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Hyssop-leaf Spurge

Chamaesyce hyssopifolia

Photo by Michael Plagens

This photo was taken in Phoenix June 2007 and a higher resolution image is hosted at Wikimedia.

ANNUAL: Warm season annual rarely more than 50 cm tall. An upright spurge with white sap.

LEAVES: Largest leaves over 15 mm, with serrated edges. Opposite on stem. Often with reddish splotches.

RANGE: Common weed in urban and agricultural areas in the Sonoran Desert. Requires more water than is generally available in the desert itself.

FLOWERS: Minute flowers borne in groups within an involucre. What appears to be petals are petal-like glands borne on the rim of the involucre.

UNARMED: No thorns, but sap can be a irritant.

FRUIT: Small capsules, 2 mm, are three-parted.

Euphorbiaceae -- Spurge Family

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Copyright Michael J. Plagens, 1999-2008