Phleum arenarium

L.
Common names: Sand timothy
Introduced
Treatment appears in FNA Volume 24.

Plants annual. Culms 2-35 cm. Sheaths of the flag leaves inflated; auricles not developed; ligules 1.5-3 mm, rounded to acute; blades 1-5 (7) cm long, 1.5-5 mm wide, flat or folded. Panicles 0.5-5.5 cm long, 3-7 mm wide, ovoid to shortly cylindrical, cuneate at the base, widest at or above midlength. Glumes 2.2-4.4 mm, oblong-lanceolate, keels ciliate, tapered, apices parallel or divergent, awns 0.3-1 mm, usually parallel, sometimes divergent; lemmas about 1/3 as long as the glumes, glabrous or pubescent; anthers 0.3-1.2 mm. 2n = 14.

Discussion

Phleum arenarium is native to maritime sands and shingles of southern and western Europe. It is known only from old ballast dump records in the Flora region.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Phleum arenarium"
membranous +  and scarious +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
divergent +  and parallel +
Acute (?) +, Awnlike (?) +, Truncate (?) +  and Tapered (?) +
Mary E. Barkworth +
divergent +  and parallel +
1 (?) +  and 3 (?) +
straight +
basal +  and terminal +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
keeled +  and rounded +
pseudopetiolate +  and branching +
not connate +
intravaginal +, extravaginal +, branching +  and basal +
keeled +, cuneate +  and u--shaped +
swelling +
1 cm10 mm <br />0.01 m <br /> (5 cm50 mm <br />0.05 m <br />) +
not evident +
folded +  and flat +
1.5mm;5mm +
spikelike +
Sand timothy +
not branching +
decumbent +  and erect +
2 cm20 mm <br />0.02 m <br /> (35 cm350 mm <br />0.35 m <br />) +
not woody +
N.Y. +, N.J. +, Mass. +  and Oreg. +
1/6 +  and 1/4 +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
sometimes longer +
sterile +  and bisexual +
compressed +
reduced +
subtending +
oblong-lanceolate +
unequal +
0.22 cm2.2 mm <br />0.0022 m <br /> (0.44 cm4.4 mm <br />0.0044 m <br />) +
uncinate +
pubescent +  and glabrous +
not keeled +
rounded +  and acute +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
membranous +
inconspicuous +
concealed +  and prominent +
2 +  and 1 +
well-developed +
2-keeled +
subequal +
0.5cm +  and 5.5cm +
cuneate +, ovoid +  and shortly cylindrical +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
1 cm10 mm <br />0.01 m <br /> (?) +
dry +  and fleshy +
inflated +
Introduced +
1 +  and 60 +
compressed +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (5 cm50 mm <br />0.05 m <br />) +
1 (?) +  and 3 (?) +
simple +  and compound +
2 (?) +  and 3 (?) +
Gramineae +
Phleum arenarium +
species +
membranous +
parallel +  and converging +
stoloniferous +  and rhizomatous +
aquatic +  and terrestrial +