Ampelodesmos mauritanicus

(Poir.) T. Durand & Schinz
Common names: Mauritanian grass
Introduced
Treatment appears in FNA Volume 24. Treatment on page 112.

Plants rhizomatous, densely cespitose, clumps to 1 m in diameter. Culms 60-350 cm tall, 5-8 mm thick. Sheaths smooth, striate; ligules 8-15 mm; blades to 100 cm long, 3-9 mm wide, adaxial surfaces strongly ribbed, margins serrate, apices long-tapering. Panicles to 50 cm, lax; branches subsecund, drooping. Spikelets 10-15 mm, stramineous to purplish. Lower glumes 7-10 mm; upper glumes 9-12 mm; calluses 0.2-0.5 mm, rounded; lemmas 9-14.5 mm, distinctly keeled, bidentate, mucronate or awned, awns to 2 mm. Caryopses about 7 mm. 2n = 48.

Discussion

Ampelodesmos mauritanicus is sparingly established in California: in dry oak woodlands in Napa County, and beneath a mixed evergreen canopy on Mount St. Helena in Sonoma County. It is cultivated in other parts of the United States. The plants dry out rapidly in the summer, making them fire-prone. The amount of seed set varies substantially between years. In its native range, which lies along the drier portions of the Mediterranean coast, the leaves and culms are used for mats, vine ties, brooms, baskets, and thatching.

Selected References

None.

Lower Taxa

None.

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

... more about "Ampelodesmos mauritanicus"
membranous +  and scarious +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
awned +, bifid +, bilobed +  and entire +
James P. Smith +  and Jr. +
(Poir.) T. Durand & Schinz +
twisted +  and not branched +
1 (?) +  and 3 (?) +
subterminal +  and eccentric +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
keeled +  and rounded +
pseudopetiolate +  and branching +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
indurate +
0 cm0 mm <br />0 m <br /> (100 cm1,000 mm <br />1 m <br />) +
not evident +
cross +, linear +  and narrowly lanceolate +
3mm;9mm +
spikelike +
well-developed +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
Mauritanian grass +
solid +  and hollow +
60 cm600 mm <br />0.6 m <br /> (350 cm3,500 mm <br />3.5 m <br />) +
ascending +  and erect +
60 cm600 mm <br />0.6 m <br /> (350 cm3,500 mm <br />3.5 m <br />) +
not woody +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0 +  and 1/3 +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
sometimes longer +
2 +  and 6 +
compressed +  and terete +
10mm +  and 12mm +
awn-tipped +  and 3-5-veined +
1-10-veined +
subtending +
/2 +  and 1 +
narrowly lanceolate +  and ovate +
subequal +
chartaceous +  and scarious +
prolonged +
uncinate +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
basally concentrated +  and evenly distributed +
hairy +  and glabrous +
awned +, mucronate +, bidentate +  and keeled +
0.9 cm9 mm <br />0.009 m <br /> (1.45 cm14.5 mm <br />0.0145 m <br />) +
coriaceous +
0.8 cm8 mm <br />0.008 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
membranous +
inconspicuous +
lanceolate +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
concealed +  and prominent +
2 +  and 1 +
well-developed +
2-keeled +
subequal +
0 cm0 mm <br />0 m <br /> (50 cm500 mm <br />0.5 m <br />) +
dry +  and fleshy +
not prolonged +
Introduced +
stramineous +  and purplish +
1 +  and 60 +
unisexual +  and bisexual +
compressed +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
1 (?) +  and 3 (?) +
2 (?) +  and 3 (?) +
Gramineae +
Ampelodesmos mauritanicus +
Ampelodesmos +
species +
membranous +
0.9 cm9 mm <br />0.009 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
inconspicuous +
plant +  and cespitose +
aquatic +  and terrestrial +