152 JUNG ACE AE 



pyramidal, long-mucronate, 3-celled. J. balticus montanus Engelm. Mountain 

 valleys: Alaska Calif. -N.M. Neb.- Mont. Plain Subalp. Jl-Au. 



3. J. vallicola Rydb. Stem rather stout, 6-8 dm. high, terete, 2-4 mm. in 

 diameter; sheaths at the base short, dark brown, bladeless; sepals narrowly 

 lanceolate, slightly if at all scarious on the margins, about 6 mm. long; petals 

 broader and shorter, with broad scarious margins, about 5 mm. long; capsules 

 short-ovoid, obtusish and mucronate, shorter than the petals. J. balticus valli- 

 cola Rydb. Mountain vallevs: B.C. Wash. Colo. Mont. Plain 'Submont. 

 Je-Jl. 



4. J. mexicanus Willd. Stem usually twisted, 3-6 dm. high; sheaths 

 brown, short, except the uppermost, with a blade resembling the stems; inflor- 

 escence open; sepals light brown, 5-6 mm. long, lanceolate, longer than the 

 scarious-margined petals; capsule ovate, triangular, mucronate, equalling the 

 petals. J. compressus H.B.K., not Jacq. Mountains: N.M. Utah Calif.; Mex. 

 L. Son. My-Au. 



5. J. Drummondii E. Meyer. Stems 1-3 dm. high, slender; sheaths brown, 

 short, striate, not inflated; blades reduced, bristle-like, 3-10 mm. (rarely 20 mm.) 

 long; sepals lanceolate, attenuate, 7 mm. long; petals similar but usually slightly 

 shorter; capsule oblong, triangular, obtuse, 3-celled. J. subtriflorus (E. Meyer) 

 Coville. Mountain sides, especially in damp places: Alaska Calif. N.M. 

 Alta. Mont. Alp. Jl-Au. 



6. J. Parryi Engelm. Stem 1-3 dm. high, terete, slender; sheaths brown, 

 the upper with a sulcate blade 5-6 cm. (rarely 8 cm.) long; sepals 5-7 mm. long, 

 longer than the acute, scarious-margined petals; capsule oblong, triangular, 

 3-celled. Mountain sides: B.C. Calif. Colo. Mont. Mont.~Alp. Jl-Au. 



7. J. Hallii Engelm. Stems slender, 2-3 dm. high, terete; sheaths brown; 

 blades of the uppermost leaves 5-15 cm. long; sepals 4-5 mm. long, exceeding the 

 similar petals; capsule dark brown, ovate, triangular, 3-celled, fully equalling 

 the sepals. Mountains: Colo. Mont. Mont. Subalp. Jl-Au. 



8. J. Vaseyi Engelm. Stems tall and stiff, 3-8 dm. high, terete; leaf-blades 

 three-fourths as long as the stem; inflorescence 1-3.5 cm. long, with erect 2-4- 

 flowered branches; sepals and petals 3.5-4 mm. long, green or straw-colored, 

 lanceolate, erect, acute and narrowly scarious-margined; capsule oblong-cylin- 

 dric, obtuse. Moist shores and wet woods: Me. la. Colo. 'Sask. Plain 

 Mont. Je-Au. 



9. J. interior Wiegand. Stems tall, stout, 5-10 dm. high, nearly terete, 

 coarsely grooved; leaves several, with blades one-third as long as the stem, 1-1.25 

 mm. wide; inflorescence large and open, 3-10 cm. long, many-flowered; sepals 

 and petals 3-4 mm. long, nearly equal, lanceolate, very acute, narrowly scarious- 

 margined, erect; capsule oblong, obtuse, imperfectly 3-celled. Dry woods and 

 prairies: 111. Ark. Tex. N.M. -Wyo. Plain Submont. My-Au. 



10. J. arizonicus Wiegand. Stem 4-7 dm. high, terete, or slightly com- 

 pressed, grooved; leaf -blades one-third to one-half as long as the stem, 1 mm. 

 wide; inflorescence many-flowered, 4-7 cm. long, with erect branches; sepals 

 and petals 5 mm. long, lance-subulate, very acute, erect; capsule ovate-oblong, 

 obtuse, triangular above, imperfectly 3-celled. Prairies and plains: Tex. 

 Colo. -Ariz. Son. Submont. Ap-Jl. 



11. J. brachyphyllus Wiegand. Stem stout, 4-5 dm. high, slightly com- 

 pressed, grooved; leaf -blades short, one-fourth to one-third as long as the stem, 

 broad and flat, 1.5-2 mm. wide; inflorescence short, many-flowered, 2-6 cm. long; 

 sepals lanceolate, very acute, straw-colored; petals similar but scarious-mar- 

 gined all around; capsule narrowly oblong, obtuse or retuse. Meadows: Ark. 

 Okla. Ida. Plain Submont. My-Jl. 



12. J. confusus Coville. Stem slender, 4-5 dm. high, light green, slightly 

 grooved; leaf -blades filiform, two-thirds as long as the stem or less, flat or in- 

 volute; sepals and petals lanceolate, acute, straw-colored, with dark stripes on 

 each side, scarious-margined; capsule oblong, a little shorter than the petals, 

 retuse. J. tennis congestus Engelm., in part. Meadows: B.C. n N.M. Neb. 

 Sask. Plain Mont. Je-Au. 



