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1 April 2009 Aulacoseira pardata sp. nov., A. nivalis comb. nov., A. nivaloides comb. et stat. nov., and Their Occurrences in Western North America
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Abstract

The morphology of several “low-mantle” species of Aulacoseira found in Western North America is studied. A new taxon, Aulacoseira pardata sp. nov., is described. Aulacoseira pardata is similar to Aulacoseira distans and Aulacoseira lirata and has been confused in the past with these two taxa. Aulacoseira distans var. nivalis and Aulacoseira distans var. nivaloides bear significant morphological differences from Aulacoseira distans. These two varieties are therefore elevated to species status: Aulacoseira nivalis comb. nov. and Aulacoseira nivaloides comb. et stat. nov., respectively.

New taxa: Aulacoseira pardata English and Potapova

New combinations: Aulacoseira nivalis, Aulacoseira nivaloides.

Jonathan English and Marina Potapova "Aulacoseira pardata sp. nov., A. nivalis comb. nov., A. nivaloides comb. et stat. nov., and Their Occurrences in Western North America," Proceedings of the Academy of Natural Sciences of Philadelphia 158(1), 37-48, (1 April 2009). https://doi.org/10.1635/053.158.0102
Published: 1 April 2009
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