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Dieteria canescens

Dieteria canascens (formerly Machaeranthera canescens)[1] is an annual plant or short lived perennial plant in the Sunflower of Aster Family (Asteraceae), known by the common names hoary tansyaster and hoary-aster.[2]

"Canascens" means "gray-hairy".[3]

Range and habitat[edit]

It is native to western and central North America, where it is a common plant in many regions and habitat types.

Growth pattern[edit]

It is a woolly-haired, glandular annual or perennial herb with one or more branching stems sometimes exceeding a meter in height.

Leaves and stems[edit]

The linear to oblong leaves may reach 10 centimeters long near the base of the stems, their edges usually serrated or toothed.

The stems are glandular with short hairs.[2]

Flowers and fruits[edit]

The inflorescence bears one or more flower heads lined with several layers of pointed, curling or curving phyllaries. The head has a center of many yellow disc florets and a fringe of blue or purple ray florets each 1 to 2 centimeters long. The fruit is an achene around 3 millimeters in length tipped with a pappus of long hairs.

A number of insects can often be found in the flowers.[2]

Uses[edit]

The Zuni people take an infusion the whole plant of subspecies canescens, variety canescens and rub it on the abdomen as an emetic. [4]

References[edit]

  1. ^ Mojave Desert Wildflowers, Pam MacKay, 2nd Ed., p 314
  2. ^ a b c Mojave Desert Wildflowers, Pam MacKay, 2nd Ed., p 39
  3. ^ Great Basin Wildflowers, Laird R. Blackwell, 2006, p. 26
  4. ^ Stevenson, Matilda Coxe 1915 Ethnobotany of the Zuni Indians. SI-BAE Annual Report #30 (p. 56)

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