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Family
Asteraceae (Magnoliophyta)
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Scientific Name
Machaeranthera pulverulenta var. vacans A.Nelson
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Primary Citation
Bot. Gaz. (Crawfordsville) 56: 70. 1913 
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Type Specimens
Specimen 1: Syntype -- E. P. Walker 434
Specimen 2: Syntype -- E. P. Walker 537
Specimen 3: Syntype -- E. P. Walker 360
