Elymus stebbinsii subsp. septentrionalis

Barkworth
Common names: Northern stebbins' wheatgrass
Treatment appears in FNA Volume 24. Treatment on page 329.

Lowest visible cauline node usually glabrous, rarely pubescent. Lower leaf-sheaths usually glabrous, rarely pubescent. Spike internodes 9-21 mm. Spikelets 13-22 mm. Lemmas awned, awns 8-28 mm.

Discussion

Elymus stebbinsii subsp. septentrionalis grows primarily in the Sierra Nevada. Its range extends from near the Oregon border to Tulare County, and includes the coastal mountains north of San Francisco Bay.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

membranous +  and scarious +
with hairs +  and scabrous +
3.5 cm35 mm <br />0.035 m <br /> (?) +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.2mm;0.3mm +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Mary E. Barkworth +, Julian J.N. Campbell +  and Bjorn Salomon +
Barkworth +
1 (?) +  and 3 (?) +
straight +
basal +  and apical +
from the sinus +  and terminal +
not geniculate +
0.8 cm8 mm <br />0.008 m <br /> (2.8 cm28 mm <br />0.028 m <br />) +
keeled +  and rounded +
pseudopetiolate +  and branching +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
not evident +
cross +, linear +  and narrowly lanceolate +
0.4 cm4 mm <br />0.004 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
spikelike +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
hairy +  and glabrous +
Northern stebbins' wheatgrass +
not branching +
sometimes strongly decumbent +  and prostrate +
usually erect +  and ascending +
60 cm600 mm <br />0.6 m <br /> (140 cm1,400 mm <br />1.4 m <br />) +
not woody +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
5 +  and 7 +
laterally compressed +  and terete +
shorter than to longer than the adjacent florets +
7.5mm +  and 12mm +
subtending +
rounded +, flat +  and lanceolate +
subequal +
widest +, 1.2mm +  and 1.5mm +
uncinate +
solid +  and hollow +
1.5 cm15 mm <br />0.015 m <br /> (?) +
9mm +  and 27mm +
0.2 cm2 mm <br />0.002 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (?) +  and 0.13 cm1.3 mm <br />0.0013 m <br /> (?) +
ciliate +  and scabrous +
distributed +
0.9 cm9 mm <br />0.009 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
stiffly membranous +  and coriaceous +
erose +  and entire +
truncate +  and acute +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
membranous +
inconspicuous +
lanceolate +
fleshy +  and membranous +
pubescent +  and glabrous +
scabridulous +
concealed +  and prominent +
pubescent +  and glabrous +
2 +  and 1 +
hairy +  and glabrous +
well-developed +
slightly longer +
tapering +
subequal +
dry +  and fleshy +
spikelike +
pubescent +  and glabrous +
15 cm150 mm <br />0.15 m <br /> (?) +  and 31 cm310 mm <br />0.31 m <br /> (?) +
subsessile +  and sessile +
1.3 cm13 mm <br />0.013 m <br /> (2.9 cm29 mm <br />0.029 m <br />) +
bisexual +  and sterile +
terete +  and compressed +
1.3 cm13 mm <br />0.013 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
2.5mm +  and 5mm +
1 +  and 3 +
simple +  and compound +
2 (?) +  and 3 (?) +
not papillate +
Agropyron parishii +
Elymus stebbinsii subsp. septentrionalis +
Elymus stebbinsii +
subspecies +
membranous +
0 cm0 mm <br />0 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
inconspicuous +
unequal +
plant +  and cespitose +
aquatic +  and terrestrial +