CHROMOSOME NUMBERS AND TAXONOMIC NOTES ON NORTHERN GRASSES: I. TRIBE TRITICEAE

Abstract

Chromosome numbers and voucher specimens are recorded for some collections of the tribe TRITICEAE Dumort., mainly collected in Canada. The somatic chromosome numbers of the following are recorded: (1) Elymus canadensis L., 2n = 28; (2) Elymus cinereus Scribn. & Merr., 2n = 28 and 2n = 56; (3) Elymus glaucus Buckl., 2n = 28; (4a) Elymus innovatus Beal subsp. innovatus, 2n = 28; (4b) Elymus innovatus Beal subsp. velutinus Bowden, 2n = 56; (5) Elymus wiegandii Fern., 2n = 28; (6) Eremopyrum triticeum (Gaertn.) Nevski, 2n = 14; (7) Sitanion hystrix (Nutt.) J. G. Smith, 2n = 28; (8) × Agrohordeum macounii (Vasey) Lepage, 2n = 28; (9) × Agroelymushirtiflorus (Hitchc.) Bowden, 2n = 28; and (10) × Agroelymus ungavensis (Louis-Marie) Lepage, 2n = 28. Because var. coreensis Hack. is an earlier varietal name, Elymus mollis Trin. var. coreensis (Hack.) Bowden replaces E. mollis Trin. var. japonicus Bowden as the name for the variety that occurs on the shores of the Sea of Japan.