Radermachera sinica Hemsl.

Serpent tree (en)

Species

Angiosperms > Lamiales > Bignoniaceae > Radermachera

Characteristics

Trees ca. 10 m tall. Petioles, leaf axis, and inflorescences glabrous. Leaves 2(or 3)-pinnately compound; leaf rachis ca. 30 cm; lateral petiolules less than 5 mm, terminal one 1-2 cm; leaflets ovate to ovate-lanceolate, 4-7 X 2-3.5 cm, glabrous, base broadly cuneate, margin entire, apex caudate-acuminate; lateral veins 5 or 6 on each side of midrib. Inflorescences paniculate, terminal, erect, 25-35 cm; bracts linear-lanceolate, ca. 10 cm, deciduous, bractlets linear, 4-6 cm. Calyx teeth 5, ovate-lanceolate, ca. 12 mm. Corolla white to pale yellow, campanulate-funnelform, 6-8 cm; lobes rounded, ca. 2.5 cm. Stamens 4, didynamous; staminode present, filiform. Ovules 2-rowed. Style exserted; stigma 2-lobed. Capsule terete, nodding, angular, ca. 85 X 1 cm; pericarp thin leathery, indistinctly lenticellate; septum terete, slightly compressed. Seeds ellipsoid, including wing ca. 2 cm X 5 mm. Fl. May-Sep, fr. Oct-Dec.
More
A tree. It grows 10 m tall. The leaves are compound and twice divided with leaflets along the stalk. The leaflets are oval and 4-7 cm long by 2-4 cm wide. The flowers are in erect panicles at the top of the plant. These are 25-35 cm long. They are white or pale yellow and funnel shaped.
Life form
Growth form tree
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) 1.5 - 1.75
Mature height (meter) 6.0 - 10.0
Root system -
Rooting depth (meter) 0.8
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway c3

Environment

It is a tropical plant. It grows on slopes and in forests between 300-800 m above sea level. In Yunnan.
Light 5-8
Soil humidity 3-7
Soil texture 3-4
Soil acidity 4-6
Soil nutriment -
Hardiness (USDA) 10-11

Usage

Uses material medicinal
Edible flowers
Therapeutic use Leukemia (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by cuttings.
Mode cuttings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) 1
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Leaf

Radermachera sinica leaf picture by Dieter Albrecht (cc-by-sa)

Distribution

Radermachera sinica world distribution map, present in China and United States of America

Conservation status

Radermachera sinica threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:110522-1
WFO ID wfo-0000778741
COL ID 99SWC
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Radermachera borii Stereospermum sinicum Radermachera tonkinensis Radermachera sinica