272 



JUNCACEAE (rush FAMILY) 



574. 



574. J. dichotomus. 

 Inflorescence x %. 



575. J. setaceus. 

 Inflorescence x %. 

 Seed X 25. 



beaked light mahogany-colored obscurely 1 -celled cap- 

 sule ; anthers nearly as long as the filaments. — Low 

 sandy gi-ounds, L. I. to Fla. (Trop. Am.) Fig. 



Var. platyphyllus Wiegand. Leaves 

 flat or merely involute as in ,/. tenuis ; 

 auricles less cartilaginous, often nearly 

 scarious ; cyme loose. — Along the 

 coast, Mass. to Tex. 



10. J. setaceus Rostk. Scape slen- 

 der (0.3-1 m. high) ; cyme loose, rather 

 few-flowered ; flowers greenish (3—4 

 mm. long) ; sepals and petals lanceo- 

 late, sharp-pointed, especially the 3 

 shining sepals ; capsule beak-pointed, 

 greenish or light brown ; anthers as 

 long as the filaments ; style conspicu- 

 ous ; seeds (0.(3-0.8 mm. long) irregu- 

 larly obconic, long-stipitate, ribbed 

 and cross-lined. — Low usually brack- 

 ish ground, Del. and Mo. to Fla. and La. June-Sept. Fig. 575. 



11. J. Vaseyi Engelm. Stems rigid (2.5-8 dm. high), den.sely tufted ; leaves 

 nearly terete, very slightly channeled on the inner side ; cyme 1-4 cm. long, 

 often longer than the involucral leaf ; flowers few, often one- 

 sided ; capsule oblong, greenish ; sepals lanceolate, acute, ap- 

 pressed ; anthers as long as the filaments ; style very short ; 

 seeds slender (1 mm. or more long), the tails half as long as 



the dark body. — Damp thickets, shores, etc., 

 n. N. B. to Sask., s. to centr. Me., n. N. Y., 

 Mich., 111., la., and Col. July-Aug. Fig. 

 576. 



12. J. oronensis Fernald. Similar; of 

 paler straw-color throughout ; the inflores- 

 cence elongate, 2.5-9 dm. long, subdichoto- 

 mous, the flowers secund and distinct along 

 the secund suberect branches ; capsule oblong- 

 trigonous, truncate-emarginate, the sides flat 

 or a little concave toward the tip, much 

 shorter than the sepals ; seeds 1 mm. long, 

 the tails \ as long as the 

 body. — Thickets, Me., local. 

 Fig. 577. 



13. J. Grednei Oakes & 



^ . . ^ „ Tuckerm, Stems rigid (2-8 



Frumng flower X 3. ^^ ^^^^^^^ . ^^^^^^^ ^^^^^^ 



terete, very deeply channeled (almost involute) on the inner 

 side ; cyme 1-G cm. long, usually much shorter than the prin- 

 cipal erect involucral leaf, generally dense, the numerous 

 flowers often one-sided (4-5 mm. long) ; sepals lanceolate, 

 acute, light brown, appres.sed ; anthers as long as the filaments ; 

 style very short; seeds ovoid (0.5 mm. long), ribbed and deli- 

 cately cross-lined. — Sandy or barren soil. Me. to Vt. and N. J. ; 

 locally about the Great Lakes. June-Sept. Fig. 578. 



* * Inflorescence appearing lateral ; the involucral leaf erects 

 similar to and continuing the naked scape ; leaves wanting. 



14. J. balticus Willd., var, littoralis Engelm. Scapes rigid 

 (0.3-1 ni. high) ; cymes loose or dense (1-0 cm. long) ; flowers 

 chestnut-brown with green ; sepals ovate -lanceolate, sharp-pointed, petals 

 obtusish ; capsule ellipsoidal, rather triangular, obtuse and mucn)nate, deep 

 brown ; anthers much longer than the broad filaments ; style about the length 



576. J. Vaseyi. 

 Inflorescence x % 

 Seed X 40. 



577. J. oronensis. 

 Inflorescence x %. 



578. J. Greenel. 

 Inflorescence x %. 

 Seed X 50. 



