XYRIDACEJE. (YELLOW-EYED GRASS FAMILY.) 501 
obovate, closely imbricated ; lateral sepals linear, narrowly winged above, fim- 
briate and at length incised ; petals small, obovate ; seeds ovoid, pulverulent. — 
Varies with shorter leaves (2/—- 3'), and smaller globose or ovate heads. — Pine- 
barren swamps, West Florida. Sept. and Oct. — Scapes 1°-14° high. Leaves 
8'-12'long. Spikes 6/-9/ long. Petals 2" long. 
9. X. elata, n. sp. Scapes elongated, slender, smooth, terete below, 2-edged 
above ; leaves long, linear, smooth; spikes rugose, oblong or oval, often acute, 
many-flowered ; scales dark brown; lateral sepals linear-lanceolate, sparingly 
toothed on the narrowly winged keel; petals wedge-obovate ; seeds elliptical, 
smooth. — Sandy swamps near the coast, West Florida. July and Aug. — 
Scapes 3°-4° high. Leaves 149 - 29 high. Spikes 4'-1/ long. Petals 2/ 
long. 
10. X. Caroliniana, Walt. Scapes several, smooth, rigid, 1—-2-angled 
below, compressed and 2-edged above ; leaves linear or linear-lanceolate, smooth ;. 
spikes rugose, oblong-ovate, obtuse, many-flowered ; bracts light brown, thick, 
the margins thin and soon lacerate; lateral sepals linear-lanceolate, acute, the 
narrowly-winged keel cut-fringed above the middle ; petals obovate; seeds ovoid. 
— Shallow ponds and swamps, Florida, and northward. July and Aug.— 
Seapes 19 — 29 high. Leaves 6'—15'long. Spikes 6"-— 12” long. 
11. X. iridifolia, n. sp. Rigid, smooth and shining; scape stout, terete 
or l-angled below, dilated and 2-edged above; leaves long, strap-shaped ; spikes 
oval or oblong, obtuse, rugose, many-flowered ; bracts dark brown, very thick, 
strongly convex ; lateral sepals linear, membranaceous, the keel fimbriate and 
at length incised throughout; petals round-obovate ; seeds lanceolate, angled, 
pulverulent. — Shallow ponds, Apalachicola, Florida. Aug.- Oct. — Scape 2° 
-39 high, 2" —3' in diameter. Leaves 2°-2}° long, j'- l' wide. Spikes 1! 
long. Petals 3" long. 
12. X. platylepis, n. sp. Scapes mostly twisted and spiral, angular 
below, 2-edged above, roughish; leaves linear and lanceolate, twisted, smooth ; 
spikes large, oblong or cylindrical, obtuse, many-flowered ; bracts pale brown or 
whitish, orbicular, thin, closely imbricated ; lateral sepals linear, the keel nar- 
rowly winged, fimbriate toward the apex ; petals small ; seeds elliptical, smooth. 
(X. flexuosa, Ell.) — Low sandy places, Florida to South Carolina. oe 
Be — Scape 29 -39 high. Leaves 9/-15/long. Spikes 3/-1}/ long. 
* * Sterile filaments bearded : sepals exserted. Add 
I$ X. fimbriata, Ell. Not bulbous ; scape tall, furrowed, rough, "edge 
above; leaves long, strap-shaped, smooth ; spikes ovate, acute, many-flowered ; 
lateral sepals long-fimbriate above the nào: petals small.— Ponds and miry 
places, Florida, and northward. Sept. and Oct. — Seapes 39-4? high. Leaves 
1}°-2° long. Spikes 9-12" long. Petals 3" long. 
14. X. torta, Smith. Bulbous; scape nearly terete, 1-edged, smooth, eost 
Spiral; leaves linear, rigid, concave, with rounded edges, mostly spiral; spikes 
.. Pale, lanceolate or cylindrical, acute; lateral sepals winged and fimbriate above 
| the middle; petals large, round-obovate.— Sandy, often dry soil, Florida, and 
northward. - NM Scape eae e Leaves few, À 
