Digitaria ciliaris

southern crabgrass, southern crab grass, fingergrass, henry's crabgrass, kukaepua'a, saulangi, smooth crabgrass, tropical crabgrass
Family

Poaceae

Leaf Arrangement

alternate

Leaf Type

simple

Leaf Shape

linear

Growth Form

graminoid

Flower Petals

no petals

Flower Month

May - November

Height (meters)

0.2 - 0.9

Milky Sap

No

Armed/Unarmed

Unarmed

Origin

native

Lifespan

annual

Growing Season

Warm season


Wetland Class

FAC

Prairie Coefficient of Conservatism

0

Field Characters

Easily mistaken for D. sanguinalis which is the most common of southern crabgrasses. It has densely hairy foliage and short, transparent spines on the nerves of the sterile lemma, while the foliage of D. ciliaris is hairless to sparsely papilose-pilose foliage and the nerves on the sterile lemma are hairless.

Animal Use

This information is for the genus Digitaria with note that D. ischaemum, D. anguinalis, and D. filiformis are especially valuable to wildlife. Animals that eat its seeds: Ground dove, Mourning dove, Bobwhite quail, Wild turkey, Cowbird, Slate-colored junco, American pipit, Chipping, field, savannah and tree sparrows, Clay-colored and english sparrow, Pine-woods, song, swamp and white-crowned sparrows. Animals that eat the plants: Cottontail rabbit (Martin et al. 1951).

Natural History

The genus name Digitaria refers to the Latin word "digitus," or finger-like, and describes the type of seed head common to this group. A notorious weed of lawns found throughout the temperate and tropical regions of the world including most of the United States. Digitaria ciliaris is the first species of Digitaria to bloom in Louisiana.

Habitat

Weed in waste ground, lawns, gardens, and fields.