SUNFLOWER FAMILY 119 
purple, or brown. Involucre hemispheric or broader, 2—4-seriate, subequal or graduate, 
as subtended by a few leafy bracts, the phyllaries mostly lanceolate, herbaceous through- 
out or somewhat indurate at base. Receptacle flat, the receptacular bracts folded, on or 
soft and scarious, partially enclosing the achenes. Rays ligulate, spreading, o or 
oval, 2-3-dentic ulate; disk-flowers perfect, fertile, with slender tube and cvliedeia sims 
5-toothed. Ashe rs minutely cordate-sagittate at base. Style-branches slender, te a a 
with deltoid or short-triangular, obtusish or acutish appendages. Achenes obovate to ob 
cordate in outline, notched at apex, flatly compressed or in one species oe thickened 
medially, narrowly whitish-margined (except in one species), glabro t 
Pappus of 2 slender persistent awns and a crown of thin, more or ate , scarious 
squammellae, rarely reduced to 2 awns or teeth or wanting. [Name Latin, little sunflower, 
from the likeness to Helianthus. 
A genus of 8 species, — of British Columbia, western United States, and northern Mexico. Type spe- 
cies, Satutins unifiorus Nut 
Heads reflexed or senened horizontally at anthesis; receptacular bracts thin, scarious. 2. H. quinquenervis. 
receptacular bracts firm, charta 
ceous 
nena cauline leaves largest, nearly all sessile or very short-petioled; achenes appressed- those on sides, 
more or less ciliate. 1. H. uni 
Lower cauline leaves largest, narrowed into definite petioles; achenes glabrous or prt bienidulees as apex 
Phyllaries ie aces over the disk at maturity, the outer rarely enlarged; achenes ag Ag flatly a 
} californica 
Phyllaries curved over the disk at maturity, some of the outer enlarged and leaf-like; achenes distinctly 
thickened medially. 4. H. castanea. 
1. Helianthella uniflora (Nutt.) Torr. & Gray. Rocky Mountain Helianthella. 
Fig. 5168. 
Helianthus uniflorus Nutt. Journ. Acad. Phila. 7: 37. 1834. 
Leighia lanceolata Nutt. Trans. Amer. Phil. = i: Af we ay 
i cpa: uners Lagi & Gray, Fl. N. Am 2. 
D. C. Eaton, Bot. Kine east ert 181 
Perennial from a short, thick, Breechine caudex ; stems several, 2.5-12 dm. high, simple or 
erect-branched, erect or ascending, more or less appressed-pubescent with a few spreading hir- 
sute hairs, einai glabrate below Basal and lowermost leaves oblanceolate, reduced, petioles 
2-5 cm. re t ms - ne i 
8-20 cm. lon ed and often sess ads 
terminal, fone hotateled: the aii mostly 1.5-2 cm. wide; involucre sometimes pibeeded by leafy 
bracts up to 5 cm. long; phyllaries en attenuate, rathet uniformly pubescent; rays 
about 2-3 cm. long; receptacular bracts firm, hi Ni sity at the blunt apex; achenes obovate. 
flatly compressed, about 9 mm. long, narrow wly margined, appressed- Ries more or less 
ciliate ; pappus normally of 2 s Sasies aaardiy: pubescent unequal awns 5 mm. long or less and 
several scarious fimbriate squamellae about 1 mm. lon 
Dr sas and woods, Arid 1s Zone; Tdaho and an fo hie Colorado, and Nevada; known 
in the Pa scite c States from Harne y County, Oregon. Type | : bs bord ers of the upper pecliboe a of the 
Ate 
‘Helianthella uniflora var. a (Torr. & Gray) W. A. Weber, Madrofio 9: 186. 1948, sh ah sega hg 
douglasit Torr. & Gray, Fl. N. er. 2: 334. 1842.) Stems spreading wide; 
phyllaries ciliate-hirsute only, Pay putesreoes rarely enlarged; rays 3-4 cm. long. Southeastern Briti ib Coligmbia 
south to central and eas' ore Washington and central Oregon, and adjacent Idaho. Type locality: Ehatging ranges 
of the Blue Mountains, Oreice. Collected 29 psi pte False Sunflower 
. 
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5166. Rudbeckia alpicola 5167. Rudbeckia occidentalis 
