156 JUNCACEAE 



1. J. parviflorum (Ehrh.) Coville. Stem erect, terete, 3-5 dm. high; leaf- 

 blades broadly linear, 5-15 cm. long, 5-12 mm. wide, glabrous except the mouth 

 of the sheath; flowers singly or rarely 2 or 3 together; sepals and petals lanceolate 

 or ovate-lanceolate, acute; capsule ovate, 3-gonous, obtuse, exerted. Luzula 

 spadicea parviflora E. Meyer. Meadows, hillsides, and thickets: Greenl. — N.Y. 

 — N.M. — Calif. — Alaska; Eurasia. Mont.—Suhalp. My-S. 



2. J. Piperi Coville. Stem erect, 1-3.5 dm. high; leaves mostly basal, 

 lance-linear, 2-4 mm. wide, glabrous except a few long hairs on the sheaths and 

 margins; inflorescence 5-8 cm. long, nodding, diffuse; flowers soUtary on the 

 branches, rarely 2 or 3 together; sepals and petals about 1.5 mm. long, ovate, 

 acuminate; capsule ovate, acute, exserted. Sandy moraines : Wash. — Mont.— Ore. 

 Alp.—Subalp. Jl-S. 



3. J. glabratum (Hoppe) Sheld. Stems erect or ascending, terete, 2-5 dm. 

 high; leaf -blades broadly linear to lanceolate, 3-10 cm. long, 4-10 mm. wide, 

 glabrous; inflorescence open, ovoid, with branches often divaricate; flowers 

 mostly singly; sepals and petals dark brown, lanceolate, acute; capsule almost 

 black, ovate, acute, equalling the perianth. Luzula glahrata (Hoppe) De.sv. 

 Hillsides and mountains: Alaska — Wash. — -Ida. — -Mont.; Eu. Mont. — Subalp. 

 Jl-Au. 



4. J. comosum (E.Meyer) Sheld. Stem erector ascending, 1-4 dm. high; 

 leaves numerous, pale green; blades linear, 3-10 cm. long, 3-6 mm. wide, glab- 

 rous; heads oblong, 6-7 mm. thick; sepals and petals lanceolate, yellowish brown, 

 acuminate, about 3 mm. long, slightly exceeding the elhpsoid or subglobose 

 capsule. L. cotnosa E. Meyer. Woods and copses: Alaska — Calif. — Colo. — 

 Mont. SubmorU. — Mont. My-Jl. 



5. J. intermedium (Thuill.) Rydb. Stem slender, 2-5 dm. high; leaf -blades 

 5-10 cm. long, 1-4 mm. wide; inflorescence with erect or strongly ascending 

 branches; heads 4-10, globose or oval, about 6 mm. thick, 8-16-flowered; sepals 

 and petals 2.5-3 mm. long, lanceolate, mucronate, brown or reddish, with paler 

 margins; capsule obovate, 3-gonous, obtuse or retuse, nearly equalling [the peri- 

 anth. L. campestris multiflora Celak. Hills and mountains: Greenl. — -N.Y. — 

 N.M.— Calif.— B.C. Submont.—Mont. Je-Au. 



6. J. subcapitatum Rj'db. Stem 3-4 dm. high, glabrous; leaf -blades 

 lanceolate, acuminate, glabrous, 4-10 cm. long, 5-10 mm. wide; inflorescence 

 compact, consisting of 6-10 heads, conglomerate and forming an irregular head; 

 sepals and petals subequal, 1.5-2 mm. long, ovate, acuminate, dark brown, but 

 lighter on the midrib; capsule broadly obovoid, obtuse, shorter than the petals. 

 Mountains: Silver Plume, Colo. Subalp. Au. 



7. J. spicatum (L.) Kuntze. Stem 1-3 dm. high, erect; leaf-blades 4-6 

 cm. (rarely up to 12 cm.) long, 1-3 mm. wide; in florescence spike-like, usually 

 nodding; sepals and petals 2-3 mm. long, lanceolate, aristate-acuminate; capsule 

 broadly ovoid, acute, about two-thirds as long as the perianth. L. spicata DC. 

 Hills "and mountain sides: Greenl. — N.H. — N.M. — Calif.— Alaska; Eurasia. 

 Mont. — Alp. Jl-Au. 



8. J. arcticum (Blytt) Goville. Stem erect, 5-10 cm. high, terete, slender; 

 leaf -blades glabrous, 3-5 cm. long, 2-4 mm. wide; inflorescence spicate, erect, 

 small; sepals and petals 1.5-2 mm. long, lanceolate, fuscous; capsule ovate, 3- 

 gonous, exceeding the perianth. J. nivalis Coville, not L. nivalis Laest. 

 L. arciica Blyth. L. hyperborea minor Hook. Arctic-al])ine regions: Greenl. 

 — Canadian Rockies — Ala.ska; Scandinavia and Spitzbergen. Alp. Jl-Au. 



9. J. hyperboreum (R. Br.) Sheld. Stem 1-2 dm. high, erect; leaf-blades 

 narrow, 5-10 cm. long, 1-2 mm. wide; inflorescence of a single erect head, or if 

 heads 2-3, the lowest erect and the upper sometimes nodding; sepals and petals 

 lanceolate, acute, brown, 2-2.5 mm. long; capsule about three-fourths as long as 

 the perianth, 3-gonous, globose or ovate. L. hyperborea R. Br. Alpine-arctic 

 regions: Greenl. — -N.H. — Canadian Rockies — Alaska; Eu. Alp. Jl-Au. 



10. J. arcuatum (Wahl.) Kuntze. Stem slender, about 1 dm. high; leaf- 

 blades 3-8 cm. long, narrow, 1-1.5 mm. wide, often curved; inflorescence of 2-10 



