Lipocarpha aristulata
J. Arnold Arbor. 68: 410. 1987.
IllustratedEndemic
Basionym: Hemicarpha micrantha var. aristulata Coville Bull. Torrey Bot. Club 21: 36. 1894
Synonyms: Hemicarpha aristulata (Coville) Smyth Hemicarpha intermedia Piper
Culms 2–15 cm × 0.3–0.5 mm. Leaves 1–6 cm × 0.4–0.6 mm. Inflorescences: spikes 1–2, ovoid (to globose), 1–5(–8) × 1–2.5 mm; bracts 1–2, longest erect, 1–3.5 cm × 0.3–0.5 mm. Spikelets: floral scales 2; 1st scale light brown to reddish brown, with greenish midvein, obtrullate to rhomboid, 0.9–1.6 × 0.3–0.6 mm, widest at mid length, long-acuminate, curving outward; 2d scale oblong, veinless (occasionally 2–4 reddish veins), 0.5–0.8 × 0.2 mm; 3d scale absent; stamens 1; anthers 0.2 mm; stigmas 2. Achenes obovoid to terete, 0.5–0.8 × 0.25–0.35 mm, 1.5–2.5 times long as wide.
Phenology: Fruiting late summer–early fall.
Habitat: Typically on sandy soils, emergent shorelines, stream banks, ponds, ditches
Elevation: 0–1500 m
Distribution
Ariz., Calif., Colo., Kans., Minn., Mo., Nebr., N.Mex., Okla., Oreg., Tex., Wash., Wyo.
Discussion
Selected References
None.
Lower Taxa
None.