. The Canadian field-naturalist. 1976 Thompson and Kuijt: Relict Montane and Subalpine Plants. Montana 439 of Figure 5. Abies lasiocarpa, where it occurs, is often severely stunted and forms low shrub-like skirts. Understory plants are virtually absent from most stands of subalpine forest. Aspen Grove land. Open groves of Populus tremuloides surrounded by grassland are found on grassy south-facing slopes as high as 1800 m (Figure 7). These are similar to the aspen groveland described by Lynch (1955) on the east slope of the Rocky Mountains and contain a lush understory of grasses, forbs, and s
. The Canadian field-naturalist. 1976 Thompson and Kuijt: Relict Montane and Subalpine Plants. Montana 439 of Figure 5. Abies lasiocarpa, where it occurs, is often severely stunted and forms low shrub-like skirts. Understory plants are virtually absent from most stands of subalpine forest. Aspen Grove land. Open groves of Populus tremuloides surrounded by grassland are found on grassy south-facing slopes as high as 1800 m (Figure 7). These are similar to the aspen groveland described by Lynch (1955) on the east slope of the Rocky Mountains and contain a lush understory of grasses, forbs, and shrubs, including Agoseris glauca, Arnica cordifolia, Arnica sororia, Amelanchier alnifolia, Carex sprengelii, CoUomia linearis, Erysimum cheiran- thoides, Fragaria virginiana, Galium boreale, Geum aleppicum, Monarda fistulosa, Peri- deridia gairdneri, Pyrola asarifolia, Rites seto- sum, Rosa woodsii, Rubus idaeus, Shepherdia canadensis, Spiraea betulifolia, Urtica dioica, Vicia americana, and Viola canadensis. Aspen Woodland. At lower elevations, be- tween approximately 1400 and 1600 m, clones of Populus tremuloides are found scattered within the Douglas fir forest. These stands probably represent a fire-caused serai stage of the Douglas fir forest, as overall understory composition is similar to that of the surrounding Douglas fir forest. The aspen woodland covers a con- siderably larger area on West Butte than on East Butte. Mountain Ravines. Within the higher mon- tane region, between 1500 and 2000 m, major streams flow through steep rocky ravines. These are usually bordered by coniferous forests and support stands of Populus tremuloides and Acer glabrum. It is here that the most mesic plant communities are found; along the moist shaded banks of these ravines occur Calypso bulbosa, Castilleja rhexifolia, Cornus canadensis, Cysto- pteris fragilis, Disporum trachycarpum, Epi- lobium paniculatum, Equisetum arvense, Gen- tiana amarella, Habenaria hyperborea, Her- acleum lanatum,
Size: 2136px × 1170px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorottawafieldnaturalistsclub, bookcentury1900, bookcolle
