Eastern Mojave Vegetation Inflorescence of Coll. No. 1499, Elymus trachycaulus  


Home Page
If you have a question or a comment about this photograph you may write to me at: tas4@schweich.com I sometimes post interesting questions in my FAQ, but I never disclose your full name or address.
  Poaceae Elymus trachycaulus
Scanned 6 January 2017,.

Coll. No 1499, 13 Jul 2016, characters observed: Perennial grass, to 80 cm., tufted, not strongly rhizomatous; Leaves, sheath, open, ligule, membraneous, 0.5 mm., auricles, 1 mm., thin, blade, 12-15 cm., flat to involute; Inflorescence, 2-sided spike Rachis, internodes, 6 mm., scabrous on margins; Spikelets, 1 per node, 17 mm. × 3.5 mm. wide, laterally compressed, appear to be positioned edge-wise to rachis, but this may be a feature of pressing/drying; Florets, 7+ per spikelet; Glumes, #2, ±equal, 8 mm. × 1.2 mm. wide, rounded, veins, #5; Lemma, 9 mm., rounded, veins, #7, glabrous; Palea, ±=lemma; Anthers, 4 mm.

Ackerfield (2015) and Baldwin (2012) lead equivocally to E. trachycaulus, whereas Shaw (2008) and Weber & Wittmann (2012) are more suggestive of E. lanceolatus.

Article records that use this photograph:

Other photos about Species - Poaceae or Elymus trachycaulus.


[Home Page]

Date and time this page was prepared: 4/14/2024 5:46:32 PM