SUNFLOWER FAMILY Sok 
are merely spinosely acute, the margins of all phyllaries — spinulose-ciliate ; flowers lavender- 
m. lon tube 10-1 
rose, SRSA a little in the ore the corolla 2.5 ¢ the 2 mm. long, i aes 
ong, the lobes long; achene Be 5 Avior och ay 55.5 m 
blackish brown ; pappus whitish A edi i me 2c ar ong. 
t soil or shallow water along sloughs and c , Upper and Lower Sonoran Zones; at two widely sepa- 
rated localities in the northern and tiers San pee: n Valley in San Joaquin and Kern ‘Cant ies, California. 
Type locality: “low, grassy, and occasionally iatieaaned’ river bottoms of the lower San Joaquin, near Lathrop 
California.’’ May—Sept. 
24. Cirsium quercetérum (A. Gray) Jepson. Brownie Thistle. Fig. 5925. 
Cnicus quercetorum A. Gray, Proc. Amer. Acad. 10: zt = 
Cirsium bee Jepson, Fl. W. Mid. Calif ce 
Cirsium quercetorum var. mendocinum Petrak, B “ag 8 PRS 35: 364, 1917. 
Perennial with wi a spreading, sabia like roo Areal which le = deacon ety shoots arise, 
the shoots a ee Orne a stout taproot ——- caudex- ‘hike wn; stem wath oa oo 08 nd 
and more sparsely pate 
5923. Cirsium andrewsii 
5924. Cirsium crassicaule 
5925. Cirsium quercetorum 
gilt Wy uf 
m, 
Hp. 
(Yi = 
