ORDER CXXXIV. JUNCACE-C 545 



b. Plants Willi leaves. 



4. J. ten'uis, (Pers.) Ston erect, terete, simple, sometimes naked. 

 Leaves chaimtled, linear-subulate, concave, the radical ones f-hdrter 

 than the stem, cauline ones longer. Floicers in panicles, sessile ; the 2 

 lower leaves of the involucre longer than the panicle. — 2^. April — 

 May. In wet pastures. Common. 10 — 12 inches. 



5. J. dicuot'omus, (Ell.) St€?}i erect, glabrous, sometimes naked. 

 Leaves channeled, filiform, shorter than the stem, sheathing. Flovrrs 

 in dichotomous panicles, solitary, one leaf of the involucre longer than 

 the panicle. Leaves of the involucre nearly equal.— If . April — May. 

 In wet pastures. 1 — 2 feet. 



6. J. bi'fo'mus, (L.) Steyii terete, dichotomous toward the summit. 

 Leaves angled, subulate, concave, sheatliing at the base. Flowers in 

 termirjal panicles, solitary, or by pairs. Leaves of the perianth acute, 

 the 3 exterior longest. — %. March — May. On the coast. 3 — 6 in. 



7. J. biflo'rus, (Ell.) Stem erect, glabrous, leafy. Leaves linear, 

 flat, sheathing. Floiocrs in long panicles. Leaves of the perianth 

 lanceolate, somewhat ferruginous. Stamens 3. — If. May — July. Around 

 ditches and ponds. 2 — 3 feet. /. aristidaius. 



8. J. arista'tus, (Mich.) Ste)7i erect, compressed. Leaves flat, gla- 

 brous, nerved, sheathing at the base. Flowers in terminal panicles. — 

 If. May — June. Damp soils. Common. 2 — 3 ft. /. aristidaius. 



9. J. re'pens, (Mich.) Stein geniculate, compressed, leafy. Leaves 

 linear, flat. Flotvers in lateral and terminal foscicles. Starneiis 3. 

 Leaves of the perianth subulate, acute, the interior longest. — 2f . May 

 —July. Muddy soils. Very common, 6 — 12 inches. 



10. J. acumina'tus, (Mich.) Stem terete, jointed, glabrous. Leaves 

 terete, jointed, with an open sheath at the base. Flowers in triehoto 

 mous panicles. Leaves of the perianth acute, rigid, nearly equal. 

 Stamens 3. — If. March — May. Damp, wet places. 1 — 2 feet. 



11. J. polyceph'alus, (Mich.) Stem compressed toward the base, 

 terete above. Leaves ensiform, jointed, compressed, long. Flowers in 

 panicles, composed of numerous heads. Leaves of the perianth acute, 

 nearly equal. Stamens 3. J- paranotus. 



12. J. echixa'tus, (Muhl.) Stem terete, glabrous. Leaves terete, 

 jointed, sheathing at the base. Flowers in large, terminal heads. Leaves 

 of the perianth subulate, rigid. Stamens 3. — 2f. May — Aug. Wet 

 soils. Very coratuon. 2 feet. 



Genus II.— LU ZULA. D. C. 



(Said to be derived from luciola, .a slow-worm ; because its flowers sfKirkle l>y moon- 



liglit.) 



Perianth spreading, glumaceoiis, Slaincns G. Stif/mas H, 

 Capsule 1 -celled, 3-valved. Seeds 3. 



1, L. melanocar'pa, (Dcsv.) Leaves broad-linear, flat; sheaths sm(v>th. 

 Flowers in lax branches, sub-paniculate; pedicels elongated, slender; 

 bracts incised, dentate ac the apex, glabrous; sepals oblong, mucronate. 

 Stamens short. — 2f . Car. northward. 



2. L. campes'tris, (L.) Stem kafy, terete. Leaves flat, pubescent, 

 ehorter than the stem, very hairy at'the throat of the sheath. Flowcri 



