Eastern Mojave Vegetation Coll. No. 1529, Poa palustris  
 

 

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  Poaceae Poa palustris
Sure hope I got this one right; spent enough time working on it.

Photographed 17 January 2017.

North Table Mountain, Jefferson County, Colorado. Lower south slopes of North Table Mountain, above Peery Parkway, 250 m. south of the USBR monument “North Table,”1.25 km. north of the GNIS location of Golden. 39.767°N, 105.22°W. WGS 1984 Elev. 1833 m. Small wetland where the North Table Mountain Trail crosses a watercourse below a near-perennial spring that is higher on the south slope of the mesa.

Coll. No. 1529, 5 August 2016, characters observed: Perennial grass, to 1 m., growing in running water; rhizomes, unknown (none seen); Leaves, sheath open, ligule, membraneous, 4 mm., blade, flat, scabrous, tip, narrow, not broadly prow-shaped; Inflorescence, open panicle, 28 cm. × 20 cm. wide, lower branches 4-5 per node; Pedicels, 0.3-3.0 mm.; Spikelets, 1 per node, 4 mm. × 1 mm., compression lateral, glumes, lemma, and paleae very fragile; Glumes, #2, lower, 2.6 mm., veins 3, upper, 2.8 mm., veins 3 (5?); Disarticulation, above the glumes; Florets, 3 fertile, + uppermost rudimentary; Lemma, 2.6 mm., veins, at least 3, maybe 5, basal hairs sparse, but length 1/2 the lemma, keeled, hairy proximally, margin, hairy proximally, glabrous between the veins; Palea, 2.3 mm.

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Date and time this page was prepared: 9/23/2017 2:44:15 PM