226 CICHORIACE^:. 



f - Heads large, and Ugules elongated. 



2. A. graiidiflora (Nutt.), Greene. Bather more lanate than the 

 last, often as large: leaves more deeply and constantly pinnatifid, the 

 terminal undivided part oblanceolate, obtuse: ligules light yellow, elon- 

 gated, spreading, the expanded head 2 3 in. broad: achenes about 3 

 lines long, the beak 10 lines. Plains of the eastern part of Solano Co. 

 and far northward; not in the Bay region proper. May. 



3. A. intermedia, Greene. Size of the last, nearly, pale green and 

 glaucescent, but with some lanate pubescence when young: leaves with 

 a linear rachis, many remote narrowly linear pinnate segments and a 

 long linear-acuminate terminal lobe: expanded ligules forming a head 

 2 in. broad, fl. pale yellow: achenes 2 2% lines long, very sharply 

 carinate-ribbed, the ribs along their bases closely beset with short stiff 

 setulose hairs; beak 810 lines long. Mt. Diablo, near the summit, and 

 elsewhere, at considerable elevations of the inner ranges. 



4. A. hirsnta (Hook.), Greene. Hirsute-pubescent, not rarely caules- 

 cent and the depressed or ascending stem 6 in. high: leaves from narrowly 

 spatulate and merely toothed or lyrate-pinnatifid, to pinnately parted 

 into linear lobes: scapes or peduncles slender, 11^ ft. high, reddish; 

 the elongated bright yellow ligules also fading reddish: achenes slender- 

 fusiform, 1% lines long or more, the beak only about twice as long; pappus 

 usually dull or yellowish white. Only on open grassy slopes near the 

 Bay and seacoast. May Nov. 



5. A. apargioides (Less.), Greene. Very near the last, but every 

 way much smaller, the leaves more remotely and slenderly pinnatifid: 

 heads only ^in. high: beak not longer than the body of the achene.Saud 

 hills of San Francisco; flowering almost throughout the year. 



* * Perennials; achenes abruptly beaked from a truncate summit. 



6. A. retrorsa (Benth.), Greene. Hoary with a woolly pubescence: 

 leaves pinnately parted into linear-lanceolate usually long retrorse lobes, 

 the terminal one long and narrow, all callous-tipped: ligules long, pale 

 salmon-color: achenes truncate, 3 lines long, the filiform beak nearly an 

 inch. Higher elevations of all the coast mountains. June, July. 



# * * Annuals; manifestly caulescent. 



7. A. heterophylla (Nutt.), Greene. Slender, seldom 1 ft. high, 

 more or less villous or hirsute: leaves spatulate to oblanceolate, toothed 

 irregularly, or entire: heads % % in. high; ligules short and inconspic- 

 uous: achenes about 2 lines long, with beak of about 3 lines; inner 

 achenes mostly with obsolete ribs and not rilled to the summit by the. seed; 

 outer ones extremely variable, normally with ribs developed into broad 

 undulate wings, otherwise merely ribbed and hirsute, or again, inflated 

 to the subcylindric and the ribs not visible. Very common, and dispersed 

 widely beyond our limits. April May. 



