Rubus cockburnianus Hemsl.

Ronce (fr)

Species

Angiosperms > Rosales > Rosaceae > Rubus

Characteristics

Shrubs 1.5–3 m tall. Branchlets brownish to reddish brown, glabrous, glaucous, with sparse, curved prickles. Leaves imparipinnate, 7–9-foliolate, rarely 5-foliolate; petiole 3–5 cm, petiolule of terminal leaflet 1–2 cm, lateral leaflets subsessile, petiolule and rachis glabrous, with sparse, curved minute prickles; stipules linear or linear-lanceolate, 5–7 mm, glabrous; blade of leaflets oblong-lanceolate or ovate-lanceolate, terminal leaflet sometimes nearly rhombic and minutely lobed, 5–10 × 1.5–4(–5) cm, abaxially gray tomentose, adaxially glabrous or sparsely pilose, base broadly cuneate or rounded, margin irregularly coarsely serrate or incised-doubly serrate, usually lobed on terminal leaflet, apex acuminate. Inflorescences terminal or axillary, terminal ones cymose panicles, 10–16(–18) cm, lateral ones often subracemes, rarely subcorymbose; rachis and pedicels glabrous; bracts linear, 2–5 mm, glabrous. Pedicel somewhat reddish when young, 7–12 mm, slender. Flowers to 1 cm in diam. Calyx abaxially glabrous; sepals erect at anthesis, reflexed in fruit, ovate-lanceolate, 5–8 × 2–4 mm, margin gray tomentose and entire, apex long acuminate. Petals pink, suborbicular or obovate, 5–7 × 4–5 mm, margin premorse or coarsely serrate above middle, base shortly clawed. Stamens many, slightly shorter than petals; filaments linear, broader toward base. Pistils slightly shorter than stamens; ovary soft hairy; styles glabrous. Aggregate fruit purplish black, subglobose, less than 1 cm in diam., slightly pubescent or subglabrous; pyrenes shallowly rugose. Fl. May–Jul, fr. Aug–Sep.
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An arching deciduous shrub. It grows 2.2-2.7 m high and 1.8-2.5 m wide. The stems are purplish and prickly. They are covered with a white bloom. The leaves are dark green and have 9 egg shaped leaflets. They are furry white underneath. The flowers are purple. The fruit are purplish-black. They are less than 1 cm across and slightly hairy.
Life form perennial
Growth form shrub
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination entomogamy
Spread -
Mature width (meter) 2.5 - 4.0
Mature height (meter) 2.5 - 3.0
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

It is frost hardy. It grows on sunny slopes and in dense forests in mountain valleys in S China between 900 and 4,000 m altitude. It suits hardiness zones 6-10. In Sichuan and Yunnan.
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Thickets on sunny slopes, dense forests in montane valleys, riversides at elevations of 900-4000 metres.
Light 6-9
Soil humidity 4-6
Soil texture 2-5
Soil acidity 2-8
Soil nutriment -
Hardiness (USDA) 6-8

Usage

Uses breeding dye gene source medicinal
Edible fruits
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by cuttings or seedlings. Seeds needs stratification.
Mode cuttings seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment stratification
Minimum temperature (C°) -23
Optimum temperature (C°) 14 - 20
Size -
Vigor -
Productivity -

Images

Leaf

Rubus cockburnianus leaf picture by Martin Bishop (cc-by-sa)

Distribution

Rubus cockburnianus world distribution map, present in China and United Kingdom of Great Britain and Northern Ireland

Identifiers

LSID urn:lsid:ipni.org:names:735898-1
WFO ID wfo-0000983366
COL ID 6WXLV
BDTFX ID 122117
INPN ID 810880
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Rubus cockburnianus Rubus giraldianus