Carex inops subsp. heliophila (Mackenzie) W. J. Crins
Family: Cyperaceae
sun sedge
[Carex erxlebeniana Kelso,  more]
Carex inops subsp. heliophila image
Patrick Alexander  
Staminate spike peduncles 1.2-4.5 mm. Proximal cauline pistillate spikes sessile, globose to ovoid. 2n = 36, 40. Fruiting mid Apr-early Jul. Open, well-drained sandy, loamy, and loess soils in prairies (grazed and ungrazed) and ponderosa pine woodlands; 100-1500 m; Alta., B.C., Man., Ont., Sask.; Colo., Ill., Ind., Iowa, Kans., Mich., Minn., Mo., Mont., Nebr., N.Mex., N.Dak., S.Dak., Wis., Wyo.
From Flora of Indiana (1940) by Charles C. Deam
A prairie species represented from Indiana by two collections by Deam: in a sandy black oak woods 2 miles southwest of Tefft, Jasper County, June 6, 1924, and on top of the high gravelly bank of Big Wea Creek terrace 4 miles southwest of Lafayette, Tippecanoe County, June 3, 1924, and May 24, 1932. At the latter station it was plentiful in an open black oak-shagbark hickory grove with such other prairie or western species as Androsace occidentalis, Petalostemum purpureum, Arenaria patula, Opuntia rafinesquii, and, nearby, Muhlenbergia cuspidata, Sporobolus clandestinus, and Erysimum asperum. Other associated plants were Festuca octoftora, Poa pratensis, Penstemon hirsutus, Houstonia longifolia, and Acerates viridiflora.
Perigynium (1.5-)1.7-2.2 mm wide; stems usually scabrous below the infl; ventral face of sheath of upper cauline lf only shallowly concave, its cleft not extending more than 1(-1.5) mm below the junction with the blade; 2n=40. Mainly on the prairies and plains to the w. of our range, but extending e. to Minn., Io., n. Mo., and occasionally Ind., Mich., and s. Ont. (C. heliophila; C. inops ssp. h.)

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

©The New York Botanical Garden. All rights reserved. Used by permission.
Carex inops subsp. heliophila image
Patrick Alexander  
Carex inops subsp. heliophila image
Patrick Alexander  
Carex inops subsp. heliophila image
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