Family: Asteraceae
[Dieteria sessiliflora Nutt., more... ]
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Annuals, biennials, or short-lived perennials. Stems 1+, erect, canescent, usually gland-dotted; branches ascending. Mid leaf blades linear-lanceolate to linear. Peduncles 0 (heads sessile) or shorter than involucres. Involucres narrowly to broadly turbinate, 6-10(-12) mm. Phyllaries in 4-7 series, spreading to reflexed, apices often canescent, stipitate-glandular. Ray florets pistillate, fertile. Cypselae sparsely to moderately appressed-hairy.
Flowering Aug-Oct. Flats, canyon slopes; 600-1800 m; Idaho.
Variety sessiliflora is known only along the Snake River and its tributaries.