Woody > Betula > Betula utilis > Betula utilis var. jacquemontii
Betula utilis
var. jacquemontii
Jacquemonts's Birch
Origin: Found from Kashmir east to central Nepal it was first collected on an expedition sponsored by Jardin des Plantes, Paris, in Kashmir by the French naturalist Victor Vincelas Jacquemont (1801-1832). Formerly known as B. utilis var. jacquemontii it has been upgraded to B. utilis subsp. jacquemontii in the recently published 'The Genus Betula', by K. Ashburner and H. McAllister; Kew Publishing; 2013.
| Family |
| Betulaceae |
| Genus |
| Betula |
| Species |
| utilis |
| Category |
| Woody |
| Type |
| Tree (deciduous) |
| Variety |
| jacquemontii |
| Synonyms |
| Betula utilis subsp. jacquemontii (Ashburner & McAllister 2013) |
| USDA Hardiness Zone |
| 7 |
| Canadian Hardiness Zone |
| 6b - 7a |
| RHS Hardiness Zone |
| H6 - H5 |
| Temperature (°C) |
| -18 - (-12) |
| Temperature (°F) |
| 0 - 10 |
| Height |
| 20 m |
| Spread |
| 5 m |
Photographs
Description and Growing Information
Flowering Period
| Landscape |
| It may be used as a single specimen or planted in groups and may be a single stem or multiple. It has intense winter interest especially when planted in glades and groups and combined with Cornus alba and other interesting, contrasting barked plants. |
| Cultivation |
| A rather hardy plant that does best in good light. |
| Growth |
| Medium |
| Pests |
| Prone to attack by several bracket fungi (especially Piptoporus betulinus), as well as by mildew and birch rust. |
| Habitat |
| Found in various habitats along rivers, in woodlands, banks, scree, rough slopes and isolated pastures in Kashmir east to Nepal. |
| Bark/Stem Description |
| Bark is white to startling white, thin, peeling in horizontal papery flakes. |
| Leaf Description |
| Leaves with 7-9 vein pairs, dark green above and paler beneath, turning golden-yellow in autumn, to 5-12 x 3-7 cm. |
| Flower Description |
| Male catkins to 12 cm. |
| Fruit Description |
| Catkins to 2.5-3.5 cm x 10-12 mm, with pubescent fruiting scales. |
| Notable Specimens |
| Royal Botanical Gardens, Burlington, Ontario, Canada. |
| Propagation |
| Plant unchilled seeds with no covering (light is an important factor in germination), however hybridization may occur. Wild-collected seeds tend to be the most successful, and ripen in early autumn. |
References
'The Genus Betula', by K. Ashburner and H. McAllister; Kew Publishing; 2013.
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