Arizonensis >>> Sonoran Desert Naturalist >>> Field Guide >>> Sonoran Desert Flora >>> Brassicaceae >>> Descurainia pinnata
Photographed at Vulture Peak, Maricopa Co., Arizona, USA. March 2008.
LEAVES: Leaves are thrice - or more - pinnately divided. Ultimate segments are almost minute.
This photo from a plant at South Mountain in Phoenix. Resting on the leaf is a very small fly which could be a kind of leaf miner, f. agromyzidae.
ANNUAL: One or a few tall leafy stems exceptionally reaching
one meter tall. A spring annual; few plants last beyond May in the
This is one of the mustard species used as a food plant by the caterpillars of Sara Orange-tip butterflies (Anthocharis sara).
Brassicaceae -- Mustard Family
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