242 CYPERACEAE 



124. C. rostrata Stokes. Cespitose, sending forth long horizontal stolons; 

 culms phyllopodic, 3 to 12 dm. high ; leaf -blades 2 to 12 mm. wide ; staminate 

 spikes 2 to 4, slender, 1 to 6 cm. long ; pistillate spikes 2 to 5, remote, cylindric, 

 sessile or short-peduncled, 1 to 15 cm. long; scales lanceolate, sharp-pointed; 

 perigynia ovoid, 4 to 6 mm. long, greenish straw color or darker tinged. 



Swampy places: abundant in the Sierra Nevada from Butte Co. to Tulare 

 Co., 4000 to 6200 ft. ; San Bernardino Mts. ; San Francisco Bay region. North 

 to Alaska, east to the Atlantic. 



Locs. Sierra Nevada: Cliieo Mdws., Heller 11494; Truckee, Heller 7108; Walker Lake, 

 Mono Co., Congdon; Yosemite, Bolander 4968; Bishop Creek, Inyo Co., Davidson 2555; Grant 

 Park, Dudley 1225; Little Kern Lake, Kern River Canon, Jepson 4940. Bear Valley, San 

 Bernardino Mts., Abrams 2850. San Francisco, Bolander 152. 



Eefs. CAREX KOSTRATA Stokes in With. Arrang. Brit. PI. ed. 2, 2:1059 (1787), type from 

 Great Britain; Mackenzie, Erythea 8:89, fig. 50 (1922). 



Sect. 34. Pseudo-Cypereae Tuckerm. Culms tall, generally stout, acutely angled, leafy below. 

 Leaf-blades flat, septate-nodulose. Spikes 3 to 9, the upper 1 to 3 slender, staminate, the 

 others normally pistillate, densely flowered, the upper approximate, the lower remote and 

 strongly peduncled, often nodding. Bracts leaflike, much exceeding the culms, mostly not 

 sheathing. Pistillate scales aristate. Perigynia spreading or reflexed, membranaceous or 

 stiff, triangular or circular in cross-section, 3 to 8 mm. long, closely many-ribbed, greenish 

 straw-color, smooth, stipitate, contracted into a rigid beak, the teeth slender. Achenes 

 triangular. Stigmas 3, short. 



125. C. hystricina Muhl. Cespitose and stolonif erous ; culms 1.5 to 10 dm. 

 high, rough above ; leaf -blades 2 to 10 mm. wide ; staminate spike 1 to 5 cm. long, 

 slender-peduncled; pistillate spikes 1 to 4, approximate or strongly separate, 

 densely many-flowered, oblong or oblong-cylindric, 1 to 6 cm. long, the lower 

 slender-peduncled; scales green, 3-nerved, rough-awned, narrower and mostly 

 shorter than perigynia; perigynia 5 to 7 mm. long, ascending or at length 

 spreading. 



Swampy soil, Trinity Co. (Rush Creek, Yates 423). North to Alberta, east 

 to the Atlantic. 



Eef. CAREX HYSTRICINA Muhl. in Willd. Sp. PI. 4:282 (1805), type from Penn. 



126. C. comosa Boott. Cespitose and not stolonif erous ; culms 5 to 15 dm. 

 high, strongly roughened to smooth ; leaf -blades 6 to 16 mm. wide ; staminate 

 spike 3 to 7 cm. long, slender-peduncled ; pistillate spikes 1 to 4, densely many- 

 flowered, oblong-cylindric, 1 to 7.5 cm. long, the upper erect and short-peduncled, 

 the lower slender-peduncled and at length nodding ; scales narrow, mostly shorter 

 than perigynia, very rough-awned ; perigynia lanceolate, rigid, 5 to 7 mm. long, 

 reflexed when mature. 



Swamps near the coast: San Bernardino Valley; Santa Cruz Mts. to Lake 

 Co. North to "Washington, east to the Atlantic. 



Loca. Santa Cruz Mts., Bolander 69; San Francisco, Bolander 2301 (in part) ; Guerneville, 

 Davy ; Blue Lakes, Jepson 26a, 26b. 



Refs. CAREX COMOSA Boott, Trans. Linn. Soe. 20:117 (1846), Ga, and Car., Elliott; Mac- 

 kenzie, Erythea 8:91, fig. 51 (1922). C. furcata Ell. Sketch Bot. S. Car. and Ga. 2:552 (1824), 

 S. Car. and Ga~, not C. furcata Lapeyr. (1813). C. pseudo-oyperug L. var. comosa Boott, 111. 

 Car. 4:141 (1867). 



