Axonopus fissifolius

(Raddi) Kuhlm.
Common names: Common carpetgrass
Synonyms: Axonopus affinis
Treatment appears in FNA Volume 25. Treatment on page 565.

Plants usually cespitose, sometimes stoloniferous, nodes of the stolons often pilose. Culms 10-75 cm, erect or depressed-decumbent; cauline nodes glabrous or slightly pubescent. Sheaths compressed, mostly glabrous, margins ciliate; ligules 0.2-0.4 mm; blades 4-15 cm long, 1.5-6 mm wide, flat, mostly glabrous, margins with papillose-based cilia. Panicles terminal and axillary, 5-11 cm overall, rachises to 3 cm, with 2-7 branches; branches 2-9 (12) cm, spreading or ascending. Spikelets 1.6-2.2 (2.8) mm, ovoid or ellipsoid, obtuse to acute. Upper glumes and lower lemmas scarcely extending beyond the upper florets, 2-veined, margins sparsely pilose, apices obtuse to subacute; upper lemmas and paleas 1.6-2.1 mm long, 0.5-0.7 mm wide. Caryopses 1.5-1.8 mm, gray. 2n = 20, 40, 80, 100.

Distribution

Puerto Rico, Va., Okla., Miss., Tex., La., Calif., Ala., N.C., S.C., Pacific Islands (Hawaii), Ga., Fla., Ark.

Discussion

Axonopus fissifolius is sometimes used as a lawn or pasture grass, but it is also an invasive weedy species, often growing in moist, disturbed sites. It is native in the southeastern United States and from central Mexico south to Bolivia and Argentina. It has also been introduced into tropical and subtropical regions of the Eastern Hemisphere.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number."elongated" is not a number.

... more about "Axonopus fissifolius"
100 +, 80 +, 40 +  and 20 +
Obtuse (?) +  and Subacute (?) +
anatomy +  and kranz +
Mary E. Barkworth +
(Raddi) Kuhlm. +
1 (?) +  and 3 (?) +
keeled +  and rounded +
pseudopetiolate +  and branching +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
disarticulating +  and pseudopetiolate +
non-radiate +  and radiate +
4 cm40 mm <br />0.04 m <br /> (15 cm150 mm <br />0.15 m <br />) +
obtuse +, convolute +  and flat +
1.5mm;6mm +
12 cm120 mm <br />0.12 m <br /> (?) +
ascending;spreading +
triquetrous +  and spikelike +
not developed +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
pubescent +  and glabrous +
papillose-based +
sometimes longer +
Common carpetgrass +
branched +  and solid +
depressed-decumbent +  and erect +
10 cm100 mm <br />0.1 m <br /> (75 cm750 mm <br />0.75 m <br />) +
not woody +
Puerto Rico +, Va. +, Okla. +, Miss. +, Tex. +, La. +, Calif. +, Ala. +, N.C. +, S.C. +, Pacific Islands (Hawaii) +, Ga. +, Fla. +  and Ark. +
capillary +
germination +
pistillate +  and staminate +
sometimes longer +
compressed +  and terete +
shorter or longer +
subtending +
unequal +
membranous +
uncinate +
bracteate +  and ebracteate +
solid +  and hollow +
cauline +  and basal +
coriaceous +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
membranous +
inconspicuous +
complex +  and simple +
concealed +  and prominent +
2 +  and 1 +
subterranean +
5 cm50 mm <br />0.05 m <br /> (11 cm110 mm <br />0.11 m <br />) +
dry +  and fleshy +
compressed +
sessile +  and subsessile +
in triplets +  and paired +
1 +  and 60 +
unisexual +  and bisexual +
ellipsoid obtuse +  and acute +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
1 (?) +  and 3 (?) +
fused +  and free +
2 (?) +  and 3 (?) +
dome--shaped +  and triangular +
Axonopus affinis +
Axonopus fissifolius +
Axonopus +
species +
membranous +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.21 cm2.1 mm <br />0.0021 m <br />) +
0.5mm +  and 0.7mm +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.21 cm2.1 mm <br />0.0021 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
annual +  and perennial +
plant +  and cespitose +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +