544 ORDER CXXXIV. JUNCACE^. 



sumraiL Leaves ensiform, long. Flowers in oblong heads. Bracts 

 round. Sepals fimbriate, longer than the bracts. — Yellow. 2£. July 

 — Aug. Middle Geo. 2 feet. 



3. X. brevifo'lia, (Mich.) Stem erect, compressed toward the sum- 

 mit. Leaves twisted, subulate. Calyx incised, linear. Flowers in glo- 

 bose heads. — Yellow. It- August — Sept. Pine-barrens. Common- 

 12 — 18 inches. 



4. X. jun'cea, (Bald.) Stem erect, terete. Leaves terete, 4 — 8 inches 

 long, fistular. Keel of the calyx slightly toothed — Yellow. If. May 

 — June. Pine-barrens. Southern Geo. 12 — 18 inches. 



X. Baldwiniana, K. 



5. X. bulbo'sa, (Kunth.) Leaves narrow, linear, obtuse, membrana- 

 ceous, glabrous. Peduncles double the length of the leaves ; above 

 striate, sub-triangular. Heads ovate, acute, many-flowered ; scales 

 ovate, convex. Peduncles 2 ft. long, sheathed below. — Yellow. Mass. 

 to Georgia. 



6. X. ambig'ua, (Beyr.) Leaves sword-shaped, linear, acute. Pedun 

 cles 2 — 3 times the length of the leaves, many-angled, compressed, rigid, 

 sheathing at the base, scabrous on the angles. Heads elliptical, many- 

 flowered ; scales obovate, coriaceous. — Yellow. If. 1^ — 2 feet. 



Order CXXXIV.— JUNCA'CE^E. (Rush Family) 



Perianth 6-parted, more or less glumaceous. Stamens 3 — 6, 

 inserted into the base of the segments. Ovary 1 — 3-celled, 1 

 or many-seeded. Style 1. Stiymas generally 3, sometimes 1. 

 Fruit capsular, 3-valved ; dehiscence loculicidal. Herbaceous 

 plants, with fistular or flat channeled leaves. Flowers brown 



Genus I— JUN'CUS. L. 6—1. 

 (From jungo, to join, from ropes being made of it) 



Perianth 6-parted, with 2 bracts at the base, glumaceous. 

 Stamens 6. Capsule 3-celled, 3-valved, many-seeded, dissepi- 

 ments bearing the seeds. 



a. Leaves none. 



1. J. acu'tus, (L.) Stem erect, rigid, hard, with a sheath at the base. 

 Flowers in terminal panicles. Lnvolucre 2-leaved, erect, spinous. Leaves 

 of the perianth lanceolate, acute, the three exterior longest. Capsule 

 obovate, pointed with the persistent style. — Brown. IX. April. Salt 

 marshes. 2 — 3 feet. /. maritimus. 



2. J. effu'sus, (L.) Stem erect, terete, soft, with a sheath at the base. 

 Flowers in compound panicles. Stamens 3. Leaves of the perianth 

 acute, equal, with white margins. Capsule 3-angled. Seed oblong. — 

 If. April — May. Wet soils. Common. 2 — 3 feet. J. communis. 



3= J. seta'ckus, (Ros.) Stem filiform, terete, declining. Flowers in 

 lateral panicles. Leaves of the perianth lanceolate, acute, the outer 

 ones largest. — IX. July. Swamps. 2 — 3 feet. 



