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broadleaf carpetgrass


Habit Plants stoloniferous, rarely rhizomatous, rhizomes, when present, 3-5 cm. Plants rhizomatous, frequently also stoloniferous.

7-80 cm;

nodes glabrous or pubescent.

(50)100-300 cm, to about 1 cm thick, sometimes branching above the base;

nodes glabrous.


keeled, strongly compressed, pubescent;

ligules 0.3-0.5 mm;

blades 3-20 mm wide, glabrous or sparsely pilose, midveins often white and prominent, apices frequently ciliate or pubescent.


primarily cauline;

sheaths often much wider than the internodes, mostly glabrous but the collars pubescent, lower sheaths compressed;

ligules 0.5-2.9 mm, ciliolate;

blades 15-50 cm long, (5)20-35 mm wide, bases usually wider than the sheaths.


terminal and axillary, 4-10 cm overall, rachises to 3.5 cm, with 2-5 branches;

branches 1-13 cm.

terminal and axillary, 10-50 cm overall, rachises 2-3.5 cm, with 30-100+ branches;

lower branches 10-24 cm, frequently fascicled.


2-3.5 mm, ovoid, ellipsoid, or lanceoloid, acuminate.

2.1-2.7 mm, ovoid to oblong-ellipsoid, acute or apiculate;

upper glumes and lower lemmas usually 5-veined, sparsely pilose;

upper florets 0-0.4 mm shorter than the upper glumes and lower lemmas, obtuse to subacute.

Upper glumes

and lower lemmas extending beyond the upper florets, 2-5-veined, marginal veins pilose, apices acute to acuminate;

upper lemmas and paleas 1.5-1.8 mm, broadly ellipsoid.


1.2-1.5 mm, gray.

usually absent.


= 40, 60, 80.

= 20.

Axonopus compressus

Axonopus scoparius

from FNA
AL; AR; FL; GA; LA; SC; TX; PR; Virgin Islands
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Axonopus compressus is native from the southeastern United States to Bolivia, Brazil, and Uruguay, and has become established in the Eastern Hemisphere. It is used as a lawn and forage grass but is also weedy, readily growing in moist, disturbed habitats.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Axonopus scoparius is native from southern Mexico to Peru, Bolivia, and Brazil. In Mesoamerica, it rarely sets seed but is grown for forage and often persists after cultivation has ceased. It has been grown experimentally in Florida, but it is not winter hardy even there. Not surprisingly, A. scoparius is not established in the Flora region.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 25, p. 566. FNA vol. 25, p. 566.
Parent taxa Poaceae > subfam. Panicoideae > tribe Paniceae > Axonopus Poaceae > subfam. Panicoideae > tribe Paniceae > Axonopus
Sibling taxa
A. fissifolius, A. furcatus, A. scoparius
A. compressus, A. fissifolius, A. furcatus
Name authority (Sw.) P. Beauv. (Humb. & Bonpl. ex Flüggé) Kuhlm.
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