SUNFLOWER FAMILY 193 
Tribe 2, HELENIEAE 
pin woolly, hairy, or glabrous, often pein rere or ema glandular-dotted, lacking conspicu- 
us impressed oil-glands; herbage sometimes a , not ill-smelling 
Phyllaries herbaceous or more or less AE pF tee the margins narrowly or not at all scarious, un 
colored; achenes glabrous or pubescent, not conspicuously papillate on both faces (except Chaenactis 
pint 5 
Rar dounts persistent, becoming p: 
aves opposite; receptacle — ilies throughout; plants of the Sierra Nevada. 
38. itneya. 
nennens socndegeanta Shean only, in Hymenoxys acaulis arizonica); receptacle naked; plants mostly of 
ae ete ae ubshrubs; leaves linear, entire; phyllaries 1-seriate. . Psilostrophe. 
Ann ale or ti cm a leaves pinnatifid or parted into linear oe, Bir se in Hymenoxrys 
aulis a but pla nts ac gee phyllaries 2—3-seria 
pte s epappose; leaves atifid with broad divisions. 37. Baileya. 
Achenes with one? ian Siben with linear divisions or entir 47. Hymenoxys. 
Ray-flowers when present a ae , if persist ing, withering 1 and not becoming papery 
Rec cepta acle naked or if Ts 0 nt the 
Phyllaries ime te, ago aby pa tes at apex. 
Leaves alternate; rays 1.5—2 cm. long; erect perennials of eum eg poe canyons, 
sia. 
se few 
Leaves opposite; rays scarcely exceeding disk; widespread creeping i bine of saline 
40. 
abitats. Jau 
idansngs uniseriate, if 2-seriate or more, subequal (somewhat imbricate in Halseo), linear 
r linear-lanceolate, acute at apex (broader and obtuse in por wien We) « 
a . strongly compressed, the margin fringed with hairs (see also Crockeria) or with 
a callous or thickened margin 
Phyllaries flat, in 2 ceciak. series, not prominently ribbed; (a See enone 
one 
ea more or less boat-shaped, uniseriate “2 in 2 subequal series, strongly single 
r+ double-ribbed; plants eee white- floccos 
beni hastate-triangular te, 5-10 cm. long. 
44. Pericome. 
Leaves not i d inat 
Annuals; heads ‘oni white rays; lower leaves 5 or more cm. long. 
42. Perityle. 
nnials; heads peal leaves 1-3 cm. 43. Laphamia 
Achenes neon linear clavate, turbina or prep “teoaty or sharply sueled, often 
ribbed d:(see ‘Ps —_ bahia). 
flexed d g k large, globose or dome-shaped. 
48. Helenium. 
Rays = a not reflexed during anthesis; phyllaries erect or spreading, some- 
reflexed re achenes are mature; disk small to medium, if large not 
ss or markedly dome-shaped. 
‘ede — the rays ga small and inconspicuous (lacking in some desert 
nual species of Eriophyllum). 
Phyttaries 20 or more, somewhat imbricate in 2-3 series, not subtending 
the rays. 45. Hulsea 
vers a 13, subequal in 2 series, more or less subtending the ray- 
nuals or perennials. 
“all leaves opposite ‘pring ware aes 
Margin 
Phyllaries distinct or ee united * abe bene 
Phyllaries partially united, forming a sae 
50. Lasthenia 
Margins of the achenes prominently fringed with clavate 
glandular hairs. 
Leaves ae sometimes the lower visipnattie: annuals or peren- 
Herbage lg aera inflorescence with pandtipeet hairs; south- 
f ranges. 
Herbage more or less iil: floccose (leaves sometimes becom- 
greenish above) or dense white-tomentose. 
Bereniiais or woody-based subs Ss. : 
54. Eriophyilum. 
Annuals. 
bearee: a or bipinnatifid; glandular hairs in 
at base of seceeag and uppe og ube. 
. Pseudobah 
Leaves ig lobed or Saree glandular oie on 
the corolla scattered. 
Achenes epapsnnes small lobe opposite the ray on 
of tube; on weg" poet plants of 
Sacranieat o-San y Valley and cen- 
tral and southern Ca fernia Coast Ranges. 
53. Monolopia. 
Achenes with pappus paleaceous or a ring of 
bristles or reduced to a crown cerserce 
in Synt TIC. popenins lemmonii) ; ostly 
Pappus oa teiee 
a oat PB vESifeenta % arededh 
54. Eriophyllum. 
