XYRIDACEAE 251 
rowed upward. Petals 3, broadened upward. Androecium of 3 stamen 
anthers 2 Gynoecium 3-carpellary. Fruit a capsule.—Only the fol. 
lowing gen 
1. MAYACA Aubl Moss-like aquatic a the stems copiously leafy. 
Peduncles 1-flowered. Calyx herbaceous. ink, persistent with the 
sepals. Anther with an oblique oe a ae 7 species, in the warmer 
arts of America.—BOG-MOSSES. POOL-MOSSES. 
Pedicels much longer than the leaves: capsule globular or ovoid. 1. M. Aubletii. 
Pedicels shorter than the leaves: capsule ellipsoid. 2. M. fluviatilis. 
l. M. Aubletii Miehx. Stems ~ or matted, 2—20 em. long: leaves approxi- 
mate or densely crowded; blades narrowly 
lanceolate or almost linear 25 
lo 
ns or streams, Coastal Plain, Fla. to 
Tex. and Va. 
2. M. fluviatilis Aubl. Larger than M. 
o the juin duds en 40 cem. long: 
very approximate; 
blades S Ecc cenas to linear- 
ae 4-12 mm. long, very Haccid: 
pedi aa 2-5 mm. DE fae 3—4 mm. 
long: capsule 4-5 long.—Pools, 
a and sluggish Pune Coastal Plain, Fla. to Miss. and Ga.—(W. I., 
Mex., C. A., S. A.) 
FAMILY 2. XYRIDACEAE — YELLOw-EYED GRASS FAMILY 
Leaves basal: blades thickish. Flowers perfect, in a compact termi- 
nal spike. Sepals 3, the two lateral firm, keeled and often appendaged, 
persistent, the ‘third larger, mg with Petals 3, fugacious. Androecium 
most abundant in the tropics 
1, XYRIS [Gronov.] L. Rigid herbs of bogs, swamps, prairies, and pine- 
lands. Leaves not forked at the tip, imbricate at the base of the scape. Flow- 
ers aggregated in a spike with closely imbricate scale-like bracts. Corolla yel- 
low or rarely white. Anthers narrow, the sacs opening lengthwise.—About 50 
species, mostly in the tropics of both hemispheres.—Spr.—fall, or all year S 
YELLOW-EYED GRASSES. VARE-GOLDIES.—The plants of this genus prefer soils 
of a high degree of acidity 
Annual or biennial plants: leaves mainly shorter than the 
sheath of the scape. I. BREVIFOLIAE. 
Perennial plants: leaves mainly longer than the sheath of the 
Scape. 
