SUNFLOWER FAMILY 569 
Slender, diffusely much-branched annual, glabrous or the stems sparsely eens eco tent 
elow, the branchlets slender and divergent. ower leaves oblanceolate or spatulate, 5-20 m 
(9) Oo olte 
ong; flowers gules abou . long, rather deeply lobed, ae e ae whitish; achenes 
3-4 mm. long, oak ie Lspeanay he iscsi pete rather rigid, bright white. 
ane ledges et eter aoe a Zones; Moja sah) ste Colorado sia. southern California east to 
a = Texa: as. e loc : El Paso, Texas. "Apr 1M 
mia jincea UP urs an D. ake. Edinb. New Phil. BR 1829: 311. pec (Prenanthes agers ea Purs' 
FI. Pressey Fees eae “I8i4 ) iE, ose umes ee be denser sharia a om a deep-seated, creeping root and Gearine 
no sera tufts of w y be ted in rn Washington, as it occurs in British Columbia oa Idaho and 
Montana, but no cee Wires haere b ay n. 
157. STEPHANOMERIA Nutt. Trans. Amer. Phil. Soc. II. 7: 427. 1841. 
Nomen conservandum 
Annual or perennial, Riche _osmeton — often glaucous herbs, sometimes woody at the 
base, wit th erect, simple or branched s Leaves alternate o r basal, entire or runcinate- 
pinnatifid, those of the ‘cantine often ses and scale-like. Hea ids subsessile or pedunculate 
in panicles or solitary at the ends of the branches. Involucre cylindric or oblong, the phyl- 
5983. Lygodesmia exigua 
5984. Stephanomeria cichoriacea 
5981. Chaetadelpha wheeleri 
5982. Lygodesmia spinosa 
