254 JUNCACEAE 



(usually 2 to 6) -flowered in a short sparingly branched panicle, exceeding the 

 very short involucral bract ; perianth pale, segments of equal length, narrow, 

 acuminate, broadly scarious-margined, 2 lines long ; styles long ; capsule equaling 

 the perianth, triangular ovate, obtuse, mucronate. 



Crest and eastern side of the Sierra Nevada from Mariposa Co. north. New 

 Mexico, Colorado and Nebraska north to Saskatchewan. 



Locs. — Mono Lake, BoJander 6029; Kennedy Mdw., Tuolumne Co., A. L. Grant 125, 448a; 

 Sonora Pass, A. L. Grant 272; ne. Modoc Co., Manninrj 441. 



Eef. — JuNCUS LONGiSTYLis Tory. Bot. Mex. Bound. 223 (1859), type loc. "Copper Mines," 

 New Mexico, Bigelow. 



19. J. latifolius Buch. (Fig. 42d, e.) Similar to J. longistylis ; leaves nar- 

 rowly linear-lanceolate, 2 to 31/2 lines broad, 2 to 5 inches long; ligules absent; 

 heads 6 to 10-flowered, in a loose simple few-headed panicle. 



Sierra Nevada from Tulare Co. north to Siskiyou Co. ; also Oregon and Wash- 

 ington. ]\Iore ample material may show that this is better disposed as a variety 

 of J. longistjdis. 



Loes. — Yosemite Valley, Bolander 6035; Sonora Pass, A. L. Grant 272; Tallac, Jepson 

 8081 ; Pilgrim Creek. McCloud Flat, Goldsmith 1 ; Medicine Lake, Goldsmith 30 ; Goosenest 

 foothills, Butler 872 (leaves very narrow). 



Eefs. — JuNCUs LATiFOLR's Bucli. Monogr. .Tunoae. 425 (1890). J. longisti/lis var. lati- 

 folius Engelm. Trans. St. Louis Acad. 496 (1868), based on spms. by Bolander from Yosemite 

 Valley (6035), upp<'r Tuolumne Eiver, and east slope of the Sierra Xevada. J. orthophyllus 

 Gov. Contrib. V. S. Nat. Herb. 4:207 (1893). 



20. J. supiniformis Engelm. Early leaves elongated and capillary, floating, 

 pale green, 1 to 2 feet long; stems low, erect, terete, shorter than the subterete 

 cauline leaves ; ])aniele simple, its 3 to 6 small heads about 5-flowered ; perianth 

 segments brownish, narrowly lanceolate, acute, nerved, lio to 2 lines long. 



In ponds, Mendocino and Humboldt cos. North to Washington. 



Eeolog. Note. — "In spring these ponds [at Mendocino City] are completely covered with 

 the pale green capillary leaves of this species, 1 or 2 feet long. As the water recedes with the 

 advancing dry sea.son, the erect flowering stems begin to form, and a little later the vestiges 

 of the decayed vernal leaves cover the remaining mud with grayish spiderweb like filaments. ' ' — 

 H. N. Bolander. 



Locs. — Mendocino coastal plain, Bolander 4767b; Humboldt Co. (ace. Buchenau in Engler, 

 Pflzr, 436:174). 



Ref. — JuNcrs SUPINIFORMIS Engelm. Trans. St. Louis Acad. 2:461 (1868), type loc. Mendo- 

 cino City, Bolander 4767. 



21. J. mertensianus Bong. (Pig. 42f, g.) Stems very slender, compressed, 

 from slender matted rootstocks, 3 to 6 (or 11) inches high; leaves very narrow, 

 rather flattened, less than 1 line wide, finely but obscurely ribbed by transverse 

 septa, tlie sheaths with ligules : heads solitary, densely many-flowered, dark brown ; 

 perianth 1 to 1^ ■> lines long, the lanceolate narrowly acuminate segments equaling 

 the obtuse obovoid capsule; anthers usually shorter than the filaments; seeds 

 obliquely obovate, apiculate at apex, stipitate at base. 



Higher mountains, 4000 to 11,000 feet: San Bernardino Mts. ; Sierra Nevada 

 north to Modoc Co., thence west to Del Norte Co. North to Alaska and east to 

 Colorado. 



Locs. — Mill Creek Falls, San Bernardino Mts., Parixli 2522; Mt. Silliman, Ealph Happing 

 425; Mono Pass, Bolander 6039; Herring Creek, Tuolumne Co., A. L. Grant 108; Heather 

 Lake, El Dorado Co., Jepson 8169; Sonora Pass, A. L. Gra>tt 310, 418; ne. Modoc Co., Man- 

 ning 46(">; Ash Creek, Mt. Shasta, M. S. Baker; Lake Barle, Del Norte Co., Davy. Unalaska, 

 Jepson 92, 170, 



Eefs. — JuNcus iiERTENSiANTS Bong. Mem. St. Petersb. ser. 6, 2:167 (1833), type loc, 

 Sitka, Alaska, Mcrtens; Buch. in Engler, Pflzr, 436:201, fig. 96 (1906). 



22. J. nevadensis Wats. (Fig. 43a-c.) Resembling slender forms of J. 

 phaeocephalus ; stems very slender, somewhat compressed, from a slender creeping 



