TY - JOUR AU - Zika, Peter F. AU - Tucker, Gordon C. PY - 2017/07/24 Y2 - 2024/03/28 TI - Variation in Linnaea borealis (Linnaeaceae) across North America and Greenland JF - Journal of the Botanical Research Institute of Texas JA - J. Bot. Res. Inst. Texas VL - 11 IS - 1 SE - SYSTEMATICS DO - 10.17348/jbrit.v11.i1.1139 UR - https://journals.brit.org/jbrit/article/view/1139 SP - 67-79 AB - <p>Three subspecies of <em>Linnaea borealis</em> (Linnaeaceae) are reported from North America. We reviewed the literature and herbarium specimens, and were able to consistently recognize two taxa in the herbarium and in nature. Floral characters distinguish the two subspecies. <em>Linnaea borealis</em> subsp. <em>borealis</em> is widespread across Eurasia, and is common in the Aleutian Islands and mainland Alaska. <em>Linnaea borealis</em> subsp. <em>longiflora</em> is represented in eastern and southeastern Alaska, south to California, and east to the Atlantic and Greenland, and includes plants called subsp. <em>americana.</em> PCA and statistical analyses support the recognition of two infraspecific taxa. Lectotypes are designated for <em>Linnaea borealis</em> var. <em>longiflora</em> and <em>Linnaea borealis</em> var. <em>longiflora</em> forma <em>orientalis.</em> Also, a neotype is chosen for <em>Linnaea americana.</em></p> ER -