18 THE GENUS CAREX IN CALIFORNIA 



DIAGNOSES OF THE SPECIES 



WITH INDICATIONS OF RANGE, CITATIONS 



OF LOCALITIES, AND REFERENCES TO THE 



LITERATURE 



I. Inflate Kiik. Cespitose, the rootstocks elongate. Leaf-blades filiform. Spike 

 solitary, ovoid, androgynous, densely flowered, bractless. Perigynia inflated, 

 the walls very thin, slightly nerved, sessile, the smooth beak hyaline-tipped, 

 obliquely cut, in age bidentulate. Achenes triangular. Style very slender, 

 straight, jointed with achene, deciduous. Stigmas 3. 



1. C. Engelmannii Bailey. Rootstocks slender, tough, elongate, the culms 

 5-20 cm. high, smooth, brownish tinged at base; leaf-blades filiform, 0.3-0.5 mm. 

 wide, 3-15 cm. long, smooth or nearly so, the sheaths loose, many-striate; spike 10- 

 15 mm. long, 6-10 mm. wide, the lower % pistillate with 15-40 ascending perigynia; 

 scales 1 -nerved, acute to cuspidate, all except lower shorter than perigynia; perigynia 

 ovoid, 4.5-5 mm. long, 2.25 mm. wide, rounded at base, inflated, nerveless, glabrous, 

 chartaceous, tapering at apex into a minute smooth beak, 0.5 mm. long; achenes 

 1.25 mm. long. 



Type Locality: Colorado, probably near Colorado Springs (Engelmann). 

 Southern Sierra Nevada. Colorado to Washington. 



Locs.: Kaweah Peaks, Dudley 2215; Kokopo Creek, Dudley 2447; Chagoopa Meadows, 

 Dudley 2272; Camp Alta, DudUy 989. 



Refs.: Carex Engelmannii Bailev, Proc. Am. Acad. 22: 132 (1886); Kiik. in Engler, Pflzr. 

 420; 96 (1909). C. paddoensis Suksdorf, Allg. Bot. Zeit Schr. 12: 43 (1906), type from Mt. Paddo 

 (Adams), Washington. 



2. C. Breweri Boott. (Fig. 1). Rootstocks tough, elongate, the culms 1-2.5 

 dm. high, smooth, brownish tinged at base; leaf-blades filiform but rigid, 5-10 cm. 

 long, less than 1 mm. wide, the sheaths loose, many striate and scarious; spike 10-15 

 (or 20) mm. long, 6-10 mm. wide, the upper third staminate; scales ovate, short- 

 acuminate, 3-nerved, narrower and shorter than perigynia; perigynia broadly ovoid, 

 5 mm. long, 3.5 mm. wide, rounded at base, strongly inflated, nerveless, glabrous, 

 the walls very thin, abruptly beaked, the smooth beak 0.5-1 mm. long, obliquely 

 cut, at length bidentulate; achenes 2 mm. long. 



Type Locality: Mt. Shasta, California (Brewer 1422). 



High Alpine peaks, Washington and Oregon, and south as far as Mt. Whitney 

 on the higher summits of the Sierra Nevada in California. 



Locs.: Mt. Shasta, Brewer 1391, 1392, 1422, Hooker & Gray, Pringle, Goodale, Copeland 3517, 

 Jepson; Mt. Dana, Brewer 1863, Bolander 2176, Congdon; head of San Joaquin, Brewer 2831; James 

 Peak, Brewer 2176; Sawtooth Peak, Tulare Co., Hall & Babcock 5680; Mt. Whitney, Coville & 

 Funston 1669, Jepson 1085; Alta Meadows, Tulare Co., Geo. B. Grant; Alta Peak, Tulare Co., Dudley 

 1532 (in part), 1536. 



Refs.: Carex Breweri Boott, 111. Carex 4: 142, pi. 455 (1867); W. Boott in Bot. Cal. 2: 229 

 (1880); Kiik. in Engler, Pflzr. 420; 96 (1909). 



II. Athrochl^n^: Holm. Cespitose or with creeping rootstocks. Leaf-blades nar- 

 row. Spike solitary, androgynous, bractless, narrow, densely many-flowered. 

 Pistillate scales soon falling. Perigynia slenderly strongly stipitate, widely 

 spreading or the lower reflexed, obscurely triangular, nerveless, membranaceous, 

 long-beaked, the beak obliquely cut, becoming bidentulate. Achenes usually tri- 

 angular, slightly apiculate. Style very slender, straight, slightly enlarged 

 upward, jointed with achene, deciduous. Stigmas 3 or occasionally 2. 



