306 



CYPERACEAE 



53. Carex davyi Mackenzie. 

 Davy's Sedge. Fig. 729. 



Carex siccata W. Boott in S. Wats. Bot. Calif. 2: 230. 1880; not Dewey. 

 Carex davyi Mackenzie, Bull. Torrey Club 43: 606. 1917. 



Densely cespitose, the culms 2.5-3.5 dm. high, smooth, erect, 

 slender, much exceeding the leaves. Leaf-blades 1.5-2.5 dm. 

 wide ; head about 2.5 cm. long, the spikes usually three, ap- 

 proximate, oblong-obovoid, 12-18 mm. long. 6-8 mm. wide, 

 with 10-15 appressed perigynia ; bracts not developed; scales 

 oblong-ovate, very obtuse, about half length of perigynia, 

 chestnut with lighter center and hyaline margins ; perigynia 

 lanceolate, thin, green or in age straw-colored, 7.5 mm. long, 

 2 mm. wide, strongly many striate dorsally, less so ventrally, 

 narrowly margined from base, contracted into a substipitate 

 base, serrulate from middle of achene, tapering into the 

 sharply bidentate beak, obliquely cut dorsally ; the apex and 

 dorsal suture reddish-tinged; achenes lenticular, jointed to 

 the slender style ; stigmas 2. 



• In the Sierra Nevada of California known from Placer to Tulare 

 Counties, Transition and Canadian Zones. Type locality: Truckee River, 

 Placer County, California. 



54. Carex specifica Bailey. 



Narrow-fruited Sedge. 



Fig. 730. 



Carex scoparia fulva W. Boott in S. Wats. Bot. Calif. 2: 237. 1880. 



Carex specifica Bailey, Mem. Torrey Club 1: 21. 1889. 



Carex lancifructits Mackenzie, Bull. Torrey Club 43: 607. 1917. 



Culms 2.5-4.5 dm. high, smooth or nearly so, erect, stiff, 

 much exceeding leaves. Leaf-blades 2-3.5 mm. wide, flat or 

 canaliculate ; head globose, 1.5-2 cm. long and nearly as wide, 

 the spikes 6-10, gynaecandrous, oblong-ovoid, 6-9 mm. long,_ 4 

 mm. wide, tapering at each end, with 8-15 appressed perigynia; 

 bracts little developed; scales lance-ovate, acute, exceeded by 

 perigynia, reddish brown with lighter midvein and narrow hya- 

 line margins ; perigynia lanceolate, thin, plano-convex, straw- 

 colored, 6 mm. long, 1.5 mm. wide, finely several to many nerved 

 on both faces, contracted to a substipitate base, narrowly mar- 

 gined (serrulate above) to base, tapering into a bidentate beak 

 one-third length of body, the beak reddish-tipped and obliquely 

 cut dorsally; achenes lenticular, jointed with the slender style; 

 stigmas 2. 



In the Sierra Nevada of California from El Dorado to Tulare Counties; 

 Transition and Canadian Zones. Type locality: Silver Valley, Alpine 

 County, California. 



55. Carex praticola Rydb. 



Meadow Sedge. 



Fig. 731. 



Carex adusta minor Boott in Hook. Fl. Bor. Am. 2: 215. 1840. 

 Carex pratensis Drejer, Revis. Car. Bor. 24. 1841; not Hose 1797. 

 Carex praticola Rydb. Mem. N. Y. Bot. Garden 1: 84. 1900. 



Cespitose, the rootstocks short, the culms slender, often 

 nodding, 2.5-6 dm. high, roughened beneath the head, much ex- 

 ceeding the leaves. Leaf-blades 1-2 mm. wide, flat; spikes 2-6, 

 gynaecandrous. elliptic, 6-16 mm. long, 5 mm. wide, the upper 

 contiguous, the lower remote, in a more or less moniliform head; 

 bracts except lowest not developed ; scales ovate, covering peri- 

 gynia, obtuse, shining, brownish tinged with green midvein and 

 hyaline margins ; perigynia ovate-lanceolate, appressed, 4.5-6.5 

 mm. long, narrowly winged, round-tapering at the base, lightly 

 nerved dorsally, nearly nerveless ventrally, pale green, mem- 

 branaceous, tapering to a beak one-third length of body, terete 

 and smooth above, the apex hyaline, bidentulate, obliquely cut 

 and fissured dorsally; achenes lenticular; style slender, articu- 

 lated to achene ; stigmas 2. 



Greenland to Alaska, south to northern Maine, Michigan, Colorado, and 

 northern California; Transition to Boreal Zones. Type locality: Godthaab, 

 Greenland. 



