THE GENUS CAKEX IX CALIFORNIA 



45 



Type Locality: '"In Unalaschka," Alaska. 



A widely distributed species extending from the high mountains of Colorado 

 and California northward to the Aleutian Islands. In California it is found in the 

 northern counties. Further north it is an abundant species. It has a wide alti- 

 tudinal range, and individual plants vary very considerably. 



Lees.: Mt. Shasta, Pringle; Sisson, Hall & Babcock 4063; Beebe's Ranch, Humboldt Co., 

 Tracy 3390; Medicine Lake, Goldsmith 28a; Mt. Eddy, Heller 12468; Oro Fino, Siskiyou Co., Butler 

 806; Eureka, Hitchcock; Peter Klink's Meadow, Siskiyou Co., Dudley. 



R.EFS.: Carex pachystachya Cham, ex Steud. Synop. Cyper. 197 (1855). C. festiva Dewey 

 var. pachystachya Bailey, Mem. Torr. Club 1: 51 (1889). C. macloviana D'L'rv. var. pachystachya 

 "Bailey" ex. Kuk. in Engler, Pflzr. 4 2 °: 197 (1909). C. olympica Mackenzie, Bull. Torr. Club 43: 

 610 (1917). 



46. C. abrupta Mackenzie. (Fig. 19). Densely cespitose, the culms 4-6 

 dm. high, slender, erect, smooth; leaf-blades 1.5-2.5 mm. wide; head suborbicular, 

 9-16 (or 17) mm. long, and nearly as wide, the 4-8 spikes densely aggregated, ovoid, 

 5-8 mm. long. 5-6 mm. wide, the 



10-20 perigynia ascending; scales 

 ovate, obtuse, chestnut-brown with 

 greener center and at length hyaline 

 margins; perigynia oblong-lanceo- 

 late, 3.75-4 mm. long, 1.5 mm. wide, 

 soon brownish tinged, margined to 

 the rounded base, the body ser- 

 rulate above, abruptly contracted 

 into the slender beak. 



Type Locality: West Branch 

 of North Fork of Feather River, 

 near Stirling, Butte Co., California 

 (Heller 10820). 



Mountains of Oregon and 

 northern California and extending 

 south throughout the Sierra Nevada 

 in California and in the higher 

 southern mountains. 



Locs.: Samoa, Humboldt Co., Tracy 873; Modoc Co., Manning 952 (in part); Dinsmore's 

 Ranch, Humboldt Co., Tracy 4104H; San Jacinto Peak, Reed 2499; Mt. San Gorgonio, Geo. B. Grant 

 6403; Bluff Lake, San Bernardino Mts., Benton; Round Valley, San Jacinto Mts., Hasse; Bear Valley, 

 Abrams 28.56, Parish 1783; Salmon Creek, Tulare Co., Hall & Babcock 5162 (in part); Big Trees, 

 Calaveras Co., Hillebrand 2321 (in part) ; Ebbetts Pass, Brewer 2024, 2075; Hot Springs Valley, Jepson 

 4101 ; Mt. Dana, Bolander 5069; Yosemite, Bolander 6214; Truckee River, Nevada Co., Dai'y; Stirling, 

 Butte Co., Heller 10820; Mt. Tallac, Abrams 4S48; Chagoopa Creek, Tulare Co., Dudley 226S; Lem- 

 mon 4S8; Tuolumne Soda Spgs., Congdon; Echo Lake, Brainerd 193; Strawberry Creek, Brainerd 

 226 (in part); Meisners, El Dorado Co., Brainerd; Slippery Ford, Brainerd 205 (in part) ; Poison 

 Meadow, near Big Arroyo, upper Kern River, Jepson 1131; Truckee, Hitchcock 356 (in part); Yosemite, 

 Hitchcock; Stanislaus Forest, Alpine Co., Eggleston 9427, 9490; Bloody Canon, Mono Co., Ware 2715c 

 (in part); Strawberry, Tuolumne Co., A. L. Grant 109. 



Ref.: Carex abrupta Mackenzie. Bull. Torr. Club 43: 618 (1917). "C. nervina Bailey," 

 Parish, Bull. S. Cal. Acad. 5: 26 (1906). "C. festiva stricta Bailey," Parish, 1. c. 53, in part. 



47. C. mariposana Bailey. Densely cespitose, the culms 2.5-6 dm. high, 

 slender, smooth; leaf-blades 2-3 mm. wide; head oblong or ovoid, 2-3.5 cm. long, the 

 spikes 4-12, the upper approximate, the lower 1-3 slightly separate, ovoid or oblong- 

 ovoid, 8-12 mm. long, 4.5-7 mm. wide, the 10-20 perigynia closely appressed; scales 

 ovate, acute, reddish with lighter center; perigynia narrowly ovate, 5 mm. long, 

 1.75 mm. wide, green or in age straw-colored, narrowly winged to the rounded 

 base, serrulate to middle, tapering into slender beak li length of body. 



Type Locality: Tuolumne Meadows, California (Jepson 4176). 

 Sierra Nevada from Shasta Co. to Tulare Co., and in the higher southern 

 mountains. 



Fio. 19. Carex abrupta Mackenzie, 

 a, inflorescence, X 1; b, scale, X 9; c, perigynium, X 9. 



