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sec. Gleason Cronquist 1991
common name: narrowleaf vervain
Steven J. Baskauf
U.S. 41A, Pleasant View, Cheatham County, Tennessee, US
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whole plant - in flower - general view
stem - showing leaf bases
leaf - basal or on lower stem
leaf - on upper stem
inflorescence - whole - unspecified
inflorescence - frontal view of flower
Gleason Cronquist 1991 =
Gleason, Henry A. and Arthur Cronquist, 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. The New York Botanical Garden, Bronx, NY, US.
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