Leptochloa fusca subsp. fusca

Common names: Beetlegrass sprangletop
Treatment appears in FNA Volume 25. Treatment on page 56.

Culms 40-170 cm, usually ascending to erect, some¬times decumbent and rooting at the lower nodes, often branching at the upper nodes. Blades glabrous or scabrous, not exceeding the panicles. Panicles 15-105 cm long, 2-20 cm wide, sometimes partially enclosed by the upper leaf-sheaths; branches (1.5) 4-20 cm, ascending to erect. Spikelets 6-14 mm. Lower glumes 1.9-3 (4.9) mm, ovate, obtuse to acute, rarely bifid; upper glumes 3-4.7 (5.5) mm, obtuse to acute; lemmas 3-4.7 (6) mm, light-brown to dark green at maturity, without a basal dark spot, apices obtuse, acute, or acuminate, sometimes bifid; anthers 3, 0.5-2.7 mm. Caryopses 1.6-2.3 mm.

Discussion

Leptochloa fusca subsp. fusca is the most variable of the subspecies. In North America, it is known only from a few specimens collected at scattered locations in California; it may no longer be in the Flora region.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.27 cm2.7 mm <br />0.0027 m <br />) +
emarginate to bifid +
Neil Snow +
(L.) Kunth +
1 (?) +  and 3 (?) +
multiple +, , +  and single +
keeled +  and rounded +
pseudopetiolate +  and branching +
not fused +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
not pseudopetiolate +
scabrous +  and glabrous +
usually linear +  and lanceolate occasionally ovate +
subdigitate +, digitate +  and non-disarticulating +
1.5 cm15 mm <br />0.015 m <br /> (?) +
ascending;erect +
spikelike +
4 cm40 mm <br />0.04 m <br /> (20 cm200 mm <br />0.2 m <br />) +
pubescent +  and glabrous +
elliptic +  and ovate or obovate +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.23 cm2.3 mm <br />0.0023 m <br />) +
triangular +  and dome--shaped +
sometimes longer +
membranous +
Beetlegrass sprangletop +
branching +  and rooting +
usually ascending +  and erect +
geniculate +
40 cm400 mm <br />0.4 m <br /> (170 cm1,700 mm <br />1.7 m <br />) +
not woody +
Mo. +, N.J. +, Conn. +, N.Y. +, Wash. +, Del. +, D.C. +, Wis. +, Pa. +, W.Va. +, Maine +, N.H. +, Pacific Islands (Hawaii) +, Fla. +, Wyo. +, Puerto Rico +, N.Mex. +, Tex. +, La. +, N.C. +, Mass. +, Tenn. +, Ariz. +, Calif. +, Virgin Islands +, R.I. +, Nev. +, Va. +, Colo. +, Miss. +, Oreg. +, Ala. +, Kans. +, N.Dak. +, Nebr. +, Okla. +, S.Dak. +, S.C. +, Ark. +, Vt. +, Ill. +, Ga. +, Ind. +, Iowa +, Idaho +, Md. +, Ohio +, Utah +, Minn. +, Mich. +, Mont. +, B.C. +, Ont. +, Que. +  and Ky. +
not waisted +
capillary +
3 cm30 mm <br />0.03 m <br /> (50 cm500 mm <br />0.5 m <br />) +
scabrous +  and glabrous +
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
not disarticulating +
sometimes longer +
6 +  and 20 +
round +  and compressed +
reduced +
shorter or longer +
subtending +
rounded +  and weakly keeled +
subequal +  and unequal +
membranous +
uncinate +
paniculate +  and racemose +
not absent +
light-brown +  and dark green +
acuminate +  and acute +
0.3 cm3 mm <br />0.003 m <br /> (0.47 cm4.7 mm <br />0.0047 m <br />) +
membranous +
sometimes longer +
lacerate +  and attenuate +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
membranous +
inconspicuous +
obtuse +  and acute +
0.19 cm1.9 mm <br />0.0019 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
concealed +  and prominent +
2 +  and 1 +
subequal +
membranous +
15cm +  and 105cm +
2 cm20 mm <br />0.02 m <br /> (20 cm200 mm <br />0.2 m <br />) +
dry +  and fleshy +
spikelike +
scabrous +  and glabrous +
distant +  and tightly imbricate +
1 +  and 60 +
rounded +  and slightly keeled +
0.6 cm6 mm <br />0.006 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
1 +  and 3 +
compound +  and simple +
2 (?) +  and 3 (?) +
Gramineae +
Leptochloa fusca subsp. fusca +
Leptochloa fusca +
subspecies +
membranous +
obtuse +  and acute +
0.3 cm3 mm <br />0.003 m <br /> (0.47 cm4.7 mm <br />0.0047 m <br />) +
7 (?) +  and 13 (?) +
perennial +  and annual +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +