334 



CYPERACEAE 



137. Carex nebraskensis Dewey. 



Fig-. 813. 



V. 3: 398. 1836; not Schw. 



Nebraska Sedge. 



Meadows 

 British Colu 



and 

 mbia. 



swamps, 

 Type 1 



Arid Ti 

 ocality : 



Care.v jaincsii Torr. A.m. Lye. N. 



1824. 

 Care.v nebraskensis Dewey, Am. Journ. Sci. II. 18: 102. 1854. 

 Lare.v nebraskensis praevia Bailey, Mem. Torrey Club 1: 49. 



1889. 

 Carex nebraskensis nitriforntis Bailey, Bot. Gaz. 21: 8. 1896. 

 Carex jacintoensis Parish, Bull. South. Calif. Acad. Sci. 4: 



110. pi. 16. 1905. 



Rootstocks creeping and stoloniferous, the culms 

 2.5-10 dm. high, stout, rigid, phyllopodic, roughened 

 or smooth above. Leaf-blades 3-8 mm. wide, pale 

 green, flat, the sheaths nodulose, white hyaline ven- 

 trally ; stamiuate spikes 1-2, more or less peduncled, 

 1.5-3.5 cm. long, 3-6 mm. wide; pistillate spikes 2-5, 

 oblong, sessile or short-peduncled, 1.5-6 cm. long, 

 6-9 mm. wide, contiguous or the lower separate with 

 many ascending perigynia; lowest bract about equal- 

 ling culm ; scales lanceolate, obtusish to acuminate, 

 ))lackish with light midvein ; perigynia 3-3.5 mm. 

 long, 2 mm. wide, compressed by-convex, ribbed, 

 coriaceous, greenish straw color, rounded and sessile 

 at the base, contracted at apex into the bidentate 

 l)eak; achenes lenticular; style slender; stigmas 3. 



ansition Zone; South Dakota and Kansas to New Mexico, California, and 

 Nebraska. 



138. Carex paucicostata Mackenzie. 

 Few-ribbed Sedge. Fig. 814. 



Carex lenticularis W. Boott in S. Wats. Bot. Calif. 2: 242 (in part). 



1880; not Michx. 

 Carex interrnpta imprcssa Bailey, Mem. Torrey Club 1: 18. 1SS9. 

 Carex paucieostata Mackenzie, Erythea 8: 74. 1922. 



Cespitose with very short ascending stolons, the culms 

 slender, phyllopodic, 2.5-4 dm. high, sharply triangular, 

 smooth or little roughened. Leaf-blades light green, 2-4 

 mm. wide, flat or channelled at the base, the sheatlis 

 smooth, very thin and hyaline ventrally ; terminal spike 

 •staminate, short-peduncled or nearly sessile; pistillate 

 spikes 4-6, linear, 3.5-5 mm. wide, 1^ (mostly 2-3)*, cm. 

 long, the numerous perigynia appressed-ascending ; lower 

 bracts exceeding the culms ; scales oblong, olituse or 

 acutish, somewhat shorter than the perigynia, falling early 

 but after perigynia, dark-colored with lighter center and 

 hyaline apex ; perigynia very broadly ovate or obovate, or 

 suborbicular, 2 mm. long, 1.5-2 mm. wide, glaucous green, 

 papillate roughened. 3-5 ribbed ventrally, minutely and 

 abruptly black apiculate tipped ; achenes lenticular ; style 

 slender ; stigmas 2. 



Wet places, mostly around lakes. Transition and Canadian Zones: 

 Sierra Nevada of California from Tulare County to El Dorado 

 County. Type locality: Summit Camp, California. 



139. Carex hindsii C. B. Clarke. 



Hinds's Sedge. 



Fig. 815. 



Carex decidua Boott, 111. Car. 1: 163 (as to N. Am. plant). 

 Carex hindsii C. B. Clarke, Kew Bull. Misc. Inf. Add. Scr 



1S5S. 

 8: 70. 



1908. 



Cespitose with stout usually very short ascending stolons, 

 the culms slender, 1-6 dm. high, phyllopodic, brownish at base, 

 sharply triangular, smooth or little roughened. Leaf-blades 

 1.5-3 mm. wide, flat or channelled at the base, the sheaths 

 smooth, very thin and hyaline ventrally; terminal spike mostly 

 staminate, long-peduncled ; pistillate spikes 4-6, linear or ob- 

 long-linear, 1.5-4.5 cm. long, 5-7 mm. wide, the numerous 

 perigynia appressed-ascending ; lower bracts exceeding culms ; 

 scales oblong, obtuse or acutish, much shorter than perigynia, 

 early deciduous, blackish with lighter center and hyaline apex; 

 perigynia ovate, 2.5-3.5 mm. long, 1.5-2 mm. wide, yellowish 

 greeii, rilibed, papillate roughened, strongly stipitate, the upper 

 part empty, minutely black apiculate-tipped ; achenes lenticular; 

 styles slender ; stigmas 2. 



Wet places along the coast, Canadian Zone; Aleutian Islands and 

 Alaska (where abundant) southward locally to Del Norte County, Cali- 

 fornia. Type locality: Columbia River. 



