An Illustrated Guide to ARIZONA WEEDS

The University of Arizona Press

RED SPRANGLETOP

Illustration

GRASS FAMILY-Gramineae

RED SPRANGLETOP-Leptochloa filiformis (Lam.) Beauv.

DESCRIPTION-Tall or spreading weak annuals, 4 inches to 4 feet high, often reddish or purplish. The leaf blades are thin and flat, and the sheaths bear long slender hairs. The mature flowering tops are extremely variable in length, but are about l/3 to l/2 the length of the stems, and may be 1 l/2 feet long. The very slender branches are 1 to 5 inches long, and spreading at maturity. The tiny spikelets, less than 1/8 inch long, are not awned.

DISTRIBUTION-Red sprangletop is a common weed of roadsides, citrus orchards, ditchbanks, cotton, sorghum, and alfalfa fields, gardens, sandy washes, and dry slopes throughout Arizona, except Navajo and Mohave counties; 100 to 5,000 feet elevation; flowering May to October or November.

BEARDED SPRANGLETOP-Leptochloa fascicularis (Lam.) Gray

DESCRIPTION-Coarse, succulent annual, forming rather large clumps or some- times dwarfs, and only 4 to 6 inches high. The leaf blades are narrow and flat, or inrolled, tubelike, and a bluish-green color.

DISTRIBUTION-Bearded sprangletop is a weed of wet places and alkaline soil, in irrigated crops, along ditches, streams, reservoirs, roadside swales, and brackish water along lakes and rivers in Navajo, Graham, Gila, Pinal, Cochise, and Pima counties; 1,500 to 5,000 feet elevation; flowering May to October or November.

Copyright (c) 1972 The Arizona Board of Regents



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