Achnatherum lemmonii subsp. pubescens

(Crampton) Barkworth
Synonyms: Stipa occidentalis var. pubescens Stipa lemmonii var. pubescens Stipa elmeri
Treatment appears in FNA Volume 24. Treatment on page 125.
Please click on the illustration for a higher resolution version.
Illustrator: Cindy Roché

Copyright: Utah State University

Lower sheaths and culms densely tomentose, hairs 0.4-0.6 mm.

Discussion

Achnatherum lemmonii subsp. pubescens is restricted to serpentine soils in southern California. Barkworth and Linman (1984) rejected subsp. pubescens, not appreciating that it differed in having tomentose, rather than pubescent, culms.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number."prolonged" is not a number.

membranous +  and scarious +
not penicillate +
0.23 cm2.3 mm <br />0.0023 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
awned +, bifid +, bilobed +  and entire +
0 cm0 mm <br />0 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Mary E. Barkworth +
(Crampton) Barkworth +
1 (?) +  and 3 (?) +
flexuous +
subterminal +  and eccentric +
usually scabrous +  and scabridulous +
not once-geniculate +
1.6 cm16 mm <br />0.016 m <br /> (3 cm30 mm <br />0.03 m <br />) +
keeled +  and rounded +
folded +  and convolute +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
tomentose +, pubescent +  and glabrous +
pseudopetiolate +  and branching +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
not evident +
involute +, convolute +  and flat +
strongly ascending;appressed +
spikelike +
well-developed +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
pubescent +  and glabrous +
branching +  and not branching +
perennial +  and annual +
15 cm150 mm <br />0.15 m <br /> (90 cm900 mm <br />0.9 m <br />) +
intravaginal +  and basal +
tomentose +, pubescent +  and glabrous +
10 cm100 mm <br />0.1 m <br /> (250 cm2,500 mm <br />2.5 m <br />) +
not woody +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Wash. +, B.C. +, Utah +, Calif. +, Oreg. +, Mont. +, Ariz. +, Idaho +  and Nev. +
1/5 +  and 1/3 +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
0.55 cm5.5 mm <br />0.0055 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
sometimes longer +
compressed +  and fusiform +
1-10-veined +
subtending +
obtuse +, acute +  and acuminate +
subequal +
0.7 cm7 mm <br />0.007 m <br /> (1.15 cm11.5 mm <br />0.0115 m <br />) +
membranous +
divergent +  and distributed +
uncinate +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
solid +  and hollow +
basally concentrated +  and evenly distributed +
0 cm0 mm <br />0 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
ovate +, rectangular +  and lanceolate +
coriaceous +
pubescent +  and glabrous +
membranous +
0.1 cm1 mm <br />0.001 m <br /> (?) +
membranous +
inconspicuous +
not lobed +
4 cm40 mm <br />0.04 m <br /> (5 cm50 mm <br />0.05 m <br />) +
0.9mm +  and 1.1mm +
concealed +  and prominent +
3 +  and 4 +
2 +  and 1 +
pubescent +  and glabrous +
well-developed +
not keeled +
reduced +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
7cm +  and 21cm +
1 cm10 mm <br />0.01 m <br /> (?) +
dry +  and fleshy +
not prolonged +
1 +  and 60 +
unisexual +  and bisexual +
laterally compressed +  and terete +
1 (?) +  and 3 (?) +
simple +  and compound +
Stipa occidentalis var. pubescens +, Stipa lemmonii var. pubescens +  and Stipa elmeri +
Achnatherum lemmonii subsp. pubescens +
Achnatherum lemmonii +
subspecies +
membranous +
0 cm0 mm <br />0 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
inconspicuous +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
plant +  and cespitose +
aquatic +  and terrestrial +