. The Canadian field-naturalist. Natural history. 2001 Donovan and Douglas: Status of Snake-root Sanicle 467. Figure 1. Illustration of of Sanicula arctopoides. (Line drawing by Karen Uldal-Eckman) Mediterranean climate that differs markedly from the rest of the province, contributing to the area's warm, dry summers and mild, wet winters. The dominant forest vegetation in this region is Douglas-fir {Pseudotsuga menziesii), a fire-climax species that occurs in a wide range of sites from rocky outcrops to moist valley bottoms. In areas characterised by low rainfall, shallow soils and rock outcro
. The Canadian field-naturalist. Natural history. 2001 Donovan and Douglas: Status of Snake-root Sanicle 467. Figure 1. Illustration of of Sanicula arctopoides. (Line drawing by Karen Uldal-Eckman) Mediterranean climate that differs markedly from the rest of the province, contributing to the area's warm, dry summers and mild, wet winters. The dominant forest vegetation in this region is Douglas-fir {Pseudotsuga menziesii), a fire-climax species that occurs in a wide range of sites from rocky outcrops to moist valley bottoms. In areas characterised by low rainfall, shallow soils and rock outcrops, Garry Oaks {Quercus garryana) form open stands of trees mixed with grass-dominated meadows. In addition to S. arctopoides, the rock outcrop and vernal seep habitats found within the rain shadow zone favour the growth of many other rare plants which are also at the northern limit of their distribution. Sanicula arctopoides occurs on low, dry, grassy coastal bluffs along the shoreline in the Victoria area. All sites are in vernal seeps on gravelly or rocky outcrops near the ocean where the plants are exposed to salt spray, sun and wind. Growing in shallow soils over bedrock, the plants have a low cushion form that provides protection from wind and desiccation and concentrates solar energy at soil level, warming the roots. Trial Island Ecological Reserve supports the largest and most vigorous extant population of S. arctopoides. The plants grow on open, west facing, grassy banks close to the shore and on rocky moss ledges with spring seepage. The population is part of a rich meadow community with Nodding Onion {Allium cernuum). Spring Gold (Lomatium utricula- tum) and Yarrow {Achillea millefolium). This site is particularly important in terms of long-term conser- vation because the habitat is not as fragmented as at other sites and it supports the growth of other rare plant species. At the Alpha Island Ecological Reserve, Sanicula arctopoides is associated with Barestem Desert
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