Difference between revisions of "Therorhodion camtschaticum"

(Pallas) Small in N. L. Britton et al.

in N. L. Britton et al., N. Amer. Fl. 29: 45. 1914 ,.

Common names: Kamchatka rhododendron
Basionym: Rhododendron camtschaticum Pallas Fl. Ross. 1(1): 48, plate 33 [as kamtschaticum]. 1784
Treatment appears in FNA Volume 8. Treatment on page 454.
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|subfamily=Ericaceae subfam. Ericoideae
 
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Revision as of 00:17, 28 May 2020

Shrubs usually to 2 dm. Stems multicellular, eglandular-hairy (hairs unbranched), sometimes also stipitate-glandular-hairy, glabrate with age. Leaves often clustered toward distal portions of shoots; blade elliptic to obovate, 1–4.5(–6) × 0.7–2.4 cm, thin, margins ciliate (hairs eglandular), plane, apex rounded to obtuse or acute, mucronate, surfaces usually eglandular-hairy, sometimes sparsely glandular-hairy. Floral bud scales (and leaflike inflorescence bracts) eglandular-hairy, sometimes also stipitate-glandular-hairy. Inflorescences 2–3-flowered, sometimes flowers solitary; axis elongate. Pedicels 1–4.7 cm, eglandular- and/or stipitate-glandular-hairy; bracteoles 2, green, smaller than leaves. Flowers opening after shoot development, appearing to terminate leafy shoots due to their leaflike bracts; calyx lobes 8–21 mm, eglandular- and/or stipitate-glandular-hairy; corolla purple to, rarely, white, upper 3 lobes with darker spots, 19–32 mm, margins ciliolate, unicellular-hairy on outer surface, tube ± absent due to slit between lower 2 lobes, lobes 12–26 mm; stamens unicellular-hairy proximally. Capsules 6–11 mm, unicellular-hairy. 2n = 24, 26.


Phenology: Flowering summer.
Habitat: Arctic and alpine tundra and heathlands, meadows, and subalpine woods
Elevation: 0-1500 m

Distribution

V8 894-distribution-map.gif

Alaska, e Asia (Japan, Russian Far East).

Discussion

Therorhodion camtschaticum is found in the coastal and southern insular regions.

Selected References

None.

Lower Taxa

None.
Kathleen A. Kron +  and Walter S. Judd +
(Pallas) Small in N. L. Britton et al. +
Rhododendron camtschaticum +
Kamchatka rhododendron +
Alaska +, e Asia (Japan +  and Russian Far East). +
0-1500 m +
Arctic and alpine tundra and heathlands, meadows, and subalpine woods +
Flowering summer. +
in N. L. Britton et al., N. Amer. Fl. +
Undefined tribe Empetraceae +
Therorhodion camtschaticum +
Therorhodion +
species +