Flora of North America species comparison

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Xyris laxifolia

Xyris fimbriata

laxleaf yelloweyed grass

fringe yelloweyed grass
Habit 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.

Xyris laxifolia

Xyris fimbriata
Phenology Flowering summer–fall (all year south).
Habitat Peats and mucks of pond shallows, sluggish shallow streams, bogs, seeps, low pine savanna
Elevation 0–300 m (0–1000 ft)
Distribution
from FNA
AL; AR; FL; GA; LA; MS; NC; SC; TN; TX; VA; Mexico; Central America; South America
[WildflowerSearch map]
[BONAP county map]
from FNA
AL; DE; FL; GA; LA; MD; MS; NC; NJ; PA; SC; TN; TX; VA
[WildflowerSearch map]
[BONAP county map]
Discussion

Varieties 2 (1 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 22. FNA vol. 22.
Parent taxa Xyridaceae > Xyris Xyridaceae > Xyris
Sibling taxa
X. ambigua, X. baldwiniana, X. brevifolia, X. caroliniana, X. difformis, X. drummondii, X. elliottii, X. fimbriata, X. flabelliformis, X. isoetifolia, X. jupicai, X. longisepala, X. montana, X. platylepis, X. scabrifolia, X. serotina, X. smalliana, X. stricta, X. tennesseensis, X. torta
X. ambigua, X. baldwiniana, X. brevifolia, X. caroliniana, X. difformis, X. drummondii, X. elliottii, X. flabelliformis, X. isoetifolia, X. jupicai, X. laxifolia, X. longisepala, X. montana, X. platylepis, X. scabrifolia, X. serotina, X. smalliana, X. stricta, X. tennesseensis, X. torta
Subordinate taxa
X. laxifolia var. iridifolia
Name authority Martius: Flora (Akureyri) 24(2 Beibl.):53. (1841) Elliott
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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