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Silver Wormwood

Artemisia ludoviciana

Silver Wormwood, Artemisia ludoviciana, © by Michael Plagens

Photographed near Bumblebee, Yavapai Co., Arizona. August 2008.

SUB-SHRUB: Shrubby near base, but otherwise herbaceous. The plants are typically about a meter tall. Usually a number of upright stems that branch freely from the base.

LEAVES: Leaves are narrowly elyptic, sometimes lobed, and covered with silvery hairs. The herbaceous stems are also so covered giving the whole plant a silvery, silky appearance.

RANGE: Found mostly on the terraces in sycamore canyons and fairly common at low, mid and sometimes the highest elevational ranges. Ranges also across much of North America with considerable variation in leaf size, overall structure and degree of hirsuteness.

FLOWERS: Small heads, barely larger than a pencil eraser, of disc flowers. Yellow florets barely exposed as the surrounding bracts do not open widely and are covered with long, silky trichomes.

FRUIT: Small achene seeds without a pappus mostly ten or fewer per head.

UNARMED

Asteraceae -- Sunflower Family

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Copyright Michael J. Plagens, 1999-2010