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natural areas inventory - Niagara Peninsula Conservation Authority

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Checklist of the Vascular Plants of <strong>Niagara</strong> Regional Municipality, Ontario(M.J. Oldham March 2010)SCIENTIFIC NAME COMMON NAME NIAG NIAGARA NOTES HAMI HANO COSEWIC MNR SRANK FAMILYTypha x glauca Godron(T. angustifolia X T.latifolia)hyb Pt. Abino <strong>Peninsula</strong> (Macdonald 1990). C C S4? TYPHACEAEUlmus americana L. American Elm C C C S5 ULMACEAEUlmus glabra Hudson Scotch Elm IRNear Frenchman's Creek, Fort Erie, M.J.Oldham #7844 (TRTE, det. P.W. Ball) in -- -- SE1 ULMACEAE1987.Ulmus pumila L. Siberian Elm IU I -- SE3 ULMACEAEUlmus rubra Muhlenb. Slippery Elm UVery uncommon to rare tree in <strong>Niagara</strong>.Strongly confined to the <strong>Niagara</strong> andOnondaga Escarpments (A.C. GarofaloC U S5 ULMACEAEpers. comm. 2010).Ulmus thomasii Sarg. Rock Elm RRare in woods, often floodplains,regenerating rocky fields, andhedgerows. Seldom common whenfound. <strong>Niagara</strong> Parks System (as U.racemosa), Cameron (1895). (As U.racemosa) "a newly felled tree, noticednear Fort Erie, Ont., April (1883),"Day (1883). "... to be found in theGlen," Hamilton (1943). J. Jalava #91-122 (TRT) from 15 Mile Creek ANSIC VU S4? ULMACEAEUrtica dioica L. ssp. dioicaUrtica dioica L. ssp.gracilis (Aiton) SelanderEuropean StingingNettleAmerican StingingNettleIRCin 1991."suprisingly abundant on a piece of oldfarmland at Navy Island, where nearly anacre of this plant may be seen. Isolatedspecimens have been observed in thewoods to the rear of the greenhouses inQueen Victoria Park," Hamilton (1943)."Dufferin Islands," sight record, Yaki(1970).Common and widespread in moist,shaded woodlands and thickets.Frequently a dominant on woodedfloodplains. = Urtica gracilis, U.procera.I -- SE2 URTICACEAEC C S5 URTICACEAENatural Heritage Areas Inventory, 2010 9-200

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