Axonopus fissifolius
carpetgrass, common carpetgrass, Louisiana grass, mat grass, narrowleaf carpetgrass
10-75 cm, erect or depressed-decumbent;
cauline nodes glabrous or slightly pubescent.
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.
terminal and axillary, 5-11 cm overall, rachises to 3 cm, with 2-7 branches;
branches 2-9(12) cm, spreading or ascending.
1.6-2.2(2.8) mm, ovoid or ellipsoid, obtuse to acute.
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.
1.5-1.8 mm, gray.
= 20, 40, 80, 100.
Axonopus fissifolius
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.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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