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Northern Ontario Plant DatabaseNorthern Ontario Vegetation Type (V-type)Summary: A mixedwood stand dominated by sugar maple and hemlock, with lesser quantities of yellow birch and beech in the canopy. The subcanopy and regeneration layers are dominated by sugar maple, but also have hemlock, yellow birch, and beech. The tall shrub layer is dominated by striped maple and red elderberry, with Canada fly honeysuckle in the low shrub layer. Smaller quantities of mountain maple, beaked hazel, and hobblebush may also occur. Fewer herbs occur in this vegetation type than in C-V15 and C-V16. The most common understory species are spinulose woodfern, rose twisted-stalk, and wild lily-of-the-valley, though starflower, red trillium, drooping woodsedge, and shining clubmoss may occur with less than 50% frequency. This vegetation type is most similar to C-V15 and C-V16, however, C-V17 is less diverse in all layers; it is characterized by the common presence of red elderberry in the shrub layer, and lacks red maple, wild sarsaparilla, and ground pine. Soil & Ecosite Types: The Sugar Maple-Hemlock-Striped Maple Vegetation Type (C-V17) occurs most commonly on dry to fresh soils (S7), but may occasionally be found on moister soils. This vegetation type was described from districts within Site Regions 5E, mainly from Site Districts 5E-9, 5E-10, and 5E-1. Like C-V15 and C-V16, this vegetation type can be found on ecosite types C-ES 28.2 (Sugar Maple-Hemlock-Yellow Birch, fresh to moist) and C-ES 28.1 (Sugar Maple-Hemlock-Yellow Birch, dry to moderately fresh). Note: In sample plots, species listed below occurred with 50% frequency or more, except for those in square brackets, which occurred with 30-49% frequency. Trees: overstoreyShrubs:hemlock (Tsuga canadensis)subcanopy tall shrubsDwarf Shrubs and Herbs:striped maple (Acer pensylvanicum)low shrubs forbsFerns and Fern Allies:rose twisted-stalk (Streptopus lanceolatus)graminoids fernsBryophytes:spinulose woodfern (Dryopteris carthusiana)clubmosses[shining clubmoss (Huperzia lucidula)] Lichens:no species occurs more than 30% of the time common powderhorn (Cladonia coniocraea) |