LuzuLA. CLVI. JUNCACE^. 561 



of the terminal, di-trichotomous panicle; perianth segments lanceolate, margins 

 scarious, rather shorter than the acuminate capsule, R. L Olney ! to N. Y., 

 Torrey. Root fibrous. Stems erect, 6 — 9' high, wiry. Bracts much shorter 

 than the rather diffuse, thin panicle. 



* * * Leaves not articulate, radical. 



11. J. Greenii. Oakes & Tuckerman. (J. squarrosus. MuJd.7) 



Scape tall, subterete, striate; Ivs. filiform-setaceous, subterete, scarcely 

 channeled, shorter than the scape, with sheathing bases; panicle subumbellate, 

 5-rayed ; bracts setaceous, one of them very long ; jis. single, approximate ; sep. 

 and pet. ovate, acute, twice shorter than the triangular-acute, shining capsule. — 

 Wet grounds, R. Isl. and Mass., Dr. Truman Richard '. The handsomest of 

 the rushes, about 2f high, rigid, strict. Leaves all radical. If or more high. 

 Panicle 2—3' long, one of the bracts twice longer, the other twice shorter. 

 Capsule 2" long, of a glossy mahogany color. Seeds very minute, linear-oblong. 



12. J. TENUIS. Willd, Slender Rush. 



St. scape-like, slender, erect ; Ivs. subradical, linear-setaceous, shorter than 

 the stem ; bracts 2—3, much longer than the panicle ; Jls. single, approximate, 

 subsessile ; perianth segments acuminate, longer than the subglobose-triangular 

 capsule. — A very common rush, about foot-paths and roadsides, and in fields 

 and meadows, U. S. and Can. Stems wiry, 6 — 24' high. Leaves very narrow, 

 3 — 8' long. Panicle subfasciculate, 5 — 10-flowered, varying to subumbellate 

 and 20 — 30-flowered, the rays very unequal. June, July. 



* * * * Leaves Jlattish, channeled, cauline and radical. 



13. J. BUPONius. Toad Rush. 



St. dichotomous above ; Ivs. grooved, subsetaceous ; Jls. oblong, subsoli- 

 tary, sessile, unilateral. — A small, coespitose species, common in wet grounds, 

 ditches, &c. Stems numerous, 3 — 8' high, with a large, few-flowered panicle 

 at top. Leaves tew, 2 — 3' long. Perianth segments twice as long as the ovary. 

 July, Aug. 



14. J. BULBosus. (J. uliginosus. Sibthorp.) 



St. leafy, very slender, compressed ; Ivs. mostly radical, linear-setaceous, 

 shorter than the stem ; panicle small, few-flowered, subtrichotomous, longer than 

 the bracts; Jls. about in 3s; scp. and pet. equal, acute, incurved, rather shorter 

 than the subglobose, obtuse capsule. — A common rush, in salt marshes, N. J. to 

 the Arctic Sea, usually with dark green foliage and brown capsules. Stems 

 tufted, erect or decumbent and stoloniferous, about If in length, tough and 

 wiry. Leaves 3 — 8' long. Bracts 6 — 12". Flowers 12 or more, at length 

 brown or blackish. July, Aug. — It makes good hay. 



15. J. TiUFiDu.s. Tlirce-lcavcd. Rush. 



S/. sheathed at base; //.solitary, linear-setaceous near the top; sheaths 

 ciliate; hracts foliaceous, long, grooved. — Heads about 3-flowered, terminal. 

 White Hills, N. H., Biv. Stems crowded, thread-like, if high. Radical leaves 

 1 — 2, very short. The cauline leaf resembles the 2 bracts, apparentlv forming 

 with them a foliaceous, 3-bracted involucre. July. 



16. J. MARIGIN'ATUS. RoStkoW. 



St. compressed; Ivs. flat, smooth, gramineous; panicle corymbo.se, .simple, 

 proliferous ; y/.s. in capitate clusters, triandrous; perianth about as long as the 

 obtuse capsule, the sepals and bracts somewhat awned. — In low grounds, Mass. ! 

 N. Y. to Car. Stems 1 — 3f high. Radical leaves numerous, sheathing; cau- 

 line 1 or 2. Panicle consisting of several globose, 3 — (J-flowered heads both 

 pedunculate and sessile, longer than the erect bracts at base. Sepals edged 

 with dark purple, unequal. Aug. 



2. LUZt^LA. DC. 



Italiiin lucciola, n plow-worm; from the dew glistening upon it^ flowers. 



Perianth persistent, ])ibracteate at base; stamens G; capsule 1- 

 celled, 3-seeded ; seeds fixed to. the bottom. — Stem jointed^ leafy. Lvs. 

 Jlat., ^I'rass-l/kr. frencrnlly j)f/(>^r. Fls. tcnninal. 



