Schoenus nigricans
L.
Family:
Cyperaceae
Black Bog-Rush
[
Schoenus nigricans var. plurisquamatus
Kük.]
Max Licher
FNA
Resources
Gordon C. Tucker in Flora of North America (vol. 23)
Rhizomes short, oblique. Culms hollow, glabrous. Leaves: basal sheaths blackish, conspicuously wider than leaf blades; blades 10-40 cm × 0.8-2 mm, margins involute, smooth or scabridulous. Inflorescences loosely ovoid, 1-2 cm; bracts 1 or 2, oblique to erect, green to dark brown or black, 1-6 cm × 1-1.5 mm. Spikelets (1-)10-25, flattened, oblong-ellipsoid; rachilla wingless, ± deciduous at maturity; basal scales 2-3, sterile; floral scales 3-8, laterally veinless, medially 1-veined, oblong, apex acute, not mucronate, distally scabrellate. Flowers: perianth bristles 0-6, smooth or scabrellate; anthers linear, connective apices subulate, conspicuous; styles 0.6-1 mm; stigmas 0.5 mm. Achenes whitish, ovoid to ellipsoid, 1-1.5 × 0.9-1.2 mm, glossy, apex obtuse, smooth or barely reticulate. 2n = 54, 55.
Fruiting summer. Damp, calcareous or alkaline grasslands; 0-2000 m; Calif., Fla., Nev., Tex.; Mexico; Eurasia; Africa; Australia.
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Max Licher
Max Licher
Max Licher
Max Licher
University of Florida Herbarium
University of Florida Herbarium
University of Florida Herbarium
University of Florida Herbarium
University of Florida Herbarium
University of Florida Herbarium
University of Florida Herbarium
University of Florida Herbarium
University of Florida Herbarium
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