CYPERACE.E. 567 



linear, glaucous ; heads ollong, blunt, 3-7 -nately clustered, in an unequal umbel, lateral 

 shorter, diverging : involucre long, 5-8-leaved ; spikelets densely approximate-imbricated, 

 rusty or pale, lanceolate, 3-5-flowered, inferior recurved; glumes oblong, bluntish, many- 

 nerved, thrice as long as the furrow, twice as long as the elliptical-3-gonal achenium : wings 

 of the furrow broad, at length disappearing; stamens 3. — Si. t. 9. Rottb. Descr. t. 11. 

 f 2. — Mariscus coriaceus, Mey. Esseq. ! — 2'-4' high ; terminal heads 8"'-10"', fertile 

 glumes about 1"' long. — Hab. Jamaica !, Al. Wils., March ; Antigua !, Wullschl., Domi- 

 nica !, Imr., Barbadoes ; [Cuba ! and Mexico to Brazil ! ; trop. Africa to the Cape]. 



30. C. Meyenianus, Kth. Rhizoma short ; stem 3-angular, glabrous ; leaves linear, 

 flat ; spikes slender, umbellate : involucre long, 5-12-leaved ; spikelets spreading, distinct, 

 pale or brownish-variegated, linear, 5-3-flowered ; glumes oblong-lanceolate, bluntish, 

 many-nerved, twice as long as the furrow, half as long again as the oblong-3-gonal ache- 

 nium : furrows narrowlv winged; stamens 3. — Mariscus, Ns. & ! — l'-li high; spikes 

 l"-li"» glumes H"'-li'"" long.— Hab. Jamaica!, Wullschl.; [Venezuela !, Brazil!]. 



** Spikes umbellate or clustered: spikelets sub distichous. 



31. C. anceps, Liebm. Rhizoma short; stem slender, 3-angular, glabrous: one side 

 channelled ; leaves liuear, flat ; spikes lax, of 16-30 diverging, somewhat distant, subdisti- 

 chous spikelets, unequally umbellate, interior sessile : involucre 4-8-leaved : exterior leaf- 

 lets long, spreading; spikelets lanceolate-linear, rusty-brown, 5-6-Jlowered ; fertile glumes 

 oblong, bluntish, 7-9-nerved, thrice as long as the furrow, half as long again as the ellip- 

 tical-oblong, 3-gonal achenium -. furrows broadly winged : stamens 3. — 1-2' high ; glumes 

 1'" long. — Hab. Jamaica!, Wullschl.; [Cuba]. 



32. C. Mutisii, Gr. Rhizoma short ; stem 3-angular, glabrous : one side channelled ; 

 leaves linear, flat ; spikes slender, of 20-40, spreading, somewhat distant, subdistichous 

 spikelets, unequally umbellate, interior or all sessile : involucre 4-" 9 "-leaved : exterior 

 leaflets long; spikelets lanceolate, rusty-brown, 2-\\-flowered ; fertile glumes oblong, 

 bluntish, 7-nerved, thrice as long as the furrow, twice as long as the oblong, 3-gonal ache- 

 nium: furrows broadly winged ; stamens 3. — Kth. Nov. Gen. t. 66. — Mariscus, Kth. (non 

 Anders.). M. Poeppigianus, Kth. — 1' high; inferior fertile glumes li'" loug.— Hab. 

 Jamaica !, Pd. ; [Mexico, Venezuela !, Peru]. 



33. C. platystachyus, Gr. (n. sp.). Rhizoma short ; stem 3-angular, glabrous, tumid 

 at the base : 2 sides channelled ; leaves linear, flat, equalling the stem ; spikes broadly ob- 

 long, flatfish from numerous, horizontally diverging, subdistichous spikelets, clustered-sub- 

 sessile : involucre long, 5— 8-leaved ; spikelets linear-acuminate, pale or variegated with 

 reddish lines, 5-3flowered ; fertile glumes lanceolate, acuminate with a bluntish point, 

 many-nerved, thrice as long as the furrow, half as long again as the oblong, 3-gonal ache- 

 nium : furrows winged; stamens 3. — Allied to C. oostachyus, Ns. !, in which the spikes are 

 shorter and rounded, the glumes longer and twice as long as the achenium. l'-l$' high, 

 slender; leaves V"-\\'" broad; spikes about 6, 6"'-10'", spikelets 3"'-4"', glumes \\ m 

 long : the nerves of the latter prominent. — Hab. Jamaica !, Al., March, Wullschl. 



34. C. cycloBtachynB, Gr. (n. sp.). Root fibrous; stem slender, 3-angular, glabrous : 

 one side narrow, channelled ; leaves linear, flat ; heads orbicular from spreading and re- 

 curved spikelets, unequally umbellate, central subsessile : involucre long, spreading, 4-6- 

 leaved ; spikelets somewhat distichous, approximate, lanceolate-linear, greenish and pale, 

 Z-A-flowered ; fertile glumes oblong or oblong-lanceolate, bluntish, 7-9-nerved, thrice as 

 long as the furrow, twice as long as the oblong achenium : furrows narrowly winged ; sta- 

 mens 3 ; style 3-partite, exserted. — Allied to C. ovularis, Torr. 12"'-6"' high ; leaves 

 1"'-1A/" broad; heads usually 5, 5"'-6'" diam. : exterior peduncles l"-li" long; spike- 

 lets 20-40, 3'", glumes 14/" long.— Hab. Jamaica !, March. 



*** Spikes clustered (rarely a few peduncled) .- spikelets turned to all sides. 



35. C. flavamariscaa, Gr. Rhizoma shortly creeping ; stems approximate, tumid at 

 the base, 3-quetrous, glabrous ; leaves linear, flat ; spikes shortly oblong-cylindrical, blunt, 

 clustered (rarely a few peduncled) : involucre 3-6-leaved : 1-3 leaflets long, spreading ; 

 spikelets densely approximate, imbricate, lanceolate, yellowish or variegated with brown, 

 2-li-flowered ; fertile glumes ovate-oblong, bluntish, many-nerved, twice as long as 



