An Illustrated Guide to ARIZONA WEEDS

The University of Arizona Press

GORDON BLADDERPOD

Illustration

MUSTARD FAMILY-Cruciferae

GORDON BLADDERPOD-Lesquerella gordoni (Gray) Wats.

DESCRIPTION-A low bushy, erect, spreading or prostrate annual or winter annual, 1/4 to 2 feet high, reproducing only by seeds. The narrow lanceshaped or spatulashaped leaves are 1/12 to 1/2 inch broad, mostly smooth edged, sometimes toothed; the basal leaves may be lobed. The grayish starlike hairs are often so dense as to give the plant a silvery appearance.

The bright yellow flowers are 1/4 to l/3 inch long, often fading reddish. The inflated ballshaped pods, 1/8 to 1/5 inch in diameter, are tipped by a slender point (the persistent style) 1/12 to l/8 inch long, and are hairy or hairless. The stalks of the mature pods are spreading, often curved twice in opposite directions like the letter "S". The reddish brown, flattened fanshaped seeds are about 1/12 inch broad, and 1/16 inch long, with crinkled edges. There are several seeds in each half of the pod.

DISTRIBUTION-An abundant native plant, Gordon bladderpod is a weed in irrigated fields, roadsides, yards, disturbed soil, and overgrazed desert ranges. It also grows in river bottoms, mesas, plains, slopes, and canyons throughout southern Arizona from Greenlee to Mohave counties and southward; 110 to 5,000 feet elevation; flowering February to May.

Copyright (c) 1972 The Arizona Board of Regents



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