Eastern Mojave Vegetation Coll. No. 2523, Schizachne purpurescens  
 

 

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  Poaceae Schizachne purpurescens
Photographed 13 November 2021.

Plants of Colorado
Poaceae

Schizachne purpurescens Hackel.  False Melicgrass.

Morrison Creek, Jefferson County, Colorado. Lower part of a small gulch tributary to Morrison Creek, 1.25 km. south of NF Road 550 61.8 km. south of the GNIS location of Golden. 39.3299N, 105.2837W. WGS 1984 Elev. 2378 m.. Fronts of sheaths and proximal glumes are reddish-purple. Damp forest floor, also collected here: Lonicera involucrata, Pedicularis canadensis, Dodecatheon pulchellum, and Oryzopsis asperifolia.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Tom Schweich 2523. 23-Jun-2021

Coll. No. 2523, 23 June 2021, characters observed: Perennial grass, to 40 cm., weakly rhizomatous (?); Leaves, blade and sheath differentiated; Sheath, closed, front reddish-purple; Ligule, membraneous, 1 mm., auricles absent; Blade, 160 mm. × 3.5 mm. wide, flat to revolute, glabrous; Inflorescence, narrow panicle; 110 mm. × 15 mm. wide, branches, 2; Spikelets, many, 22 mm. × 4 mm. wide, similar, borne singly, pedicels, 3-13 mm. Compression, lateral; Disarticulation, between florets; Glumes, lower, 6 mm., veins, 3, upper, 9 mm., ≤lowest floret, veins, 5, rounded, awns, absent; Florets, 4 per spikelet; Axis, scabrous, not extended; Callus, straight white hairs, 1 mm.; Lemma, 9.5 mm., lanceolate, rolled, green, veins, 7, glabrous, convergent, tip, 2-forked, awns, #1, 13 mm., attached on back, gently curving; Palea, 6 mm., <lemma, membraneous, veins, prominently ciliate; Stamens, #2; Anthers, 1.5-1.7 mm.; Ovary, glabrous; Stigma, feathery; Achene, unknown.

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Date and time this page was prepared: 7/24/2022 5:23:53 PM