312 



CYPERACEAE 



71. Carex montereyensis Mackenzie. 



Monterey Sedge. Fi 



Care.v montereyensis Mackenzie, Erythea 8: 92 



192 



747 



Cespitose, the rootstock very short, thick, the cuhns 8-10 dm. 

 high, erect, very slender, smooth ; sterile shoots numerous, elongated ; 

 leaves 2.5-3 mm. wide ; the basal bladeless sheaths very conspicuous ; 

 head 1.5-2.5 cm. long, ovoid or short-oblong, the spikes 8-12, gynae- 

 candrous. closely aggregated, ovoid or oblong-ovoid, 6-9 mm. long, 

 4.5-6 mm. wide, the perigynia 15-35, ascending or spreading-ascend- 

 ing; lower one or more bracts conspicuous; scales ovate-lanceolate, 

 cuspidate or short awned, yellowish brown with sharply defined 

 lighter midvein and very narrow hyaline margins ; perigynia ovate, 

 plano-convex, 3.25 mm. long, 1.5 mm. wide, several-many nerved 

 dorsally, prominently few-nerved ventrally, rounded and short 

 stipitate at base, narrowly margined (serrulate above) from base, 

 contracted into a slender beak half the length of the body, the beak 

 yellowish brown tinged, obliquely cut dorsally and hyaline at ori- 

 fice; achenes lenticular, jointed with the slender style; stigmas 2. 



Pine forests. Transition Zone; Pacific Grove, Monterey County, California. 



72. Carex preslii Steud. 



Presl's Sedge. 



Fig. 748. 



Carex preslii Steud. Synops. Cyper. 242. 1855. 

 Care.v multimoda Bailey, Bot. Gaz. 21: 5. 1896. 



Densely cespitose, the culms erect, slender, 2.5-7 dm. high, light 

 brownish at base, roughened above. Leaf-blades fiat, 1.5-4 mm. 

 wide ; head 12-20 mm. long, 6-10 mm. wide, the spikes 3-8, gjaiae- 

 candrous, aggregated or the lower somewhat separate, ovoid or 

 suborbicular, 5-8 mm. long and slightly narrower, rounded at apex, 

 the lateral rounded and the terminal short-tapering at base, 10-25- 

 flowered ; bracts little developed ; scales ovate, sharp pointed, shorter 

 than the perigynia, reddish brown with lighter midvein and narrow 

 hyaline margins ; perigynia ovate, with spreading tips, distended by 

 the thick achene, 3.5 mm. long, 2 mm. wide, green or yellowish 

 brown tinged in age, strongly winged, rounded at the base, nerve- 

 less ventrally or obscurely nerved, abruptly contracted into the 

 yellowish brown tipped beak 1 mm. long, the erect teeth closely 

 contiguous; achenes lenticular, jointed with the slender style; 

 stigmas 2. 



Mountains. Canadian and Iludsonian Zones; Montana west to British Co- 

 lumbia and Oregon. Type locality: Nootka Sound. 



73. Carex pachycarpa Mackenzie. 



Thick-fruited Sedge. 



Fig. 749. 



Carex adusta congesta W. Boott in S. Wats. Bot. Calif. 2: 238. 1880. 



Carex liddoni incerta Bailey, Bot. Gaz. 13: 88. 1888. 



Carex pachycarpa Mackenzie, Bull. Torrey Club 43: 616. 1917. 



Culms 3-6 dm. high, obtusely triangular, smooth. Leaf-blades 

 2.5—1 mm. wide; head 1.5-2.5 cm. long, globose or short ovoid, 

 the spikes 5-8, gynaecandrous, closely aggregated, ovoid, 6-10 

 mm. long, 6-9 mm. wide, the 10-20 perigynia appressed, the 

 beaks not spreading ; bracts inconspicuous ; scales ovate, acute 

 or subcuspidate. shorter than perigynia, light reddish-brown 

 with sharply defined lighter midvein and hyaline margins; peri- 

 gynia ovate, plano-convex, thick, 5 mm. long, 2 mm. wide, many 

 striate dorsally, finely many striate ventrally, narrowly mar- 

 gined, serrulate above, contracted into the slender bidentate beak 

 half length of body, the apex slender, reddish-tinged, obliquely 

 cut dorsally and hyaline at orifice; achenes lenticular, jointed 

 with the slender style ; stigmas 2. 



Mountains of Oregon and northern California, extending south in the 

 .Sierra Nevada to Tulare County; Transition Zone. Type locality: Big Tree 

 Road. Silver Valley, California. 



