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awn halfchaff sedge, awn lipocarpha, halfchaff sedge, point hemicarpha

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.

Lipocarpha aristulata

Phenology Fruiting late summer–early fall.
Habitat Typically on sandy soils, emergent shorelines, stream banks, ponds, ditches
Elevation 0–1500 m (0–4900 ft)
Distribution
from FNA
AZ; CA; CO; KS; MN; MO; NE; NM; OK; OR; TX; WA; WY
[BONAP county map]
Source FNA vol. 23, p. 196.
Parent taxa Cyperaceae > Lipocarpha
Sibling taxa
L. drummondii, L. maculata, L. micrantha, L. microcephala, L. occidentalis
Synonyms Hemicarpha micrantha var. aristulata, Hemicarpha aristulata, Hemicarpha intermedia
Name authority (Coville) G. C. Tucker: J. Arnold Arbor. 68: 410. (1987)
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