Rhynchospora knieskernii

J. Carey

Amer. J. Sci. Arts, ser. 2, 4: 25. 1847.

IllustratedEndemicConservation concern
Treatment appears in FNA Volume 23. Treatment on page 211. Mentioned on page 202, 212.
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Illustrator:

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Plants perennial, cespitose, to 50 cm; rhizomes absent. Culms erect to arching, leafy, linear to filiform, nearly triangular. Leaves ascending, overtopped by culm; blades flat, linear to filiform, to 1.8 mm wide, apex distally involute, trigonous, setaceous. Inflorescences terminal and axillary, spikelet clusters 2–4, widely spaced, the lowest near plant base; clusters compact, broadly turbinate to hemispheric, to 1.5 cm wide; leafy bracts curved, setaceous, slightly to greatly overtopping subtended compounds. Spikelets dark brown, lance-ellipsoid, 2–3 mm; fertile scales 2 mm, apex acute, midrib short-excurrent or not. Flowers: perianth bristles 6, ± as long as fruit body, retrorsely barbellate. Fruits mostly 2 per spikelet, 1.5–1.9 mm; body brown with yellowish center, ellipsoid, lenticular distal to short stipe, 1–1.3 × 0.6–0.8 mm; tubercle triangular, 0.3–0.6 mm, distinctly shorter than fruit body.


Phenology: Fruiting summer–fall.
Habitat: Moist to wet pine barrens, sand pits, borrow pits
Elevation: 0–100 m

Discussion

Of conservation concern.

Rhynchospora knieskernii is in the Center for Plant Conservation’s National Collection of Endangered Plants.

Selected References

None.

Lower Taxa

None.
... more about "Rhynchospora knieskernii"
Robert Kral +
J. Carey +
Del. +  and N.J. +
0–100 m +
Moist to wet pine barrens, sand pits, borrow pits +
Fruiting summer–fall. +
Amer. J. Sci. Arts, ser. +
Illustrated +, Endemic +  and Conservation concern +
Dichromena +  and Psilocarya +
Rhynchospora knieskernii +
Rhynchospora +
species +