Difference between revisions of "Schoenus nigricans"
Sp. Pl. 1: 43. 1753.
imported>Volume Importer |
imported>Volume Importer |
||
| Line 50: | Line 50: | ||
|publication year=1753 | |publication year=1753 | ||
|special status=Illustrated | |special status=Illustrated | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V23/V23_429.xml |
|genus=Schoenus | |genus=Schoenus | ||
|species=Schoenus nigricans | |species=Schoenus nigricans | ||
Latest revision as of 21:40, 5 November 2020
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.
Phenology: Fruiting summer.
Habitat: Damp, calcareous or alkaline grasslands
Elevation: 0–2000 m
Distribution
Calif., Fla., Nev., Tex., Mexico, Eurasia, Africa, Australia.
Discussion
Selected References
None.