Rare plants to protect
The summit of Mont Sainte-Anne is covered with a forest of balsam fir-white birch type. There are rare plants in Quebec: arctic-alpine plants.
The Mont Sainte-Anne and Mont Blanc mountain ranges are part of the bioclimatic sub-domain of the fir-white birch forest in the east. The forest landscape is dominated by stands of fir and white spruce, mixed with white birch on the mesic sites (habitat with medium humidity).
The Mont Sainte-Anne and Mont Blanc areas are home to several species of interest, including endemic or rare plants from the Gaspé Peninsula. Of these, some are calcareous vascular plants (which grow well in calcareous soil, rich in carbonates) from open natural environments.
Others are arctic-alpine species found in northern Quebec. Low elevation limestone cliffs also contain many rare bryophytes (such as mosses) and the escarpment surrounding Mount St. Anne is
recognized as one of the most important sites in the Gulf of St. Lawrence.
The arctic-alpine and subalpine rare plants, which followed the retreat of the last glacier about 12 500 years ago, were able to persist at the latitude of Gaspésie only in relict habitats unsuitable for the colonization of forest species and simulating
the Arctic environment permanently.
At low elevations, such habitats are found in gravelly flats of large rivers and limestone cliffs such as those on Mount St. Anne. At the cliff level, these plants are found mainly in the narrow zone between the base of the vertical wall and the top of the scree slopes, at the top of the cliffs and on the cornices.
Some species of vascular plants of interest are observed in the Monts Sainte-Anne and Blanc massif. The Nested Seed Drava is a species designated as Threatened in Quebec. Several others, such as Howell's Antennae, Puffhorn, Boivin's Arabette, Quebec's Arabette, bulbous Calypso, Silverfinch, Fern Fern, Fernandia Piperia, Polysticus False lonchitis, Goldenrod bunches, Goldenrods and Seedbill are on the list of plants likely to be designated "threatened" or "vulnerable" in Quebec.
The segmented fleabane has been discovered on Mont Blanc by Pierre Dansereau the August 6 1934. In this sector, the characteristic conglomerate of the Bonaventure Formation is suitable for this calcicole species. This relic species, survivor of the ancient interglacial flora, is found on cliffs, cornices and other exposed and elevated places. The Grande Crevasse sector supports several individuals.
In the Bonaventure Island and Percé Rock National Park, rare species are also present.