Eastern Mojave Vegetation Coll. No. 2658, Muhlenbergia racemosa  
 

 

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  Poaceae Muhlenbergia racemosa
Photographed 30 January 2022.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Poaceae

Muhlenbergia racemosa (Michx.) Britton, Stern & Poggenb.  Marsh Muhly.

Bull Gulch, Jefferson County, Colorado. Lippincott Ranch, crossed west to east by Bull Gulch, 129 m. west from the eastern boundary, north side of the giant boulder, 1.35 km. north northwest of the main gate, and 23.0 km. north northwest of the GNIS location of Golden. 39.9082N, 105.2774W. WGS 1984 Elev. 1979 m. Also collected (No. 2667) 180 m. farther west. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Tom Schweich, with John Vickery 2658. 7-Aug-2021

Coll. No. 2658, 7 Aug 2021, characters observed: Perennial grass, to 60 cm., rhizomatous; Leaves, Sheath, 38 mm., open; Ligule, membranous, 0.7 mm., lacerate; Auricles, absent; Blade, 65-135 mm. × 3-4 mm. wide, flat, scabrous, margins, scabrous; Inflorescence, 1 per culm, spike-like panicle, 70 mm. × 6 mm. wide; Rachis, not extended, scabrous; Spikelets, many, 4.0-4.5 mm. ×0.5 mm. wide, similar, borne singly, pedicels, 0.6-0.8+ mm.; Glumes, body 2 mm. + awn 3 mm.; Florets, 1 per spikelet; Lemma, 2.5 mm., body < glumes (body+awn), membranous, proximal spreading hairs, distal scabrous, veins, 3, green, tip, acute, awns, 0, [dark green splotches proximally, maybe a smut(?)]; Palea, 2 mm., membranous, glabrous, veins, green; Stamens, Ovary, Achene, none found.

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Date and time this page was prepared: 11/5/2022 8:51:44 PM