linear divisions, 1-2 cm. long, revolute-margined ; invo- 

 lucre hemispheric, 6 mm. high, 1 cm. broad or less; bracts 9-10, acvite; ligules 

 bright yellow, 5-8 mm. long. Mountains: Ore. — Ida. — Nev. Submont. — Mont. 



103. ANTHEROPEAS Rydb. Daisy Dwarf. 



Low floccose annual herbs, branched at the base. Leaves alternate, spatu- 

 late to hnear-spatulate, entire or 3-toothed. Heads radiate. Involucre cam- 

 panulate; bracts 5-9, elliptic, distinct or nearly so, concave and slightly en- 

 folding the ray-achenes; receptacle strongly convex or low-conic, obtuse, naked. 

 Ray-flowers 5-9, pistillate and fertile; ligules yellow, white, or tinged with rose 

 or purple. Disk-flowers hermaphrodite and fertile. Anthers with subulate tips. 

 Style-branches obtuse or with conic tips. Achenes elongate, narrow, 5-angled, 

 gradually tapering downward. Pappus of 6-12 opaque squamellae, either all 

 elUptic and obtuse or those of the angles hnear-lanceolate and produced into an 

 awn-tip, or rarely wanting. 



Pappus squamellae all oval or obovate, obtuse; leaves broadly spatulate or obovate; 



ligulas vellow or reddish. 1- A. Wallacei. 



Pappus squamellae of the angles narrow, linear-lanceolate or linear; leaves linear or 



nearly so; ligules wliite. 2. A. lanosum. 



1. A. Wallace! (A. Gray) Rydb. Stem 2-10 cm. high, diffusely branched, 

 densely floccose; leaves occasionally 2-3-toothed at the apex, 1 cm. long or less; 

 involucres about 4 mm. high, hemispheric; bracts oblong, obtuse; ligules broadly 

 obovate, 4 mm. long. EriopfnjUum Wallacei A. Gray. Dry plains : Ariz. — s Utah 

 — s Calif. L. Son. Ai>-Je. 



2. A. lanosum (A. Gray) Rydb. Stem 2-8 cm. high, floccose, or in age gla- 

 brate, branched; leaves floccose, 1 cm. long or less; heads campanulate, about 5 

 mm. high; bracts linear-elliptic, acute; ligules broadly obovate, truncate, 4 mm. 

 long. E. lanosum A. Gray. Drv plains: Ariz. — s Utah — CaUf. L. Son. Mr- 

 My. 



104. SYNTRICHOPAPPUS A. Gray. 



Low branched floccose annuals. Leaves alternate, from linear to spatulate, 

 entire or 3-lobed at the apex. Heads radiate, solitary at the ends of the branches. 

 Involucre campanulate; bracts 5-8, oblong, concave and partly enfolding the 

 ray-achenes; receptacle flat. Ray-flowers .5-8, i)istillate and fertile; ligiilcs yellow, 

 or purphsh, rose, and white, oval, mostly 3-lobed at the summit. Disk-flowers 

 about 20, fertile. Anther-tips linear-lanceolate. Style-tips elongate-lanceolate, 

 flattened. Achenes hnear, obpyramidal, 5-ribbed, hairy. Pappus-squamellae 

 dissected into numerous barbellate bristles united at the base into a wing, fall- 

 ing off together, or wanting. 



