THE NOMENCLATURE OF SISYRINCHIUM BERMUDIANA AND RELATED NORTH AMERICAN SPECIES

Summary Five species of Sisyrinchium (Iridaceae) are of common occurrence in northeastern North America. A sixth species is endemic to Bermuda. Their rather similar morphology has led to differing applications of the names given the various species. Examination of materials available to the original authors indicates the correct names for these species to be as follows: S. angustifolium Mill. (= S. graminoides Bicknell, S. bermudiana sensu authors), with branched, relatively broad stems, broad leaves, and small blue flowers; S. atlanticum Bicknell, with branched, narrow stems with many geniculate nodes, narrow leaves, usually drying pale green; S. arenicola Bicknell, a provisional name, with branched, narrow stems and few or no geniculate nodes, narrow leaves, drying dark, and often with a fibrous base; S. mucronatum Michx., with very narrow leaves, unbranched and non‐geniculate stems, often purplish spathes, and large violet flowers; S. montanum Greene (= S. angustifolium sensu Bicknell), similar but with somewhat broader leaves, larger capsules, and green spathes; and S. bermudiana L. (= S. iridioides Curtis), the coarse and ornamental, branched, Bermuda endemic.