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4 November 2014 A New Species of Monardella (Lamiaceae) from Southeastern Oregon and Adjacent Idaho, U.S.A.
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Abstract

Monardella angustifolia Elvin, Ertter & Mansfield (Lamiaceae), a new species from southeastern Oregon and adjacent Idaho, is described and illustrated. It occurs on ash tuff outcrops in and near Leslie Gulch in the northern reaches of the Great Basin Desert. The new species is best distinguished by its calyx trichomes, fascicled leaves, and leaf and bract morphology. It is unique in the genus in having very narrow, conduplicate, and often fascicled leaves and being endemic to soils derived from ash tuff. It is most similar morphologically and ecologically to several perennial species of Monardella Benth. in the Mojave Desert ca. 900 km to the south. It shares with them a similar habit, pubescence, branching, and bract and glomerule morphologies.

Mark A. Elvin, Donald H. Mansfield, and Barbara Ertter "A New Species of Monardella (Lamiaceae) from Southeastern Oregon and Adjacent Idaho, U.S.A.," Novon: A Journal for Botanical Nomenclature 23(3), 268-274, (4 November 2014). https://doi.org/10.3417/2013041
Published: 4 November 2014
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