Morus rubra (Red Mulberrry) are three trees at Mount Pleasant Cemetery. This species has been found in 18 Morus rubra locations in southern Ontario, but only 8 of these sites contain five or more individuals. Land clearing and the altering of drainage patterns are the main threats to However, the Morus rubra. presence of (white mulberry), an aggressive exotic, is also thought to have a negative Morus alba impact on this species as the two often hybridize. While the culling of has been Morus alba attempted, it did not prove successful due to the competitive advantage of which Morus alba allows the species to outcompete This species is currently listed as threatened by Morus rubra. COSEWIC and SARA (Government of Canada, 2016). Species at Risk in Canadian Arboretums Table 2 gives a list of every tree species at risk found in each of the nine arboreta and botanical garden collections. This table also includes the total number of tree species at risk found in each of the nine collections as well as the total number of individual tree species at risk found in each collection. Table 2: Species at Risk in Canadian Arboretums Combined Total total Arboretum or Tree species number number of botanical Location at risk held in of tree individuals garden the collection species of these at risk species
Morus rubra (Red Mulberrry) are three Morus rubra trees at Mount Pleasant Cemetery. This species has been found in 18 locations in southern Ontario, but only 8 of these sites contain five or more individuals. Land clearing and the altering of drainage patterns are the main threats to Morus rubra. However, the presence of Morus alba (white mulberry), an aggressive exotic, is also thought to have a negative impact on this species as the two often hybridize. While the culling of Morus alba has been attempted, it did not prove successful due to the competitive advantage of Morus alba which allows the species to outcompete Morus rubra. This species is currently listed as threatened by COSEWIC and SARA (Government of Canada, 2016). Species at Risk in Canadian Arboretums Table 2 gives a list of every tree species at risk found in each of the nine arboreta and botanical garden collections. This table also includes the total number of tree species at risk found in each of the nine collections as well as the total number of individual tree species at risk found in each collection. Table 2: Species at Risk in Canadian Arboretums Arboretum or botanical garden Location Tree species at risk held in the collection Total number of tree species at risk Combined total number of individuals of these species