SEDGE FAMILY. ' 91 



4. C. nudata Boott. Stems sharply angled, scabrovis, 12 to 16 in. 

 high, slender, clothed at base with conspicuous dark brown leafless 

 reticulate-fibrous sheaths; leaves 1 to 2J lines wide, setaceously 

 pointed, shorter than the stem; bracts without sheaths, lowest rarely 

 equaling the stem; auricles purple, oblong; perigynium purple above, 

 straw-colored below, deciduous. 



Coast Ranges from San Francisco to TJkiah: Marin Co., in a creek, 

 no. 2299; Sonoma Co., no. 3836; Mill Creek, Ukiah, no. 4638; 

 Oakland Slough, no. 6202; all Bolander, teste Boott. Apr. 



5. C. obnupta Bailey. Rootstock creeping, stoloniferous; stems 

 2 to 4 ft. high, forming large, dense clumps, clothed with dead 

 sheaths below; leaves almost equaling the stems, 2 to 3 lines wide; 

 margins scabrous; bracts much exceeding the stem. 



Common in moist caiions and on the borders of streams and swamps 

 in the Coast Ranges: type localities "San Mateo Co., Kellogg; Sierra 

 Nevada (Donner), Kellogg and Brannati; Port Point, San Francisco, 

 Bolander;" Olema; Lorin, Dory. 



6. C. aquatilis TVahl. Rootstock stoloniferous; stems 2 to 3 ft. 

 high, stout, obtusely angled, smooth, spongy at base; leaves pale, 

 IJ to 3 lines wide, often exceeding the stem; bracts foliaceous, clasp- 

 ing, without sheaths, lower much exceeding the stem. 



Santa Clara Valley, 12 miles from San Jose, Bolander, teste Boott. 



7. C. Sitchensis Presc. Stems 2 to 5 ft. high, stout, sharply 

 angled, scabrous, many-leaved at base; lower sheaths reticulate- 

 fibrous; leaves 3 to 4 lines wide, rigid, the cauline shorter, the radical 

 longer than the stem; bracts without sheaths, foliaceous, the lower far 

 exceeding the stem; auricles purple, clasping. 



Salt-marshes about San Francisco Bay, Bolander, and northward 

 along the coast, teste Boott. 



8. C. globosa Boott. Rootstock stoloniferous; stems 4 to 16 in. 

 high, very slender, scabrous, clothed at base with reddish-purple 

 sheaths that break up into thread-like fibers; leaves firm, 1 to 2 lines 

 wide, the lower longer than the stem; lower bracts short-sheathed, 

 longer than their spikelets. 



Coast Ranges amon^ redwoods: highest point of Oakland Hills, 

 Bolander, no. 2298, teste Boott. 



9. C. marcida Boott. Stems 1 to 2J ft. high, slender, scabrous; 

 leaves 1 line wide, shorter than the stem; flowers often more or less 

 dioecious. 



On the JLower Sacramento, PickeriTig; Santa Clara Marshes, 

 Peckham, teste Boott; Point Isabel, Davy. Apr. 



10. C. Brongniartii Kunth. Rootstock creeping; stems 10 to 30 

 in. high, firm, slightly scabrous above; leaves shorter than the stem, 

 1 to 2^^ lines wide; bracts setaceous, exceeding the spikelets, the 

 lowest "sometimes exceeding the stem.— -(C. glomerata of Bot. Cal.) 



From about San Francisco Bay, Bigelow, Bolander, to Mendocino 

 City, Bolander, teste Bailey. "Tar. densa Bailey (C. paniculata of 

 Bot. Cal.), described as "densely csespilose" and as having denser 



