![]() I have long wondered why this species has its characteristic range limitations. Although it usually occurs in mixed conifer forests (most often with Tsuga mertensiana), it occasionally forms pure stands ( Little 1980). Usually found on mesic to hygric sites including avalanche chutes, snowy timberlines, and bog-forest transition areas ( Pojar & Mackinnon 1994). Disjunct inland populations occur in BC and OR ( Michener 1993) here are my field notes from a visit to the Oregon grove in the Aldrich Mountains, in June 2013, and the BC populations are described by Perry (1954) and Hennon et al. USA, Canada: Pacific Coast area from S and SE Alaska through British Columbia, Washington and Oregon to extreme NW California locally found farther inland at 600-2100 m in the S, to sea level in the N ( Peattie 1950). nootkatensis the branchlets are 4-angled and the foliar units have fewer lateral shoots and, generally, are less symmetrical in form. The foliage is bifacially flattened and the foliar units (sprays) have many alternate lateral shoots in T. nootkatensis) and the seed cones are very distinct (bilaterally symmetrical in T. Mature trees are easily distinguished by their bark (gray in T. In habitat, this tree is most likely to be confused with Thuja plicata. Seeds 2-4 per scale, 2-5 mm, wing equal to or broader than body ( Michener 1993, M.P. 1991, Owens & Molder 1975), 8-12 mm broad, glaucous, dark reddish brown, becoming resinous scales 4-6, valvate with an open apex a small central columella between the apical pair of scales. Seed cones maturing and opening the second year, rarely in some southern lowland populations late in the first year, in (10-)16-18 months (El-Kassaby et al. Pollen cones 2-5 mm, grayish brown pollen sacs yellow. Leaves of branchlets mostly 1.5-2.5 mm, stout, occasionally glandular on keel, apex rounded to acute or acuminate, bases of facial leaves often overlapped by apices of subtending facial leaves glands usually absent (circular when present). Bark grayish brown, 1-2 cm thick, irregularly fissured. Trees to 40 m or dwarfed at high elevations trunk to 200 cm dbh. Rehder listed, with full bibliographic citations, 22 published varieties and forms best considered as cultivars), no taxonomic significance is attached to this variation here" ( Michener 1993). In light of the foliar and habit phenotypes recognized in the horticultural literature (for example, A. "In addition to variation in habit within the species, occasional plants have divergent forms of foliage. Jackson & Dallimore) Dallimore, xCuprocyparis leylandii (A. ![]() nootkatensis in cultivation has spontaneously hybridized with three other cypresses, C. Some authorities argue that it warrants treatment as a monotypic genus, in which case the correct name is Callitropsis nootkatensis Ørsted (or Oersted).Ĭ. (2010) returns it to Cupressus, albeit as a monotypic section. Chamaecyparis nootkatensis is still widely used, but the molecular analysis of Mao et al. ![]() Don) Spach 1841, Callitropsis nootkatensis Ørsted 1864, Xanthocyparis nootkatensis (D. I am partial to the name Nootka cypress because it was its original vernacular English name, because its distribution includes all coastal states and provinces from Alaska to California, and because it is neither yellow nor a cedar. Nootka cypress, Alaska yellow-cedar, Alaska cedar, yellow cypress ( Peattie 1950, Pojar & Mackinnon 1994).
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