SUNFLOWER FAMILY 173 
Ray- and disk-flowers more _ ni 
Ray- she ‘sans flow 
Her! bearing” pustuiate hairs, gray- reen; plants ae intricately ments 
mterey County to San Luis Obispo County. 
0. H. 
Herbage bearing simple filamentous hairs, yellow-green; plants ies. ae intri- 
cately branched; southern California. 
Heads saistclaiate, stems tall, scarcely hispid, flexuous and much branched; 
San Luis Obispo County to San Diego County 11. H. ramosissima. 
Heads in dense glomerules; stems lower, Yithis hispid above, with strict 
divaricate branches; coastal plain to Lower ein ae 
12. H. fasciculata. 
Ray-flowers 8; disk-flowers 13—21; southwestern San Diego County. 
13. H. conjugens. 
Disk- ae nied fertile. 
Rad eaves pinnatifid or bipinnatifid; herbage — -hirsute; ray-flowers 8-13, ligules as 
br og as long; cont central California to Lower California. 14. H. paniculata. 
sma: * ve —. — ; herbage bright green, soft- ie eo sad’ mr a by 13-20, ligules 
half as broad a ; rare; southern San Diego Cou H. floribw nda. 
} = 1 
free, 
Leaves tipped with a mae spine or pete ean receptacular 
persistent ; pappus none or of very narrow paleae (Section C seaiens by 
Pappus none; anthers yellow 
Receptacular foots veneent: northern and central Califor; H, pungens. 
Seite bracts obtuse or more or less acute, not par southern California. 
H, laevis 
tacular bracts flesh 
earing Ss! nail Siowtal a if any, of mild odor 
fe i yellow; central Californ 
Anthers black; inflorescence very ime southern California. 
Receptacular bracts long-villous at tip; pappus-paleae 8-12, densely fimbriate at tip; herbage 
bearing large, eee — Leap he rank odor; anthers black. 20. H. fitchit 
Pappus F eoe 
Rec tip, not long-villous; pappus- sag 3(—5), sparsely ciliolate; herb- 
18. H. parr 
19. H.a usteuble. 
Ray achenes not — sly beaked; ligules ; inner receptacular bracts adnate, forming a cell 
about each disk- flower, ieiquescent ‘(eection peel pcone ia). 
Ligules vel dorsally veined with p pre 
; S pro ges 2 time of flowering, er not crowded into 
21. H. multicaulis. 
Spring-flowering (May— 
a bas: 
Fall- eer ay! (Aug.—Oct.), taller; leaves tai SE at time of flowering, very short, crowded 
a basal rosette; dens - pea throughout. 22. H. lutescens. 
Ligules cian eae a ag hon 
Heads paniculate or nal; 
leaves broad. 
ae bracts short, not overtopping the heads. 
e green, merely puberulent; heads scarcely glandular; esha a ae” 
23. H. trac. 
reggae gray or silvery, pubescent; heads obviously glandular; spring- to fall-lowering: 
nflorescence widely paniculate, the heads scattered; herbage villous and copiously 
dark-glandular, or comms phyllaries 3.5—6 mm. long; mostly inland, north- 
forn 24. H. luzulaefolia. 
pero puberulent to sericeous or villous with soft hairs; lower 
ern and centr al Californ 
Inflorescence corymbosely eaieuiata: the heads usually glomerate; herbage shaggy 
with few glands; phyllaries 6-9 mm. long; coastal essa 3 a of 
a Ven sco Bay. 25. if. oi 
See bracts long, overtopping the heads, calyculate; herbage S dtecagte gts 
Men and Lake et age 26. H. calyculata. 
veloped side-branches, obviously Giltornia, herbage pilose; 
Heads epetie, pahe on the fully 
ower leaves narrow; basal obra pir cider: Oregon to northern 
H, clevelandit. 
5268 
