Kentucky Plant Atlas




Record uncertain    No county information
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Alismataceae Alisma triviale (plantago-aquatica var. americana)
Alisma triviale Pursh
ALI: no HAB: n/a, n/a, n/a, n/a ABU: n/a, n/a, 0
This widespread northern and western species remains unknown south of the Ohio Rv. and east of the lower Mississippi Rv. (K). It was reported from Ky. by Pr as A. plantago-aquatica L. var. americana J.A. Schultes, and by Gunn (1968) as A. triviale. However, no coll. has been located. Diagnostic characters differ between treatments (F, Cr, FNA 22, Y, W). Compared to subcordatum, triviale usually has larger petals (ca. 3.5-6 x 3-4 mm versus 1.5-3 x 1.5-2 mm), larger fruting heads (ca. 4-7 mm wide versus 2-4 mm), and larger achenes (ca. 1.5-2.2 mm long versus 2.1-3 mm); 2n = 28 versus 14.