OEDER CXXXIV. — JUNCACEJE. 545 



b. Plants with leaves. 



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

 Leaves channeled, linear-subulate, concave, the radical ones shorter 

 than the stem, cauline ones longer. Flowers 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. dichot'omus, (Ell.) Stem erect, glabrous, sometimes naked. 

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

 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. bufo'mus, (L.) Stem terete, dichotomous toward the summit. 

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

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

 the 3 exterior longest. — -0. March — May. On the coast. 3 — 6 in. 



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

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

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

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



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

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

 % . May — June. Damp soils. Common. 2 — 3 ft. J. aristulatus. 



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

 linear, flat. Flowers in lateral and terminal fascicles. Stamens 3. 

 Leaves of the perianth subulate, acute, the interior longest. — 1£ . 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 trichoto 

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

 Statnens 3. — 2f. 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. echina'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. — If. May — Aug. Wet 

 soils. Very common. 2 feet. 



Genus II.— LU ZULA. D. C. 



(Said to be derived from hiciola, aglow-worm ; because its flowers sparkle by moon- 

 light.) 



Perianth spreading, glumaceous. Stamens 6. Stigmas 3. 

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



1. L. melanocae'pa, (Desv.) Leaves broad-linear, flat ; sheaths smooth. 

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

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

 Stamens short. — If. Car. northward. 



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

 Bhorter than the stem, very hairy at the throat of the sheath. Flowers 



