CHROMOSOME NUMBERS AND TAXONOMIC NOTES ON NORTHERN GRASSES: II. TRIBE FESTUCEAE

摘要

Chromosome numbers and voucher specimens are recorded for some collections of the tribe FESTUCEAEDumort., mainly collected in Canada. The somatic chromosome numbers of the following are recorded: (1a)Arctagrostis arundinacea(Trin.) Beal var.arundinacea, 2nensp;=ensp;28, 2nensp;=ensp;29, and 2nensp;=ensp;30; (1b)Arctagrostis arundinacea(Trin.) Beal var.crassispicaBowden, 2nensp;=ensp;56; (1c)Arctagrostis latifolia(R.Br.) Griseb., 2nensp;=ensp;56. (2)Beckmannia syzigachne(Steud.) Fern., 2nensp;=ensp;14. (3)Brachyelytrum erectum(Schreb.) Beauv., two vars., 2nensp;=ensp;22. (4a)Bromus ciliatusL., 2nensp;=ensp;14; (4b)Bromus inermisLeyss., two subspecies and two vars., 2nensp;=ensp;56; (4e)Bromus kalmiiA. Gray, 2nensp;=ensp;14; (4d)Bromus porteri(Coult.) Nash, 2nensp;=ensp;14; (4c)Bromus tectorumL., 2nensp;=ensp;14. (5)Catabrosa aquatica(L.) Beauv. var.laurentianaFern., 2nensp;=ensp;20. (6)Dactylis glomerataL., 2nensp;=ensp;28. (7)Distichlisstricta(Torr.) Rydb., 2nensp;=ensp;40. (8a)DupontiafisheriR.Br, subsp.fisheri, 2nensp;=ensp;132; (8b)Dupontia fisheriR.Br, subsp.psilosantha(Rupr.) Hulteacute;n, 2nensp;=ensp;44. (9)Eremopoa persica(Trin.) Roshev., 2nensp;=ensp;28. (10a)Festuca altaicaTrin., 2nensp;=ensp;28; (10b)Festuca baffinensisPolunin, 2nensp;=ensp;28; (10c)Festuca brachyphyllaSchultes, 2nensp;=ensp;42 and one collection, 2nensp;=ensp;44; (10d)Festuca elatiorL., 2nensp;=ensp;14; (10e)Festuca obtusaBieler, 2nensp;=ensp;42; (10f)Festuca prolifera(Piper) Fern. var.lasiolepisFern., 2nensp;=ensp;50; (10g)Festuca rubraL., 2nensp;=ensp;42; (10h)Festuca saximontanaRydb., 2nensp;=ensp;42; (10i)Festuca scabrellaTorr. ex Hook., two vars., 2nensp;=ensp;56 and 2nensp;=ensp;28. (11a)Glyceria borealis(Nash) Batchelder, 2nensp;=ensp;20; (11b)Glyceria canadensis(Michx.) Trin., 2nensp;=ensp;60; (11c)Glyceria grandisS. Wats., 2nensp;=ensp;20; (11d)Glyceria melicaria(Michx.) Hubb., 2nensp;=ensp;40; (11e)Glyceria pulchella(Nash) K. Schum., 2nensp;=ensp;20; (11f)Glyceria striata(Lam.) Hitchc, 2nensp;=ensp;20; (11g)Glyceriatimes;gatineauensisBowden (G. melicariatimes;G. striata), 2nensp;=ensp;30; (11h)Glyceriatimes;ottawensisBowden (G. canadensistimes;G. striata), three nothomorphs, 2nensp;=ensp;42, 2nensp;=ensp;46, and 2nensp;=ensp;48. (12)Lolium rigidumGaud., 2nensp;=ensp;14. (13a)Phippsiaalgida(Sol.) R.Br., 2nensp;=ensp;28; (13b)Phippsia concinna(Th. Fries) Lindeb., 2nensp;=ensp;28. (14)Pleuropogon sabineiR.Br., 2nensp;=ensp;42. (15)Schizachnepurpurascens(Torr.) Swallen, 2nensp;=ensp;20. (16)Torreyochloa fernaldii(Hitchc.) Church, 2nensp;=ensp;14.