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Betula potaninii
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This genus has been sponsored and new text is being prepared.
Credits
Article from Bean's Trees and Shrubs Hardy in the British Isles
Recommended citation
'Betula potaninii' from the website Trees and Shrubs Online (treesandshrubsonline.
Synonyms
- B. wilsonii Bean
Other taxa in genus
- Betula albosinensis
- Betula alleghaniensis
- Betula × aurata
- Betula bomiensis
- Betula × caerulea
- Betula chichibuensis
- Betula chinensis
- Betula coerulea-grandis
- Betula cordifolia
- Betula corylifolia
- Betula cylindrostachya
- Betula davurica
- Betula delavayi
- Betula ermanii
- Betula forrestii
- Betula glandulosa
- Betula globispica
- Betula grossa
- Betula humilis
- Betula insignis
- Betula lenta
- Betula luminifera
- Betula lutea
- Betula mandshurica
- Betula maximowicziana
- Betula medwediewii
- Betula nana
- Betula neoalaskana
- Betula nigra
- Betula occidentalis
- Betula papyrifera
- Betula pendula
- Betula platyphylla
- Betula populifolia
- Betula pubescens
- Betula pumila
- Betula raddeana
- Betula schmidtii
- Betula szechuanica
- Betula tianschanica
- Betula × utahensis
- Betula utilis
A shrub 6 to 10 ft high; lower branches decumbent or prostrate; branchlets thickly clothed the first season with forward-pointing, somewhat appressed, pale brown hairs, glabrous and slightly warted the second season. Stipules triangular-ovate, silky. Leaves ovate, pointed, rounded or wedge-shaped at the base, irregularly, often doubly, toothed; 3⁄4 to 13⁄4 in. long, 3⁄8 to 1 in. wide; veins deeply sunken and forming parallel grooves above, prominent beneath, in twelve to twenty-two pairs; dark green, becoming glabrous except on the hairy veins above, clothed beneath with long, brown, silky hairs, especially on the veins and midrib; leaf-stalk 1⁄12 to 1⁄8 in. long, silky. Female catkins, 3⁄4 in. long; scales three-lobed, 1⁄10 in. long, the central lobe twice or more than twice as long as the rounded side-lobes, ciliate. Nutlet 1⁄16 in. diameter, ovate-orbicular, the wing narrow, ciliate towards the end. Male catkins 1⁄2 in. long.
Native of W. China at altitudes of 7,000 to 9,000 ft. Introduced by Wilson in 1909, who describes it as often hanging down over cliffs. It is very distinct from other dwarf birches in its silky-hairy leaves with numerous veins.
