410 CYPEKACEiE. [Cyperus. 
capitatus, Poir. Encycl. vii. 246, an Pojer, Hort. Maur. 379 ? Maris- 
cus Kraussii, Hochst. 
Mauritius, Sieber , Herb. ii. No. 67. Rodriguez, Bouton ! Balfour ! Natal, 
Madagascar, Tropical Africa, Tropical Asia. 
11. C. microlepis, Baker. Annual, densely tufted. Stems 4-6 
in. long, very slender, triquetrous. Leaves filiform, nearly as long as 
the stem. Clusters 3-6, simple or forked, crowded in a terminal 
umbel, bracteated by one short and one long filiform leaf ; spikelets J-J 
in. long, 6-12-flowered. Glumes oblong, obtuse, pale brown, glossy, 
obscurely cuspidate, little imbricated, in. long, furnished with a 
distinctly 3-ribbed green keel. Achene obovoid-triquetrous, nearly as 
long as the glume. 
Mauritius, Grey ! Riviere de Moka, Horne ! Endemic. Glumes very like those 
of G. Iria ; but habit very different. 
12. C. compressus, Linn. ; Kunth , Enum. iii. 23. Annual, densely 
tufted. Stems 3-12 in. long, triquetrous. Leaves linear, £ in. broad, 
shorter than the stems. Clusters several in a simple umbel, bracteated 
by 4-6 long linear leaves, the outer clusters on 1-3 in. peduncles; spike- 
lets lanceolate, f in, long, 10-30-flowered. Glumes greenish-drab or 
tinged with brown, ovate-navicular, acute, much imbricated, in. 
long, with numerous ribs on the broad green keel. Achene globose- 
triquetrous, bright-brown, a third as long as the glume. C. brachiatus, 
Poir. Encycl. vii. 259. 
Mauritius and Seychelles, common in damp places. Spread through the tropics 
of both hemispheres. 
13. C. tuberosus, Rottb . Gram. 98, t. 7, fig. 1. Perennial, stoloni- 
ferous, the stems tuberous at the base, triquetrous, \-l foot long. Leaves 
linear, as long as the stem. Clusters 6-10 in a simple umbel, subtended 
by 3-4 long linear leaves, the outer clusters on 1-2 in. peduncles ; 
spikelets -f-J in. long, 15-20 flowered. Glumes bright red-brown, much 
imbricated, subacute, with a greenish border and narrow green keel, 
24 " iV i n - long. Achene obovoid-triquetrous, dark brown, half as long 
as the glume. Kunth , Enum. ii. 50. C. stoloniferus, Vahl. 
Mauritius, in sands of the shore, near Fort George, etc. Also Tropical Asia and 
Tropical Africa. 
14. C. rotunduSjLeVm.; Kunth , Enum. ii. 59. Perennial, abundantly 
stoloniferous, the stems tuberous at the base, triquetrous, It. long. 
Leaves linear, | in. broad, shorter than the stem. Clusters 4-6 in a 
simple umbel, bracteated by 2-3 linear leaves, the outer clusters on 
1-2 in. peduncles ; spikelets f-1 in. long, 20-30-flowered. Glumes 
ovate-navicular, i n - long, bright red-brown, obtuse, much imbricated, 
showing 5-7 distinct ribs. Stigmas much protruded from the glumes. 
