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Wildlife, Animals, and Plants |
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BOTANICAL AND ECOLOGICAL CHARACTERISTICS
GENERAL BOTANICAL CHARACTERISTICS:Oregon boxwood is a native, cool-season, evergreen shrub, with maroon flowers [24]. It is low growing, reaching heights of 1 to 3 feet (0.3-1 m), sometimes spreading, and densely branched. Its leaves are oblong and glabrous. Its fruit is a one- to two-seeded capsule [40,52].
RAUNKIAER [44] LIFE FORM:Phanerophyte
REGENERATION PROCESSES:Oregon boxwood stems can layer and root, and the shrub can be propagated easily through stem cuttings [29]. Seeds are dispersed by gravity, with no evidence to suggest they are dispersed by any other means [42].
SITE CHARACTERISTICS:Oregon boxwood grows on dry to moist sites in shaded mountain areas as high as subalpine habitats, but can be found at sea level in California [29,31]. It can grow in frost pockets in steep ravines or in open woods, ridgetops, and glades [12,22,28,29]. Oregon boxwood can occur on well-drained, shallow, gravelly soils, in clay and silt loams, and cobbly clay [22]. In British Columbia Oregon boxwood occurs on Podzols and Regosols [36]. Elevational ranges have been listed for some western states and provinces [2,14,36,39,52]:
from 5,000 to 10,500 feet (1,524-3,200 m) in Utah
from 6,600 to 11,000 feet (2,012-3,353 m) in Colorado
from 6,700 to 9,500 feet (2,042-2,896 m) in Wyoming
from 3,500 to 7,600 feet (1,067-2,317 m) in Montana
from 6,900 to 8,200 feet (2,103-2,499 m) in Idaho
from 6,000 to 10,000 feet (1,829-3,048 m) in Arizona/New Mexico
from 4,020 to 5,160 feet (1,279-1,600 m) in California/Oregon
from 3,950 to 4,950 feet (1,200-1,500 m) in British Columbia
SUCCESSIONAL STATUS:Oregon boxwood is an indicator species in several western habitat types and plant communities. It is a climax shrub and can tolerate both sun and shade [23], but it usually indicates dry to moist, cool sites and well-drained soils [19]. Quaking aspen/Saskatoon serviceberry (Amelanchier alnifolia)-Oregon boxwood community types in Idaho appear to be stable but may be slowly successional to quaking aspen-Douglas-fir/ Saskatoon serviceberry community types which might be in the Oregon boxwood phase of the Douglas-fir/pinegrass habitat type or the subalpine/pinegrass habitat type [39].
SEASONAL DEVELOPMENT:The following months have been noted for budding, flowering, and fruiting of Oregon boxwood. State Buds Flowers Fruits Source CA May-July [40] AZ, MX April-June June-Sept [52] OR, WA April-June [19] ID, MT March-May March-June July-Sept [15,42] UT April-July [14] CO May-July [14] WY June-August [14]
Related categories for SPECIES: Paxistima myrsinites | Oregon Boxwood |
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