Eastern Mojave Vegetation Inflorescence of Coll. No. 1999, Elymus trachycaulis  


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  Poaceae Elymus trachycaulis
Scanned 24 January 2019.

Coll. No. 1999, 24 July 2018, characters observed: Perennial grass, 60 mm., clumped; Leaves, sheath, 85-115 mm., open, glabrous, margin of sheath glabrous, ligule, membranous, 0.5 mm., auricles, 0.5-1.0 mm., blade, 52-115 mm. × 3.5 mm. wide, flat to revolute, scabrous; Inflorescence, 1 per culm, >leaves, 120 mm. × 8 mm. wide, panicle, single spikelets on alternating sides of rachis; Rachis, not extended, scabrous on margins, internodes, 3.2-3.5 mm.; Spikelets, many, 12 mm. × 2 mm. wide, similar, 1 per node, sessile, overlapping 5 mm.; Compression, unremarkable; Disarticulation, between florets; Glumes, lower, 8 mm., veins, #5, upper, 9 mm., <lowest floret, veins, #7-9; Florets, 3 per spikelet; Lemma, 10 mm., >glumes, lanceolate, rolled, scabrous, green, veins, #5, margins, scarious, tip, sharp-pointed, if an awn then 1 mm.; Palea, 7.5 mm., <lemma, membranous, keels, green and ciliate; Anthers, 1.0-1.3 mm.; Achene, 4.3 mm., green, hairy on blunt tip.

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Other photos about Species - Poaceae or Elymus trachycaulus.


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Date and time this page was prepared: 6/6/2024 11:52:29 AM