Dieteria canescens var. sessiliflora

(Nuttall) D. R. Morgan & R. L. Hartman

Sida 20: 1396. 2003.

Endemic
Basionym: Dieteria sessiliflora Nuttall Trans. Amer. Philos. Soc., n. s. 7: 301. 1840
Synonyms: Machaeranthera canescens var. sessiliflora (Nuttall) B. L. Turner Machaeranthera sessiliflora (Nuttall) Greene
Treatment appears in FNA Volume 20. Treatment on page 400. Mentioned on page 399.

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.


Phenology: Flowering Aug–Oct.
Habitat: Flats, canyon slopes
Elevation: 600–1800 m

Discussion

Variety sessiliflora is known only along the Snake River and its tributaries.

Selected References

None.

Lower Taxa

None.