316 



CYPERACEAE 



83. Carex multicaulis Bailev. 



Many-stemmed Sedge. 



Fig. 759. 



Caie.v geyeri Boott, 111. Car. 1: 42. pi. 105 (in part). 1858. 

 Carex multicaulis Bailey, Bot. Gaz. 9; 118. 1884 



Rootstocks lignescent. Culms 2-4 dm. high, deep green, smooth, 

 obtusely triangular ; leaves with well-developed blades 1-2 to a 

 culm, the blades 1.5 mm. wide, very rough above, flat or some- 

 what involute; inflorescence of 2-several perigynia, the lower in 

 the axils of long-cuspidate scales, the upper in the axils of short- 

 cuspidate scales which are enlarged and white hyaline at base; and 

 a terminal staminate part 7-25 mm. long, 1.5-2 mm. wide, with very 

 obtuse broadly white hyaline margined scales ; perigynia appressed- 

 ascending, oblong-obovoid, triangular, 5-7 mm. long, the sides con- 

 cave and 2.5 mm. wide, pale green, 2-keeled and finely and ob- 

 scurely nerved, subcoriaceous, tapering to the stipitate base, ab- 

 ruptly beaked, the beak minute, entire or nearly so, minutely denti- 

 culate ; achenes triangular, closely enveloped ; stigmas 3. 



Dry soil, Transition Zone; sonthern Oregon through northern and middle 

 California and to southern California along the Sierra Nevada. Type locality; 

 Yosemite Valley. 



84. Carex geyeri fioott. 

 Geyer's Sedge. Fig. 760. 



Carex geyeri Boott, Trans. Linn. Soc. 20: 118. 1846. 



Rootstocks thick, lignescent. elongated. Culms up to 3.5 dm. 

 high, sharply triangular, very rough on the angles; leaves with 

 well-developed blades usuallv two to a culm, the blades erect, thick, 

 flat, 2-3.5 mm. wide, very rough on the margins, developing after 

 flowering; inflorescence 'of two or three perigynia, the lower in 

 the axils of short-awned scales, the upper in the axils of obtusish 

 or acutish scales, which are straw-colored with hyaline margins 

 and largely conceal the perigynia; and a terminal staminate part 

 5-10 mm. long, 1.5-3 mm. wide, with oblong-ovate, striate, obtusish, 

 straw-colored scales; perigynia appressed-ascending, oblong, tri- 

 angular, 6 mm. long, straw-colored, smooth, shining, the sides 2.5 

 mm. wide. 2-keeled but otherwise nerveless, tapering to the short 

 stipitate base, rounded at apex and abruptly minutely beaked, the 

 beak entirely or nearly so, minutely denticulate around the base ; 

 achenes triangular, closely enveloped; stigmas 3. 



Dry mountain sides and open woods, Arid Transition Zone; Alberta and 

 Colorado to Washington and northern California. Type locality: Rocky 

 Mountains. 



85. Carex exserta Mackenzie. 



761. 



Short-grass Sedge. 



Fig. 



Carex filifolia W. Boott in S. Wats. Bot. Calif. 2: 229. 1880; not Nutt. 

 Carex filifolia erostrata Kiikenth. in Engler Pflanzenreich 4=": 86. 1909. 

 Carex exserta Mackenzie, Bull. Torrey Club 42: 620. 1915. 



Densely cespitose, the culms very slender and wiry, 5-25 cm. high, 

 obtusely triangular, smooth, the basal sheaths filamentose. Leaf- 

 blades "acicular, 0.25-0.5 mm. wide ; spike androgynous, bractless, 7-15 

 mm. long, the terminal staminate part often more than half the whole, 

 the pistillate part up to 6 mm. wide with 2-12 ascending perigynia ; pistil- 

 late scales orbicular-ovate, obtuse, dull reddish brown with hyaline 

 margins ; perigynia obovoid, triangular, 2-ribbed but otherwise nerve- 

 less, 2.5 mm. long, papillose-puberulent, rounded at base and apex, es- 

 sentially beakless, hyaline and obliquely cut at mouth ; achenes tri- 

 angular; style black, exserted; stigmas 3; rhacheola conspicuous. 



In dry places at elevations between 1500 and 3500 meters from southern Oregon, 

 south in the .Sierra Nevada of California to Tulare County and in the San Ber- 

 nardino Mountains; Transition Zone. Type locality: tcho Lake, Eldorado 

 Countv, California. 



