Carex lenticularis var. impressa

(L. H. Bailey) L. A. Standley

Syst. Bot. Monogr. 7: 65. 1985.

Basionym: Carex interrupta var. impressa L. H. Bailey Mem. Torrey Bot. Club 1: 18. 1889
Synonyms: Carex limnaea T. Holm Carex paucicostata Mackenzie
Treatment appears in FNA Volume 23. Treatment on page 392. Mentioned on page 389, 391.

Culms 15–60 cm. Leaf blades 2–3.5 mm wide. Inflorescences: peduncle of proximal spike 1 cm; proximal bract red-brown at base, 1–3 mm wide. Spikes: proximal 3–5 spikes pistillate, 1.5–3.6 cm × 3–4 mm; terminal spike staminate. Pistillate scales red-brown or black. Perigynia with purple-brown spots on apical 1/2, 1–3 veins abaxially, ellipsoid or ovoid, 1.8–2.5 × 1.1–1.5 mm; stipe 0.2 mm; beak red-brown, 0.2–0.5 mm. 2n = 92.

Phenology: Fruiting Aug.
Habitat: Seasonally flooded river and lakeshores
Elevation: 1200–3000 m


V23 697-distribution-map.jpg

Calif., Idaho, Oreg., Wash.


Primarily a taxon of the Sierra Nevada and southern Cascade Mountains, Carex lenticularis var. impressa tends to have smaller perigynia with fewer veins and more red-brown pigmentation than does the more widespread var. lipocarpa.

Selected References


Lower Taxa

Lisa A. Standley +, Jacques Cayouette +  and Leo Bruederle +
(L. H. Bailey) L. A. Standley +
Carex interrupta var. impressa +
Calif. +, Idaho +, Oreg. +  and Wash. +
1200–3000 m +
Seasonally flooded river and lakeshores +
Fruiting Aug. +
Syst. Bot. Monogr. +
Illustrated +  and Endemic +
Carex limnaea +  and Carex paucicostata +
Carex lenticularis var. impressa +
Carex lenticularis +
variety +