JUNCACEiE. 245 



Var. monta'nus, Engelm. , has an ovate-pyramidal, 

 angled, and beaked capsule. N.W. 



* * Stem leafy at the base or throughout ; the leaves flat or channelled 

 but never knotted. Panicle terminal. 



4. J. Styg'ius, L. Scape slender, 1-3-leaved below, naked 

 above. Leaves thread-like, hollow, not knotted. Heads 1 

 or 2, of 3-4 flowers, about as long as the dry, awl-pointed 

 sheathing bract. Stamens 6. Peat bogs, Atl. Prov. 



5. J. Greenii, Dakes and Tuckerm. Stem slender, simple, 

 tufted. Leaves nearly terete, deeply channelled on the inner 

 side. Flowers solitary, panicled. The principal leaf of the 

 involucre usually much longer than the panicle. Pod ovoid- 

 oblong, obtuse, longer than the acute sepals. Seeds ribbed, 

 and delicately cross-lined. Wet sandy places. 



6. J. Va'seyi, Engelm. Stem slender, rigid, tufted, leafy 

 below, 12-30 inches high, not branching. Leaves nearly 

 terete, very slightly channelled. Panicle longer than the 

 involucral leaf. Flowers greenish or light brown, few, often 

 1-sided. Pod oblong, retuse, greenish-brown. Wet mea- 

 dows, N.W. 



7. J. Gerard'l, Loisel. (BLACK GRASS.) Stems rigid, 1-2 

 feet high. Panicle contracted, usually longer than the in- 

 volucral leaf. Flowers brown and green. Sepals incurved, 

 as long as the mucronate capsule. Seeds obovate, delicately 

 ribbed and cross-lined. Salt marshes, Atl. Prov. 



8. J. longiS'tyliS, Torr. and Gr. Flowers in heads. 

 Heads few, or rarely single. Flowers greenish with brown 

 lines. N.W. 



9. J. bufO'nius, L. Stem leafy, slender, 3-9 inches high, 

 branching from the base. Panicle terminal, spreading. 

 Flowers greenish, single on the pedicels. Sepals awl-pointed, 

 the outer set much longer than the inner and than the blunt 

 pod. Stamens 6. Ditches along roadsides. 



10. J. ten'UlS, Willd. Stems leafy below, wiry, 9-18 inches 

 high, simple, tufted. Panicle loose, shorter than the slender 

 involucral leaves. Flowers greenish, single on the pedicels ; 

 the sepals longer than the blunt pod. Seeds white-pointed at 

 both ends. Open low grounds. 



