Lagurus ovatus

L.
Common names: Haretail grass
Treatment appears in FNA Volume 24. Treatment on page 670.

Culms (6) 10-50 (80) cm. Sheaths (0.5) 2-8 cm, inflated, ribbed; ligules 1-1.7 (3) mm; blades 2-6 (10) cm long, 2.5-10 mm wide. Panicles 1.5-3 cm long, 1-2 cm wide; branches softly pilose, hairs white, about 0.4 mm, awns and glume veins sometimes purplish; pedicels 0.4-1 (2) mm, pilose. Glumes (5.5) 7-10 mm, awns 1.5-3 mm; rachillas prolonged 0.7-1.4 mm; calluses hairy, hairs to 0.8 mm; lemmas 3.5-4.5 mm, lateral awns 1-2 (6) mm, central awns (8) 12-22 mm; paleas 3-4 mm; anthers 1.4-2.2 mm. Caryopses 2-2.5 mm. 2n = 14.

Distribution

N.J., Alta., Ont., Que., Calif., N.C., Fla., Oreg., Conn.

Discussion

Lagurus ovatus grows in disturbed sites in full sun. It is a waif, or sparingly naturalized, in North Carolina and western Florida; it is established and plentiful in central California. It may not have persisted at the other sites shown. The earliest collection from the United States was made in California in 1903. It is an attractive species and is sometimes grown as an ornamental.

Natural populations of Lagurus ovatus in southern Europe contain both tall and short plants, flowering at about the same time. Protracted germination, followed by simultaneous floral induction at a 12-16 hour photoperiod, leads to the apparent "dimorphism". Plants are quite uniform in height when grown under controlled conditions indoors (Vergagno Gambi 1965).

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Lagurus ovatus"
membranous +  and scarious +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
bilobed +  and bifid +
Gordon C. Tucker +
1 (?) +  and 3 (?) +
straight +
basal +  and terminal +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
keeled +  and rounded +
pseudopetiolate +  and branching +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
not evident +
cross +, linear +  and narrowly lanceolate +
2.5mm;10mm +
spikelike +
1.2 cm12 mm <br />0.012 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
Haretail grass +
not branching +
ascending +  and erect +
villous +  and pilose +
10 cm100 mm <br />0.1 m <br /> (50 cm500 mm <br />0.5 m <br />) +
not woody +
N.J. +, Alta. +, Ont. +, Que. +, Calif. +, N.C. +, Fla. +, Oreg. +  and Conn. +
1/4 +  and 1/3 +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
sometimes longer +
sterile +  and bisexual +
compressed +
reduced +
shorter or longer +
subtending +
lanceolate +
unequal +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
membranous +
uncinate +
0 cm0 mm <br />0 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
1/5 +  and 1/4 +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
villous +  and pilose +
scabridulous +
lanceolate +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
inconspicuous +
lanceolate +
concealed +  and prominent +
2 +  and 1 +
well-developed +
2-keeled +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
1.5cm +  and 3cm +
spikelike +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
2 cm20 mm <br />0.02 m <br /> (?) +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
dry +  and fleshy +
awnlike +
inflated +
2 cm20 mm <br />0.02 m <br /> (8 cm80 mm <br />0.08 m <br />) +
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 +
Lagurus ovatus +
species +
membranous +
parallel +  and converging +
scabridulous +
stoloniferous +  and rhizomatous +
aquatic +  and terrestrial +