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Dallis grass, sticky heads

brunswickgrass

Habit Plants perennial; cespitose, rhizomatous, rhizomes short (less than 1 cm), forming a knotty base. Plants perennial; rhizomatous, rhizomes 5-25 cm, conspicuous.
Culms

50-175 cm, erect;

nodes glabrous.

10-70 cm, erect to ascending;

nodes glabrous.

Sheaths

glabrous or pubescent, lower sheaths more frequently pubescent than the upper sheaths;

ligules 1.5-3.8 mm;

blades to 35 cm long, 2-16.5 mm wide, flat, mostly glabrous, adaxial surfaces with a few long hairs near the base.

glabrous, pubescent apically;

ligules 1.2-1.5 mm;

blades 6-20 cm long, 4-5 mm wide, flat to conduplicate, glabrous or pubescent.

Panicles

terminal, with 2-7 racemosely arranged branches;

branches 1.5-12 cm, racemose, divergent;

branch axes 0.7-1.4 mm wide, winged, glabrous, margins scabrous, terminating in a spikelet.

terminal, with 2-5 racemosely arranged branches;

branches 1.4-5.2 cm, divergent;

branch axes about 0.8 mm wide, glabrous, terminating in a spikelet.

Spikelets

2.3-4 mm long, 1.7-2.5 mm wide, paired, appressed to the branch axes, ovate, tapering to an acute apex, stramineous (rarely purple).

2.3-2.7 mm long, 1.4-1.8 mm wide, paired, appressed to or divergent from the branch axes, elliptic, dark brown.

Caryopses

2-2.3 mm, white to brown.

about 1.8 mm long, 1.4 mm wide, ellipsoidal.

Lower

glumes absent;

upper glumes and lower lemmas 5-7-veined, margins pilose;

upper florets stramineous.

glumes absent;

upper glumes shortly pubescent, 5-veined, margins entire;

lower lemmas transversely rugose at maturity, glabrous, 5-veined, margins entire;

upper florets dark glossy brown.

2n

= 20, 40, 50-63.

= 40.

Paspalum dilatatum

Paspalum nicorae

Distribution
from FNA
AL; AR; AZ; CA; CO; DC; FL; GA; IL; KY; LA; MD; MO; MS; NC; NJ; NM; OK; OR; SC; TN; TX; VA; WV; HI; PR
[WildflowerSearch map]
[BONAP county map]
from FNA
AL; FL; GA
[BONAP county map]
Discussion

Paspalum dilatatum is native to Brazil and Argentina. It is now well established in the Flora region, generally as a weed in waste places. It is also used as a turf grass.

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

Paspalum nicorae is native to Brazil, Uruguay, and Argentina. It was introduced to the United States for use in pastures and as a cover crop in waterways. It is now established in the southeastern United States, growing as a weed in pastures, turf, and other disturbed areas.

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

Source FNA vol. 25, p. 579. FNA vol. 25, p. 584.
Parent taxa Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum
Sibling taxa
P. acuminatum, P. almum, P. bifidum, P. blodgettii, P. boscianum, P. caespitosum, P. conjugatum, P. conspersum, P. convexum, P. coryphaeum, P. dissectum, P. distichum, P. fimbriatum, P. floridanum, P. hartwegianum, P. intermedium, P. laeve, P. langei, P. laxum, P. lividum, P. malacophyllum, P. minus, P. modestum, P. monostachyum, P. nicorae, P. notatum, P. paniculatum, P. pleostachyum, P. plicatulum, P. praecox, P. pubiflorum, P. quadrifarium, P. racemosum, P. repens, P. scrobiculatum, P. setaceum, P. unispicatum, P. urvillei, P. vaginatum, P. virgatum, P. virletii, P. wrightii
P. acuminatum, P. almum, P. bifidum, P. blodgettii, P. boscianum, P. caespitosum, P. conjugatum, P. conspersum, P. convexum, P. coryphaeum, P. dilatatum, P. dissectum, P. distichum, P. fimbriatum, P. floridanum, P. hartwegianum, P. intermedium, P. laeve, P. langei, P. laxum, P. lividum, P. malacophyllum, P. minus, P. modestum, P. monostachyum, P. notatum, P. paniculatum, P. pleostachyum, P. plicatulum, P. praecox, P. pubiflorum, P. quadrifarium, P. racemosum, P. repens, P. scrobiculatum, P. setaceum, P. unispicatum, P. urvillei, P. vaginatum, P. virgatum, P. virletii, P. wrightii
Name authority Poir. Parodi
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