Setaria faberi

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1391348
Taxonomy
Kingdom: Plantae
Phylum: Magnoliophyta
Class: Liliopsida
Order: Cyperales
Family: Poaceae
Genus: Setaria
Species: S. faberi
Scientific Name
Setaria faberi
Herrm.
Common Names

giant foxtail, Japanese bristlegrass, Chinese foxtail, Chinese millet, giant bristlegrass, nodding foxtail

Overview

Appearance

Setaria faberi is an annual grass that can reach 2-5 ft. (0.61-1.5 m) in height.

Foliage

Leaves are up to 16 in. (41 cm) long, 0.6-1 in. (15-25 mm) wide.

Sheath

Round with hair on margins.

Blade

Short hairs cover the upper surface.

Ligule

Fringe of hairs

Auricles

None.

Flowers

Flowering occurs in late summer to early fall, when a green (eventually straw colored), bristly inflorescence develops. The inflorescence resembles a foxtail, hence the common name. ===Fruit===The fruit are small flattened ovoids with hard coats. They usually germinate in late spring to early summer.

Ecological Threat

Setaria faberi is native to Asia and was accidentally introduced in the United States in the 1920s as a contaminant of other grain. Plants invade disturbed sites such as roadsides, landfills, fence rows and right of ways.

Herbicide Resistance[1]

Populations of this plant exist in the United States that are resistant to ACCase inhibitors (A/1), ALS inhibitors (B/2), and Photosystem II inhibitors (C1/5).

Resources

  1. Heap, I., The International Survey of Herbicide Resistant Weeds. Online. Internet. Friday, November 15, 2013. The International Survey of Herbicide Resistant Weeds. Online. Internet.

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