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natural areas inventory - Niagara Peninsula Conservation Authority

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EXCLUDED SPECIESChecklist of the Vascular Plants of <strong>Niagara</strong> Regional Municipality, Ontario(M.J. Oldham March 2010)SCIENTIFIC NAME COMMON NAME NIAGARA NOTES COSEWIC MNR FAMILYCarya tomentosa (Poiret) Nutt. Mockernut HickoryLocal reports (e.g. Macoun 1883-1892, Panton 1890, Cameron 1895,Hamilton 1943) are probably based on other species of Carya. Caryatomentosa is not confirmed from Ontario (Morton and Venn 1990).JUGLANDACEAECeltis tenuifolia Nutt.Dwarf HackberrySeveral shrubs discovered in 2009 by Mary Gartshore from along therim of the <strong>Niagara</strong> Gorge may be this species or possibly a similarspecies escaped from cultivation.THR THR ULMACEAECerastium velutinum Raf.Long-hairyChickweedA recent record (NAI database) is probably based on anotherCerastium species. Cerastium velutinum is rare in Ontario and notknown from <strong>areas</strong> near <strong>Niagara</strong> (Oldham and Brinker 2009). =Cerastium arvense var. velutinum.CARYOPHYLLACEAECirsium altissimum (L.) SprengelTall ThistleReported by Panton (1890) from Queen Victoria Park, <strong>Niagara</strong> Falls,and a Pease collection from Queenston in 1884 is apparently at BUF(Eckel 2001), however this species is not reliably known from Ontario(Morton and Venn 1990).ASTERACEAECirsium pumilum (Nutt.) SprengelPasture ThistleReports from <strong>Niagara</strong> (e.g. Eckel 2001, NAI database) are unlikely, asthis species (var. hillii) is not known in Ontario from the CarolinianZone.THR THR ASTERACEAECommelina microcarpus L.Day-flowerA report of Commelina microcarpus L., Day-flower, by Riley et al.(1996) from Homer Escarpment is presumably based on Commelinacommunis.COMMELINACEAECornus mas L.Cornelian CherryReported from Dufferin Islands based on B. Miller #48 (TRT?) from1952 (Heimburger 1955). Not known from outside cultivation inOntario (Morton and Venn 1990).CORNACEAECrataegus compacta Sarg. Hawthorn A record in the NAI database requires verification. ROSACEAECrataegus dilatata Sarg.HawthornQueenston, Macoun (CAN) in 1891; <strong>Niagara</strong>-on-the-Lake, Phipps(UWO) in 1977 (ARVPO database). Local records are placed inCrataegus coccinioides (J.B. Phipps, 2007, FNA draft).ROSACEAECrataegus disperma AsheHawthornQueenston, W. Scott (TRT) in 1901. Considered to be anintersectional hybrid (J.B. Phipps, 2007, FNA draft).ROSACEAECrataegus flabellata (Bosc exSpach) K. KochFan-shaped HawthornLocal reports (e.g. Soper and Heimburger 1982, Eckel 2001, NAIdatabase) probably refer to other Crataegus species, since C. flabellatais not known west of Toronto (Phipps and Muniyamma 1980; J.B.Phipps pers. com. 1993).ROSACEAECrataegus persimilis Sarg.Hawthorn<strong>Niagara</strong>-on-the-Lake, several specimens at UWO collected between1977 and 1981 (ARVPO database). Considered to be an intersectionalhybrid (J.B. Phipps, 2007, FNA draft).ROSACEAENatural Heritage Areas Inventory, 2010 9-212

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