SEDGE FAMILY 



265 



10. Eleocharis bolanderi A. Gray. 

 Bolander's Spike-rush. Fig. 633. 



Eleocharis bolanderi A. Gray, Proc. Am. Acad. 7: 392. 1868. 



Perennial by short rootstocks ; culms slender, angular-striate, 

 1-3 dm. high, the upper sheath truncate, 1-toothed. Spikelet ovoid- 

 oblong, many-flowered, about 8 mm. long ; scales dark brown, acute ; 

 bristles much shorter than the achene or wanting; style 3-cleh; 

 achene trigonous, obovoid, smooth, white to yellow, much shorter 

 than the scale, truncate, capped by the broad, nearly flat tubercle. 



Stream banks and moist places, Transition Zone; Sequoia Grove, Mariposa 

 County; wet adobe flat near Forestdale, Modoc County, California. Type lo- 

 cality: banks of stream near Clark's, Mariposa County, California. 



11. Eleocharis decumbens Clarke. 

 Decumbent Spike-rush. Fig". 634. 



Eleocharis decumbens Clarke, Kew Bull. Add. Ser. 8: 23. 1908. 



Perennial by stout rootstocks ; culms stout, subterete. 5-6 dm. long. 

 Basal scales lanceolate, obtuse, brown, 2-3 cm. long, loose ; spikelet 

 ellipsoid, obtuse, 5-7 mm. long, about 4 mm. thick ; scales brown, 

 ovate, obtuse; style 3-cleft, its base • squamose ; achene trigonous, 

 yellow, papillose, obo void-oblong, 1 mm. long; tubercle conic, its base 

 narrower than the top of the achene; bristles as long as the achene 

 and tubercle or shorter. 



Wet meadows. Transition and Canadian Zones; Siskiyou County and Yo- 

 semite National Park, California. Type locality: Mount Shasta, California, 

 at 7,500 feet. 



12. Eleocharis parishii Britten. 

 Parish's Spike-rush. Fig. 635. 



Eleocharis f^arishii Britten, Journ. X. V. Micros. Soc. 5: 110. 1889. 



Perennial by slender rootstocks; culms slender, tufted, 1-2 dm. 

 tall, the upper sheath truncate, 1-toothed. Spikelet linear-lanceolate, 

 acute, 1-1.5 cm. long. 2 mm. thick; scales ovate, pale or chestnut- 

 brown, subcarinate; style 3-cleft; achene trigonous, ellipsoid, yellow- 

 brown, smooth, 1 mm. long, narrowed at each end ; tubercle short- 

 subulate, acute, about one-fourth as long as the achene ; bristles aI)Out 

 as long as the achene. 



Wet soil, Sonoran Zones; California, from Kern and San Bernardino Coun- 

 ties, southward; Nevada. Type locality: Agua Caliente, San Diego County, 

 California. 



