''Eucephalus glaucescens'' is a North American species of flowering plant in the family

Asteraceae The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae w ...

known by the common name Klickitat aster. It grows on rocky slopes and in subalpine meadows at high elevations on and near Mount Adams in the south-central part of the US State of

Washington Washington commonly refers to: * Washington (state), United States * Washington, D.C., the capital of the United States ** A metonym for the federal government of the United States ** Washington metropolitan area, the metropolitan area centered on ...

. ''Eucephalus glaucescens'' is a perennial herb up to tall, with a woody

caudex A caudex (plural: caudices) of a plant is a stem, but the term is also used to mean a rootstock and particularly a basal stem structure from which new growth arises.pages 456 and 695 In the strict sense of the term, meaning a stem, "caudex" is m ...

. Stems are hairless. Leaves are whitish and waxy. One plant will usually produce 5-60

flower heads A pseudanthium (Greek for "false flower"; ) is an inflorescence that resembles a flower. The word is sometimes used for other structures that are neither a true flower nor a true inflorescence. Examples of pseudanthia include flower heads, compos ...

in a large array. Each head has 8-13 purple

ray florets The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae w ...

surrounding numerous yellow

disc floret The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae w ...

s.Flora of North America, ''Eucephalus glaucescens'' (A. Gray) Greene, 1896. Klickitat aster
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References

External links

photo of herbarium specimen at Missouri Botanical Garden, collected in Washington in 1883, probable type material for ''Aster engelmannii var. glaucescens/Eucephalus glaucescens''
photos {{Taxonbar, from=Q15596787 Astereae Flora of Washington (state) Plants described in 1884