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Xyris elliottii with its densely cespitose habit, its glossy brown or red-brown, chaffy leaf sheath bases, and narrow leaves is a part of a complex including Xyris baldwiniana and X. isoetifolia. Usually it is readily distinguished by its taller habit, thicker scapes, and larger spikes, but particularly by its strongly contrasting pale, incrassate leaf blade borders. In peninsular Florida, however, this leaf border is not consistently present, particularly in the narrower-bladed populations (in these, leaf blades may be less than 1 mm wide). Such plants can be distinguished from X. baldwiniana by the staminodial brush, absent in X. baldwiniana, and from X. isoetifolia by the different spike shape, the ragged (rather than entire) bracts, and by a different seed sculpture. Hybrids between X. elliottii and X. brevifolia occur in southern Florida.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
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Flora of North America Vol. 22 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Description

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Herbs, perennial, densely cespitose, 40--60(--70) cm. Stems compact. Leaves in narrow fans to erect, 10--30(--40) cm; sheath base tan to brown, firm; blade mostly green or tinged with maroon, narrowly linear, flattened, plane or slightly twisted, 1--2(--2.5) mm wide, smooth, margins pale, narrow, incrassate, smooth or papillate. Inflorescences: scape sheaths exceeded by leaves; scapes linear, nearly terete, 0.7--1 mm wide, apically 2-ribbed, ribs smooth or papillate; spikes mostly ovoid or ellipsoid, 6--15 mm, apex acute; fertile bracts 5--6 mm, margins pale, strongly scarious, lacerate, often squarrose, submarginally often reddish, apex low-keeled. Flowers: lateral sepals included or slightly exsert, slightly curved, (5.5--)6--7 mm, keel concolorous, firm, finely lacerate or apically lacero-fimbriate, not papillate or ciliate; petals unfolding in morning, blade obovate, 5 mm; staminodes bearded. Seeds translucent, ellipsoid, 0.5--0.6 mm, prominently longitudinally lined. 2n = 189.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 22 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Flora of North America @ eFloras.org
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Flora of North America Editorial Committee
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Habitat & Distribution

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Flowering late spring--summer (all year south). Acid sandy flatwoods, sandy shores, swales in pinelands, bog edges, coastal plain; Ala., Fla., Ga., S.C.; West Indies; Central America.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 22 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Flora of North America @ eFloras.org
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Flora of North America Editorial Committee
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Synonym

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Xyris elliottii var. stenotera Malme
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 22 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
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Flora of North America Editorial Committee
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Comprehensive Description

provided by North American Flora
Xyris elliottii Chapm. Fl. S. U. S. 500. 1860
Xyris '■ ' :.:■. Elliott, Bot. S. C. & Ga. 1: 52. 1816. Not X. brevifolia Michx. 1803.
Perennial, tufted; leaves narrowly linear, 10-20 [—25) cm. long, 1-2 mm. broad, acute, scabrid at margins, elsewhere smooth: sheath occupying about one fifth the length of the leaf, often violaceous above, chestnut-colored or rusty and somewhat shining below, much dilated at the base; peduncles usually 40-50 cm. tall, 1-1.5 mm. broad, slightly compressed, bicostate, especially above, often scabrid on the ridges, elsewhere smooth, the peduncular sheath 7-11 cm. long, rusty or chestnut-colored and shining below; spike many-flowered, obovoid or ellipsoid, 6-10 mm. long, 3.5-5.5 mm. thick, the outer barren bracts elliptic, 2-3 mm. long, obtuse or rounded at the apex, the flowering bracts obovate, about 5 mm. long, 3-4 mm. broad, ecarinate, rounded, very lacerate and usually dull-purple at the apex, elsewhere straw-colored or tawny, with a grayish-green or dull-purple elliptic or ovate dorsal area about 2 mm. long; lateral sepals somewhat exserted, spatulate lanceolate, 5-6 mm. long, about 0.75 mm. broad, acute or nearly so: keel lacerate-fimbriate or lacerate-ciliate from the middle to the apex and often purple at the apex; seeds ellipsoid, 0.4-0.5 mm. long.
Type locality: South Carolina.
Distribution: South Carolina to Florida and Texas: western Cuba (Pinar del Rio,); Haiti; Santo Domingo: Puerto Rico: Martinique.
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bibliographic citation
Albert Charles Smith, Harold Norman Moldenke, Edward Johnston Alexander. 1937. XYRIDALES. North American flora. vol 19(1). New York Botanical Garden, New York, NY
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Xyris elliottii

provided by wikipedia EN

Xyris elliottii, common name Elliott's yelloweyed grass,[2] 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 Mississippi to South Carolina plus southern Mexico (Tabasco), Central America (Belize, Nicaragua) and the West Indies (Cuba, Puerto Rico).[3][4][5][6][7]

Xyris elliottii is a perennial herb up to 25 cm (10 inches) tall with grass-like, olive-green leaves up to 40 cm (4 inches) long, and yellow flowers.[4][8][9]

References

  1. ^ Quiton Tuijtelaars, M. (2013). "Xyris elliottii". IUCN Red List of Threatened Species. 2013: e.T44392390A44457931. doi:10.2305/IUCN.UK.2013-2.RLTS.T44392390A44457931.en. Retrieved 19 November 2021.
  2. ^ USDA, NRCS (n.d.). "Xyris elliottii". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 16 September 2015.
  3. ^ Biota of North America Program 2014 county distribution map
  4. ^ a b Flora of North America, Xyris drummondii Malme 1933.
  5. ^ Tropicos, Xyris elliottii Chapm.
  6. ^ Kral, R. 2001. Xyridaceae. En: Stevens, W.D., C. Ulloa, A. Pool & O.M. Montiel (eds.). Flora de Nicaragua. Monographs in Systematic Botany from the Missouri Botanical Garden 85(3): 2544–2549
  7. ^ Balick, M. J., M. H. Nee & D.E. Atha. 2000. Checklist of the vascular plants of Belize. Memoirs of The New York Botanical Garden 85: i–ix, 1–246
  8. ^ Malme, Gustaf Oskar Andersson 1933. Arkiv för Botanik utgivet av K. Svenska Vetenskapsakademien 25A(12): 14–15
  9. ^ Chapman, Alvan Wentworth 1860. Flora of the southern United States 500

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Xyris elliottii: Brief Summary

provided by wikipedia EN

Xyris elliottii, common name Elliott's 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 Mississippi to South Carolina plus southern Mexico (Tabasco), Central America (Belize, Nicaragua) and the West Indies (Cuba, Puerto Rico).

Xyris elliottii is a perennial herb up to 25 cm (10 inches) tall with grass-like, olive-green leaves up to 40 cm (4 inches) long, and yellow flowers.

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