Erigeron radicatus
 
Dwarf Fleabane

Fertile Shoot Upright

Hole in the Wall, North of Big Muddy Lake
21-May-2019

The dead leaves have been removed from this specimen. Note the leaves are entire and mostly basal.   Note also the solitary flower head with well developed ray florets.

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Radicatus: Answers to key questions in Budd's Flora leading to this species. 
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Plants usually less than 20 cm high; NOT [Plants usually more than 20 cm high]

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Leaves mainly basal

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Stem leaves 0-3; NOT [Stem leaves numerous]

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Leaves entire or merely 3-toothed at apex; NOT [Leaves deeply dissected into at least 2 or 3 lobes]

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Heads solitary; NOT [Heads 2 to many, or both]

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Heads with well-developed ray florets; NOT [Heads discoid or with short inconspicuous ray florets]