558 OKDEE CXLI. CYPEEACE^. 



2. K. pu'mila, (Mich.) Stern erect, triquetrous, glabrous. Leaves 

 subulate, expanding ; involucre usually 3-leaved, unequal. Flower>< in 

 a terminal, nearly globose head. Glumes none. Pateoe 2, compressed. 

 Flowers diandrous. — If. August — Dec. Damp soils. Very common. 

 3 — 6 inches. 



3. K. macula'ta, (Mich.) {Lipocarpha maculata, Kunth.) Stem tri- 

 ][uetrous, glabrous. Leaves subulate. Floivers usually in 3 heads. 

 Glume 1, lanceolate, cuneate. Palece 2, unequal, the exterior one short- 

 est. Flowers monandrous. — li. August — Oct. 3 — 5 inches. 



Tribe IL— SCIRTE^. 



Flowers perfect. Spikes many-flowered. Perianth of bris- 

 tles, hairs or none. 



Genus IV.— ELEOCH'ARIS. Br. 3—1. 

 (From 7t£los, a marsh, and cJiairo, to delight) 



Spikes many-flowered. Scales imbricate, some of the lowest 

 not flower-bearing. Cahjx usually 6 bristles. Stamens 3. 

 Style trifid, dilated at the base. Culm sheathed, leafless, 1- 

 spiked. 



1. E. acicula'ris. (Scirpus trichodes, Ell.) Stem setaceous, glabrous. 

 Spikes ovate-lanceolate. Glumes ovate-lanceolate, nearly white. Seed 

 3-angled, ribbed. — ^. June — July. Low country. 6 — 8 inches. 



2. E. sim'plex, (Dietr.) (Scirpus simplex, Ell.) Stejn erect, glabrous, 

 with a sheath at the base. Spike ovate. Glumes obtuse, nearly white. 

 — If. Through the summer. Wet places, 8 — 13 inches. 



3. E. tor'tilis, (Sehult.) Cidm cespitose, filiform, triangular ; in dry- 

 ing, twists spirally. Scales ovate, obtuse, 1 -nerved ; keel green. Setce 

 6. — Geo. and Car. 



4. E. TUBERcuLo'sA, (Br.) (Scirpus tuhercidosa, Mich.) Stem erect, 

 columnar, sheathed at the base. Spike ovate-lanceolate. Glumes ob- 

 tuse, with scarious margins. Stamens 2. /See(/ striate, with a sagittate 

 tubercle, ^ns^/es plumose. — 2f. July — Aug. Wet soils. 10 — 12 in. 



5. E. filifor'mis, (Kunth.) (Scirpus filiforjnis. Lam.) Stem filiform, 

 terete. Spike cylindrical, oblong, obtuse. Glumes nearly round, — July 

 — Aug, Wet places. 



6. E. vrvifARA, (Link.) Culm cespitose, filiform, sheathing at the 

 base. Spikes solitary, elliptic-oblong, obtuse, many-flowered, often vi- 

 viparous ; scales elliptic-ovate. Stamens 3. Setce 5, white. — On the 

 margins of lakes. Carolina and Georgia, 



1. E. palus'tris, (Brown.) (Scirpus palustris, L.) Stem glabrous, 

 striate, lucid, with 2 — 3 sheaths at the base. Spike oblong-lanceolate. 

 Glume obtuse, with the midrib green. — If. April — May. Marshes. 

 1—2 feet. 



8. E. capita'ta, (Brown.) (Scirpus eapitatus, Willd.) Stem, erect, 

 glabrous, inflated, with a short sheath at the base. Spike ovate. Glumes 

 coriaceous, nearly round. Bristles 6. — U- Through the summti. 

 Damp soils. 10 — 18 inches. 



