Xyris caroliniana Walter

Carolina yelloweyed grass (en)

Species

Angiosperms > Poales > Xyridaceae > Xyris

Characteristics

Herbs, perennial, usually cespitose, 30--80(--100) cm, base deeply set. Stems compact. Leaves erect or ascending, 20--50 cm; sheath base chestnut brown; blade green, narrowly linear, twisted, 2--5 mm wide, compressed but fleshy, margins minutely tuberculate. Inflorescences: scape sheaths much exceeded by leaves; scapes linear, wiry, flexuous, nearly terete, 1.2--1.5 mm wide, distally 1-ribbed, rib smooth or somewhat scabrous; spikes ellipsoid to lanceoloid or cylindric, 10--30 mm, apex acute; fertile bracts 5--10(--13) mm, margins entire or erose, apex rounded. Flowers: lateral sepals conspicuously exserted, tan to reddish brown, nearly straight, 13--15 mm (including long hairs), keel firm, apex long-fimbriate, fimbriae red; petals unfolding in afternoon, blade obovate, 8--10 mm; staminodes bearded. Seeds translucent, cylindro-fusiform, 0.8--1 mm, with flat, longitudinal ribs. 2n = 18.
More
Lvs deeply set, the outer ones short, scale-like, castaneous, the principal ones linear, 20–50 cm × 2–5 mm, twisted and flexuous, the abruptly dilated, fleshy-thickened, dark brown, shiny bases long-persistent as scales; scapes 5–11 dm, twisted, flexuous, smooth to the touch, terete and minutely ridged below, somewhat flattened (and often 1-edged) above; spikes 1.5–3 cm at maturity, few-to many-fld, narrowly ellipsoid or lance-ovoid; lateral sep almost linear, nearly straight, the broad keel ciliate below, long-fimbriate (and often crisped) at the prominently exserted tip; pet-blades yellow or white, obovate, 8–9 mm, usually opening in afternoon; seeds 0.7–1 mm, narrow, with ca 20 strip-like longitudinal lines; 2n=18. Moist to well drained, sandy soil on the coastal plain, from N.J. and Va. to Fla. and Tex. Early summer–fall.
Life form perennial
Growth form herb
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination
Spread -
Mature width (meter) -
Mature height (meter) 1.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Moist sands of pine savannas, bog edges, upper shores, flatwoods, sandy coastal dune swales, coastal plain from sea level to 300 metres.
Light 4-9
Soil humidity 4-9
Soil texture 1-6
Soil acidity 3-7
Soil nutriment -
Hardiness (USDA) 5-10

Usage

Uses medicinal
Edible -
Therapeutic use Antidiarrheal (root), Pediatric Aid (root), Skin (unspecified), Leprosy (unspecified), Ringworm (unspecified), Itch (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by seedlings.
Mode seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Flower

Xyris caroliniana flower picture by Sylvain Piry (cc-by-sa)

Distribution

Xyris caroliniana world distribution map, present in Åland Islands, Cuba, Georgia, Nicaragua, and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:321291-2
WFO ID wfo-0000609700
COL ID 5CPF9
BDTFX ID -
INPN ID 900693
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Xyris caroliniana f. flaccida Xyris caroliniana Ramotha floridana Xyris conocephala Xyris glabra Xyris graminifolia Xyris indica Xyris caroliniana f. caroliniana Kotsjiletti flexuosa Xyris arenicola Xyris canadensis Xyris fimbriata Xyris flexuosa Xyris pallescens Xyris caroliniana var. brevifolia Xyris caroliniana var. scabra Xyris conocephala var. pallescens Xyris flexuosa var. pallescens Xyris torta var. pallescens Xyris caroliniana f. phyllolepis Xyris scabra Xyris caroliniana var. caroliniana