Xyris jupicai Rich.
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Xyridaceae
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Scientific Name
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Description
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Species Description - Short-lived, often annual; lvs linear, mostly 10–60 cm × 2–5 mm, ascending, smooth, lustrous yellow-green, pale (not anthocyanic) at the dilated, soft, thin, keeled base; scapes 2–8 dm, terete and finely many-ridged below, becoming flattened (but narrow) and usually 1- or 2-edged above; spikes 0.5–1.5 cm at maturity, narrowly ovoid to oblong, blunt; lateral sep shortly included, the broad keel lacerate for 1/2–2/3 its length; pet-blades cuneate, 3 mm, yellow, unfolding in the morning; seeds 0.5 mm, faintly ribbed; 2n=18. Wet, sunny, disturbed sites, often weedy; coastal plain from N.J. to Fla., Tex., and trop. Amer., perhaps only intr. in U.S. Early summer–fall.