SUNFLOWER FAMILY 250 
Stony desert slopes, Lower Sonoran Zone; sme pee goers County (Clark ag ge preonrd California, 
pesos theaeh pe sage Pag i and the mounta f San and Orange Counties to Lower California, 
eastward t ern , Texas, and Son ma sl ie i er Bo Bay, Lower California. March- 
aoe 
Tribe 3. ASTEREAE* 
Heads all Pelaci perfect disk- sista commonly radiate, not dioe 
be fee 
Ray only pieeineh wanting; disk- Pate ae 
Pappus ot pala, scales, or flat wns. 
Leaves usually rat 
e pe more than 5 mm. wide; achenes glabrous; Ba cart a firm deciduous 
Leaves ae mostly much less than 5 mm. wide; achenes hairy; pappus of 10 or more persistent 
members. 
pi 
Leaves filiform to narrowly oblanceolate; pappus of 10-12 sordid, oblong, free scales; phyllaries 
not prominently § scarious-margine ed. . Gutierrezi 
Leaxen: bade wg in Oey pappus of 15-40 bee, — narrow paleae; ahs ities broad, 
an. 
‘o 
unded, with p ent, scarious, erose mar 
ads lomerste ‘disk: ae ers 4-7; plant spinescen 70. Amphipappus 
aoe solitary but cciecicaa approximate; ix flowers mostly 20 or more; plant not 
spinescent. . Acamptopappus. 
Papp f capill secs a) sometimes with some short outer scales as well. 
a 
Pappus "ak disk: flowers double, the inner series of capillary Male the outer much shorter. 
R 
ay-flowers with copious pappus and pubescent achenes. rysopsis 
Ray-flowers epappose or the pappus eae sa to a Cg crown and with essentially 
ahs achenes 73. Heterotheca. 
Pappus of a ge i: Ie generally unequal but not divided into two lengths. 
Disk- ower fer 
eh sauna never rhizomatous. 
eads nodding in bud; slender, usually diffuse annuals with slender or 
filiform stems; shytlaries thin with prominent scarious margin. 
74, PELTON EE 
Heads erect or at least not nodding in bud; ostly perennial herbs o 
ia i heads usually few and yo soak fs “large, if ponte and ag nicled thon 
opappus 
Renan shr ae . Haplo 
Plants oe numer roots arising fro a zome or caudex, eset a 
taproot; aot peo ay ad and very PO, we herbace 
olidago. 
Disk- ee sterile. 
Plant a 
nnual; phyllaries not in vertical ranks, with reeuered ae sits a prominent 
land. 
76. 
Plant a tufted perennial herb; phyllaries in vertical ranks, ih 6 erede tip not bearing 
a prominent gland. 78. Petradoria. 
Ray-flowers none. 
Plants are: 
Tie | in more or = eee vertical ranks. yi ND BF nl eeretticay 
wi llaries not in vertita 75. Ha blo wr Aguas 
Plant a diffusely ch, 92. Les. 
Ray-flowers ai pink, purple, or blue, sometimes very inconspicuous, occasionally pooh ae —. 
yellow, white, pink, or reddish purple. 
Pappus none; receptacle comnse i pants scapose 80. Bellis. 
Pappus present; habit various. 
Pi 
pil nnien few to numerous, in 1 or more series, usually with conspicuous rays; disk-flowers 
few to generally numerous 
Pappus of a ee or scales, sometimes with additional  hapigee 
Di y 
leafy panicles. 
pene . Boltonia. 
Disk-achenes not winged; flowers mostly solitary. 
Pappus of iti bristles | alternating with short pes or of a scarious cup and 
bristle nnuals 2. Monopftilon. 
Pappus of “numerous rigid narrow awns, or awns ae neal or scales only; ours 
mostly plants. 83. Townsendia. 
Pappus of mostly capillary bristles. 
Ray- baled present, sometimes very inconspicuous ‘ i 
firm bristles; phyllaries with MS scarious margins; small an wit 
— whi ite or pexplaia? : 74. C hactopappa bellitore. 
Pappus usually of dents bristles, in Erigeron very rarely as few as 5 a 
plants perennial. 
Achenes beaked; phyllaries decid t 1 with — branches. 
84. acyina. 
Achenes not beaked; phyllaries persistent. 
us in ray-flowers obsolete or none; leaves mostly laciniate-pinnatifid; 
slender ee annual. . Psilactis. 
Pappus present in both ray- and disk-flow 
Phyllaries ent obviously pecan? and imbricated in 3 or more 
series. 
St vlebranches of disk-flowers not tipped with a prominent tuft of 
: w hairs; ray-flowers fertile; pappus not reddish. 
isa usually rhizomatous or =~ fibrous roots, if an- 
nuals then leaves pacts So entire 
* Key by David Daniels Keck. 
