Eastern Mojave Vegetation Coll. No. 1117, Koeleria macrantha  


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  Poaceae Koeleria macrantha
Scanned 21 September 2015.

Coll. No. 1117, 28 May 2015, characters observed: Perennial grass, to 40 cm., not rhizomatous, lacking bulbous base; Leaves, sheath open, ligule membraneous, 1 mm., auricles 0, blade 38 mm. × 2.5 mm., tip, prow-shaped; Inflorescence, 70-80 mm., panicle, narrow, contracted; Spikelets, not enclosed in burs, not in pairs, pedicellate, 5 mm., green with purple tinge, moderately laterally compressed; Pedicel, ascending hairs; Glumes, ±similar, slightly keeled, ±hairy on keel, lower, 3 mm., <1st lemma, upper, 5 mm.; Florets, mostly 2 per spikelet; Rachilla, extends beyond upper floret, glabrous; Callus, few hairs, not cobwebby; Lemma, 4 mm., hairs at base, barely keeled, keel with few short hairs, veins, 3 conspicuous, tips scarious; Palea, <lemma, transparent, veins, 2, hairy.

Distinguished from P. secunda on the strength of: lateral compression (Harrington, 1954), keels on glumes and lemmas (Weber & Wittmann, 2012, and Ackerfield, 2015), lack of cobwebby hairs at base of lemma (Shaw, 2008), and lemma hairy on keel and flowers unisexual (Baldwin, 2012).

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Other photos about Species - Poaceae or Koeleria macrantha.


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Date and time this page was prepared: 4/14/2024 5:46:34 PM