Betula cordifolia Regel

Speckled birch (en), Bouleau blanc (fr)

Species

Angiosperms > Fagales > Betulaceae > Betula

Characteristics

Trees or shrubs , large, irregular, to 20 m; trunks often several, trees with narrow crowns. Bark of young trunks and branches dark reddish brown, close, in maturity reddish white to reddish tan or bronze, exfoliating in paper-thin sheets; lenticels dark, horizontally expanded. Twigs glabrous to sparsely pubescent, often covered with conspicuous, warty, resinous glands. Leaf blade narrowly ovate to ovate with 9--12 pairs of lateral veins, 6--10(--14) × 4--8 cm, base usually cordate, rarely rounded, margins coarsely or irregularly doubly serrate, apex short-acuminate, abaxially sparsely to moderately pubescent, sometimes velutinous or tomentose along major veins and in vein axils, covered with minute, resinous glands. Infructescences pendulous or nearly pendulous, cylindric, 2.5--5.5 × 0.6--1 cm, shattering with fruits in fall; scales glabrous to moderately pubescent, lobes diverging proximal to middle, central lobe elongate, obtuse, lateral lobes ascending, shorter and slightly broader than central lobe. Samaras with wings broader than body, broadest near summit, extended beyond body apically. 2 n = 28, 56.
Life form -
Growth form tree
Growth support -
Foliage retention deciduous
Sexuality monoecy
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 20.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 4-9
Soil humidity -
Soil texture -
Soil acidity 2-8
Soil nutriment -
Hardiness (USDA) 6-9

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by cuttings, graftings or seedlings. Seeds needs stratification.
Mode cuttings graftings seedlings
Germination duration (days) 30 - 90
Germination temperacture (C°) 18 - 23
Germination luminosity -
Germination treatment stratification
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Betula cordifolia unspecified picture

Distribution

Betula cordifolia world distribution map, present in Canada, France, Micronesia (Federated States of), Malaysia, and Nicaragua

Conservation status

Betula cordifolia threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:32238-2
WFO ID wfo-0000331884
COL ID LP6F
BDTFX ID -
INPN ID 761868
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Betula cordifolia Betula papyrifera f. cordifolia Betula papyracea var. cordifolia Betula papyrifera subsp. cordifolia