Helianthus occidentalis Riddell
Family - Asteraceae
Stems - No info. yet.
Upper stem.
Lower stem.
Leaves - No info. yet.
Basal leaves.
Cauline leaves.
Inflorescence - No info. yet.
Involucre - No info. yet.
Involucre.
Ray flowers - No info. yet.
Disk flowers - No info. yet.
Flowering - July - September.
Habitat - Glades, prairies, dry meadows, fields, rocky open woods.
Origin - Native to U.S.
Other info. - This small species can be found in the Ozark region of Missouri. This plant can be identified in the field by its small size (it grows only to about 1m tall), its mostly basal leaves, and its thin involucre bracts (phyllaries). The flowering stems of this species are naked or have reduced leaves for most of their total length.
Our plants belong to variety occidentalis.
Photographs taken off Hwy 21, Reynolds County, MO., 8-20-03.
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