Panicum antidotale
Panicum trichoides
blue panic, blue panic grass, blue panicum
small-flower panicgrass, tropical panicgrass
50-300 cm tall, 2-4 mm thick, often compressed, erect or ascending, hard, becoming almost woody;
nodes swollen, glabrous or pubescent;
internodes glabrous, glaucous.
15-100 cm tall, 0.5-1(2) mm thick, sprawling to erect, without cormlike bases, freely branching and rooting from the lower nodes;
nodes prominent, glabrous or pubescent;
internodes not succulent, pilose.
not keeled, shorter than or equal to the internodes, glabrous or the lower sheaths at least partially pubescent, hairs papillose-based;
ligules 0.3-1.5 mm;
blades 10-60 cm long, 3-20 mm wide, elongate, flat, abaxial surfaces and margins scabrous, adaxial surfaces occasionally pubescent near the base, with prominent, white midveins, bases rounded to narrowed.
shorter than the internodes, rounded, hairs papillose-based;
collars pilose;
ligules 0.2-0.5 mm;
blades 2-7 cm long, 5-20 mm wide, 4-6 times longer than wide, lanceolate, thin, flat, sparsely to densely pilose, hairs papillose-based, bases asymmetrically cordate to subcordate, lower margins ciliate, papillose.
10-45 cm, to 1/2 as wide as long, open or somewhat contracted, with many spikelets;
branches 4-12 cm, opposite or alternate, ascending to spreading;
pedicels 0.3-2.5 mm, scabridulous to scabrous, appressed to diverging less than 45° from the branch axes.
4-24 cm, almost as wide as long, diffuse, partially included or exerted;
primary branches to 10 cm, alternate, ascending to reflexed, branching in the distal 2/3;
pedicels 9-20 mm, threadlike.
2.4-3.4 mm long, 1-1.3 mm wide, ellipsoid-lanceoloid to narrowly ovoid, often purplish, glabrous, acute.
1-1.4 mm long, 0.5-0.6 mm wide, not secund, lanceoloid to narrowly ovoid, plano-convex in side view, sparsely pubescent.
1.4-2.2 mm, 1/3 – 1/2 as long as the spikelets, 3-5-veined, obtuse;
upper glumes and lower lemmas subequal, glabrous, 5-9-veined, margins scarious, acute;
lower florets staminate;
upper florets 1.8-2.8 mm long, 0.9-1.1 mm wide, smooth, lustrous, acute.
0.4-0.8 mm, 1/3 – 1/2 as long as the spikelets, 1-3-veined, subacute;
upper glumes 0.8-1.2 mm, arising 0.2 mm above the lower glumes, 3-5-veined;
lower florets sterile;
lower lemmas 0.1-0.2 mm longer than the upper glumes, 3-5-veined;
lower paleas 0.5-0.8 mm, hyaline;
upper florets 0.8-1.2 mm long, 0.4-0.6 mm wide, finely rugose, lemmas strongly convex.
= 18, 36.
= 18.
Panicum antidotale
Panicum trichoides
Panicum antidotale is native to India. It is grown in the Flora region as a forage grass, primarily in the southwestern United States. It is now established in the region, being found in open, disturbed areas and fields.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Panicum trichoides grows in moist, often weedy fields, woodlands, and savannahs of Mexico, Central and tropical America, and the Caribbean. It has been found, as a weed, in Brownsville and Austin, Texas, and is probably introduced to the Flora region. It has also been introduced into Africa, tropical Asia, and the Pacific islands. In the Flora region, it flowers from August through October.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
CA
WildflowerSearch
iNaturalist
USDA Plants Database
