[Members of the Sunflower Family Having Daisy-like Flower Heads Found West of the Cascade Mountains of Oregon and Washington]

Hoary Asters West of the Cascade Mountains of Oregon and Washington

The Genus Dieteria

Synonym: The Genus Machaeranthera

Hoary-aster, Hoary Aster: Dieteria canescens var. canescens (Synonyms: Aster canescens, Aster shastensis var. glossophyllus, Aster shastensis var. latifolius, Aster canescens var. viscosus, Machaeranthera canescens var. canescens, Machaeranthera canescens ssp. canescens, Machaeranthera shastensis var. glossophylla, Machaeranthera shastensis var. latifolia) - Involucre of Hoary-aster, Hoary Aster: Dieteria canescens var. canescens (Synonyms: Aster canescens, Aster shastensis var. glossophyllus, Aster shastensis var. latifolius, Aster canescens var. viscosus, Machaeranthera canescens var. canescens, Machaeranthera canescens ssp. canescens, Machaeranthera shastensis var. glossophylla, Machaeranthera shastensis var. latifolia)

Hoary Aster: Dieteria canescens var. canescens

Hoary Aster: Dieteria canescens var. canescens (Synonyms: Aster canescens, Aster shastensis var. glossophyllus, Aster shastensis var. latifolius, Machaeranthera canescens var. canescens, Machaeranthera shastensis var. glossophylla, Machaeranthera shastensis var. latifolia) - Has ray flowers. Only observed near Big Red Mountain on the Siskiyou Crest.

Rayless Shasta Aster: Dieteria canescens var. shastensis (Synonyms: Aster shastensis, Aster shastensis var. eradiatus, Machaeranthera canescens var. shastensis, Machaeranthera shastensis, Machaeranthera shastensis var. eradiata, Machaeranthera shastensis var. shastensis) - No ray flowers.

Paul Slichter E-mail