Betula delavayi Franch.

Species

Angiosperms > Fagales > Betulaceae > Betula

Characteristics

Shrubs or trees to 8 m tall; bark dark gray. Branches diagonal or prostrate, sometimes erect; branchlets brown, densely yellow villous. Petiole 5-10 mm, sparsely villous; leaf blade elliptic, oblong, ovate, or broadly ovate, (1.5-)2-7 × 1-4 cm, abaxially sparsely resinous punctate and white sericeous-villous along veins, adaxially densely yellow sericeous-villous when young, base rounded, margin doubly minutely serrate, apex acuminate or subrounded; lateral veins (5-)9-21 on each side of midvein. Female inflorescence oblong or oblong-cylindric, 1-2.5 cm × 5-10 mm; peduncle ca. 5 mm, villous; bracts 5-10 mm, pubescent, ciliate, sometimes densely villous, 3-lobed, middle lobe lanceolate or oblong, lateral lobes spreading, ovate, ca. 1/2 as long as middle lobe. Nutlet obovate or elliptic, 2.5-3 × 1.5-2 mm, pubescent, with very narrow wings. Fl. Jun, fr. Jul-Aug.
Life form -
Growth form tree
Growth support free-standing
Foliage retention deciduous
Sexuality monoecy
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 6.0 - 8.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 4-9
Soil humidity 5-7
Soil texture 3-4
Soil acidity -
Soil nutriment -
Hardiness (USDA) -

Usage

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

Cultivation

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

Distribution

Betula delavayi world distribution map, present in China

Conservation status

Betula delavayi threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:295072-1
WFO ID wfo-0000332264
COL ID LP72
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Betula delavayi Betula forrestii Betula delavayi var. forrestii Betula delavayi var. microstachya Betula delavayi var. polyneura Betula chinensis var. delavayi Betula delavayi var. delavayi