زيرون مهدب

Herbs, perennial, usually cespitose, 60--150 cm, base shallowly set. Stems compact. Leaves in fans, 40--70 cm; base dull, straw-colored, green, or pinkish; blade lustrous green, broadly linear, flat or slightly twisted, 5--25 mm, smooth, margins papillate. Inflorescences: scape sheaths much exceeded by leaves; scapes linear, 1--1.5 mm wide, distally scabrous, 2-ribbed, ribs harsh; spikes ovoid to ellipsoid, 12--25 mm, apex blunt; fertile bracts 5--8 mm, margins nearly entire, apex rounded. Flowers: lateral sepals conspicuously exserted, yellow-brown, nearly straight, (5.5--)6--8(--9) mm, keel firm, long-fimbriate with pale hairs; petals unfolding in late morning, blade obovate, 5--8 mm; staminodes bearded. Seeds translucent, cylindro-fusiform, 0.8--1 mm, with broad, flat, pale longitudinal ribs. 2n = 18.

Ala., Del., Fla., Ga., La., Md., Miss., N.J., N.C., Pa., S.C., Tenn., Tex., Va.

Flowering summer--fall (all year south).

Peats and mucks of pond shallows, sluggish shallow streams, bogs, seeps, low pine savanna; 0--300m.

Xyris fimbriata Ell. Bot. S. C. & Ga. 1: 52. 1816
Tufted, rarely annual; roots filiform; leaves linear, 40-60 cm. long, 6—10 mm. broad, obtuse, smooth; sheath occupying about one half the length of the leaf, somewhat dilated below, pale rusty and opaque at the base; peduncles 60-100 cm. tall, 1.5-2.5 mm. broad, bicostate above, multicostate at the middle, scabrid on the ridges, elsewhere smooth, the peduncular sheath 25-40 cm. long; spike obovoid or ellipsoid, 10-15 mm. long, 6-9 mm. thick, the barren bracts numerous (10-15), the outer bracts ovate-orbicular, about 3 mm. long, the flowering bracts obovate-orbicular, about 7 mm. long, 5-6 mm. broad, coriaceous, entire or minutely lacerate-fimbriate at the apex, straw-colored or pale-rusty, somewhat shining, with a grayishgreen ovate or ovate-deltoid dorsal area about 2.5 mm. long; lateral sepals linear-lanceolate, 7-9 mm. long, 0.8-1 mm. broad, somewhat bearded at the apex; keel narrow, bearded or long lacerate-fimbriate from the middle to the apex; seeds fusiform, about 1 mm. long.
Type locality: Georgia.
Distribution: New Jersev to Florida and Mississippi.

Xyris fimbriata, the fringed yelloweyed grass, is a North American species of flowering plant in the yellow-eyed-grass family. It is native to the coastal plain of the United States from eastern Texas to New Jersey.

Xyris fimbriata is a perennial herb up to 150 cm (5 feet) tall with grass-like, olive-green leaves up to 70 cm (28 inches) long, and yellow flowers.

Xyris fimbriata là một loài thực vật hạt kín trong họ Hoàng đầu. Loài này được Elliott miêu tả khoa học đầu tiên năm 1816.