Elymus stebbinsii
Elymus bakeri
Parish wheatgrass, Stebbins' wheat grass, Stebbins' wildrye
Baker's wheatgrass
60-140 cm;
nodes glabrous or retrorsely pubescent.
30-50 cm tall, 1-2 mm thick, ascending to erect;
nodes glabrous.
evenly distributed;
sheaths glabrous or pubescent;
auricles usually present, 0.5-2 mm;
ligules 0.3-3.5 mm, truncate to acute, sometimes long-ciliate;
blades 4-6.5 mm wide, flat or the margins involute, straight.
not basally concentrated;
sheaths glabrous;
auricles 0.3-0.6 mm;
ligules 0.5-1 mm;
blades 12-20 cm long, 2-4 mm wide, stiff, abaxial surfaces smooth, glabrous, adaxial surfaces smooth or scabridulous, veins prominent, closely spaced.
15-31 cm long, 0.4-1.5 cm wide including the awns, 0.4-0.8 cm wide excluding the awns, erect, with 1 spikelet per node;
internodes 9-27 mm long, 1-1.3 mm wide, glabrous, smooth.
8-12 cm long, 4-6 cm wide including the awns, about 1 cm wide excluding the awns, straight, erect or inclined, with 1 spikelet per node;
internodes 5-9 mm long, about 0.8 mm wide, both surfaces glabrous, edges ciliate.
13-29 mm long, from shorter than to almost twice as long as the internodes, 2.5-5 mm wide, appressed, with 5-7 florets;
rachillas glabrous;
disarticulation above the glumes and beneath each floret.
10-19 mm long, about twice as long as the adjacent internodes, 4-10 mm wide, appressed, with 4-5 florets;
rachillas scabrous or hirtellous;
disarticulation above the glumes, beneath each floret.
subequal, 7.5-12 mm long, 1.2-1.5 mm wide, lanceolate, widest at about mid-length, flat or rounded on the back, 5-veined, veins smooth, scabrous or just the midvein scabridulous, margins widest at about midlength, apices acute, unawned;
lemmas 9-12 mm, glabrous, sometimes scabrous, acute, unawned or awned, awns to 28 mm, straight;
paleas subequal to the lemmas, tapering, apices 0.2-0.3 mm wide;
anthers (3.5)4-7 mm.
7-12 mm long, 1.4-2 mm wide, narrowly oblong, usually green or green tinged with purple, the bases evidently veined or indurate for less than 0.5 mm, 5-veined, veins scabrous, margins narrow, widest distally, apices acute, sometimes bifid, awned, awns 2-8 mm, straight or divergent;
lemmas scabrous or smooth, apices often shortly bidentate, awns 10-35 mm, arcuate to recurved;
paleas equaling or slightly longer than the lemmas, tapering to the 0.2-0.4 mm wide apices;
anthers 0.8-1.5 mm.
= 28.
= 28.
Elymus stebbinsii
Elymus bakeri
Elymus stebbinsii is restricted to California, where it grows on dry slopes, chaparral, and wooded areas, at elevations below 1600 m. It differs from other Elymus species primarily in its combination of long anthers and solitary spikelets. It is often confused with E. glaucus (p. 306) and E. trachycaulus (p. 321) with solitary spikelets. It differs from both in its longer anthers, and from most representatives of E. glaucus in its acute, but unawned, glumes.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Elymus bakeri grows in high, but not alpine, mountain meadows of Colorado and northern New Mexico. It resembles the awned phase of Pseudoroegneria spicata (p. 281), but differs in having rather thicker culms and spikes, and stouter lemma awns. W.A. Weber (University of Colorado, pers. comm., ca. 1999) stated that it often forms large stands in Colorado.
Reports of Elymus bakeri from Idaho appear to be based on fertile hybrids of E. trachycaulus (p. 321) or E. violaceus (p. 324) with Pseudoroegneria spicata; that for Wallowa County, Oregon, on a specimen of E. glaucus (p. 306).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Lemmas awned, awns 8-28 mm long; lower leaf sheaths rarely pubescent; spikelets 13-22 mm long | subsp. septentrionalis |
1. Lemmas unawned or with awns to 8(12) mm long; lower leaf sheaths pubescent or glabrous; spikelets 17-29 mm long | subsp. stebbinsii |
CA
WildflowerSearch
iNaturalist
USDA Plants Database
Flora NW
PNW Herbaria
