THE GENUS CAREX IN CALIFORNIA 



31 



VIII. Paniculate Kunth. Densely or loosely cespitose. Culms not flattened. 

 Opaque part of leaf-sheaths strongly red-dotted. Spikes numerous, small, 

 androgynous or pistillate, but never gynaecandrous, the lower compound or 

 decompound. Bracts usually inconspicuous. Perigynia thick, high convex on 

 the dorsal and often somewhat convex on the ventral face, brownish or chestnut 

 in age, ascending or spreading, coriaceous, spongy at base, stipitate, narrowly 

 margined, more or less nerved, conspicuously rough-beaked, the beak bidentate. 

 Achenes lenticular. Style jointed with achene, deciduous, its base more or less 

 thickened. Stigmas 2. 



17. C. diandra Schrank. Loosely cespitose, the culms 3-7 dm. high, slender, 

 sharply triangular, the sides convex; leaf-blades 1.25 mm. wide, canaliculate at 

 base; sheaths not copper-colored at the mouth; head 2.5-5 cm. long, somewhat 

 compound, the lower spikes more or less separated; scales nearly equaling perigynia, 

 acute, brownish with lighter midvein and hyaline margins; perigynia strongly 

 convex dorsally, low convex ventrally, dark chestnut, sharp edged but not margined, 

 shining, smooth, hard, nerveless on inner face except at base, nerved on outer face, 

 round-truncate and stipitate at base, contracted into a flat bidentate beak nearly 

 length of body, spreading at maturity. 



Type Locality : Southern Bavaria, Germany. 



Wet meadows from Newfoundland to New 

 Jersey westward to Yukon, Colorado and British 

 Columbia, and very local in Tulare and San 

 Bernardino Cos. , California; widely distributed in 

 Eurasia and recorded from New Zealand. 



Locs.: Herkebraths Meadow, San Bernardino Val- 

 ley, Parish 4600, April 13, 1900; Oriole Lake, Tulare Co., 

 Dudley. 



Refs.: Cabex diandra Schrank, Acta Acad. 

 Mogunt. 49 (1782); Kuk., in Engler, Pflzr. 420 : 175, f. 

 28, A-D (1909). C. teretiuscula Good. Trans. Linn. Soc. 2: 

 163, pi. 19, f. 3 (1794), type from Norwich, England. C. 

 Bernardino. Parish, Bull. S. Cal. Acad. 5: 24, pi. 21 (1906), 

 type from San Bernardino Valley, Cal., Parish 4600. 



18. C. Cusickii Mackenzie. (Fig. 10). More 

 densely cespitose than C. diandra, the culms 

 sharply triangular, stout, 7-12 dm. high, rough 

 above, much exceeding the leaves; leaf-blades 2.5- 

 6 mm. wide, flat with slightly revolute margins, 

 the sheaths strongly red-dotted; head 4-8 cm. 

 long, 1-2 cm. wide, decompound, the lower 

 branches separated, the spikes ovoid, 3-6 mm. 

 long, 2.5-4 mm. wide; scales chestnut-tinged with 

 lighter midvein and hyaline margins; perigynia 3- 

 4 mm. long, 1.5 to 1.75 mm. wide, dark brownish 

 black, very thick-nerved- dorsally, lightly nerved 

 at base ventrally, strongly convex dorsally, slightly 

 convex ventrally, spreading in age, truncate and 

 short stipitate at base, abruptly beaked, the beak 

 setulose-serrulate, shallowly bidentate, about 

 length of body of perigynium. Fig. 10. Carex Cusickii Mackenzie. 



Type Locality: Head of Burnt River, east a> infloresce nce, X 1; ft, scale, x 8; 



Oregon (Cusick 1331). c, perigynium, X 8. 



