SUNFLOWER FAMILY 213 
Leaves entir 
tiie i eh 
Lea a to broadly pag’ 2-10 mm. wide. ) ae nese 
pitt linear-filiform, 0.5-2 m 2. B. bake 
incase senual 
hila 
5. B. microglossa. 
Lavelucres oe cylindric; rays bead or ore 
ine campanulat e or turbinate; rays 2-5 mm. lon 
Stems wiry, erect, scarcely raked inion. yeti A cae a’ 
B. leptalea. 
Stems weak, freely branching; anther-appendages deltoid, at 
6. B. debilis. 
Receptacle broadly or ey ly cone-shaped or dome- 
eceptacle dome-shaped (except in B, fremontii he terochaeta), muriculate and often finely hirsute; 
achenes 1 mm. Sot ng (leaves entire only on depauperate plants). 
9. B. fremontit. 
Receptacle conical, muricate, often ae: so; achenes 2.5-3.5 mm. long. 
age spreading-hirsute or Strigose both. 
b ith spreading hairs oS ome finer, meng or _aecomtin’ 
i irs on lower 
eae 2—7 when present, ‘ater or 
re) 
r 
Leaves linear, acute; stems slender, usually with erect or ascending b no a 
ies: parosesteuas pe 
Leaves linear-oblong to oblong-spatulate; stems egegetee and he bie yo ing. 
a hirsutula, 
Herbage mostly strigose only, with very few or no ciliate Sis on the et leaf-marg 
achenes nearly linear, the teh ‘op 2-5 when present, whitish, ovate- lanceolate 
ham lly and tapering into a long a 3. B. chr ysostoma gracilis. 
Herbage villous-tomentose or Sea? to pre be or nearly so. 
Phyllaries carinate in only at the base, midvein not prom ——. ian aie evident except 
at the base; slants Hoan: nlbicgtvcn' to an scarcely gisbre abra 
the midvein prominent heads waste the whole length; 
sian Lagi carinate in age, 
villous-pubescent around the - 
B. platycarpha. 
Leaves pinnately parted or lobed, the lobes sometimes minute, 
erba rage warioys usly fi sc eee but not gla ndular 
mes W rith 2 or 3 short lobes. 6. B. debilis. 
p 
R tacl ical or dome shaped 
~~ 
Perennial; 1-2 short lobes peers present on some leis ad occasional plants 
1. B. macrantha. 
ants. 
chrysostoma hirsutula. 
the leaf-bases, finely pubescent or loosely vil- 
te lob ly present on some leaves of cea iar pl 
Annual; 1-2 
peck when present never — or ciliate on 
s-tomentose or even woo 
11 mm. wide), the salient lobes 1-10 mm. long. 
a broadly linear (2- 
7. B. minor. 
pee poner the divisions filiform-spreading, mostly 0.5-1 cm. lon 
y Rho present alike, a —— ovate, tapering to a awn; Bink 3-3.5 mm. long; 
sor bla tycarpha. 
volucre broadly cay bitt 
‘cba pete present paler ‘ol awns and intervening scales achenes 1-1.5 mm. long; 
involucre broadly hemispheric. i: fr ag 
Herbage variously pubescent and also glandular; leaves nearly entire on Pliae pla: 
10. B. eigoraice: 
5347. Helenium bolanderi 
