Rosa willmottiae Hemsl.

Willmott's rose (en)

Species

Angiosperms > Rosales > Rosaceae > Rosa

Characteristics

Shrubs 1–3 m tall. Branchlets slender, glabrous; prickles in pairs below leaves, numerous, terete, straight, to 1.2 cm, slender, abruptly flaring at base, old branches rarely bristly. Leaves including petiole 2–4 cm; stipules mostly adnate to petiole, free parts ovate-lanceolate, margin glandular serrate or entire; apex acute; rachis and petiole glabrous or sparsely pubescent, glandular-pubescent and shortly prickly; leaflets 7–9, rarely 11, elliptic, obovate, or suborbicular, 6–17 × 4–12 mm, abaxially glabrous or puberulous along midvein, glandular or not, adaxially glabrous, base subrounded, rarely broadly cuneate, margin simply serrate, doubly serrate above middle, apex rounded-obtuse. Flower solitary, ca. 3 cm in diam.; pedicel 1–1.5 cm, often glandular-pubescent; bracts ovate-lanceolate, abaxially with distinct midvein, margin glandular serrate, apex caudate. Hypanthium oblong to subglobose, glabrous. Sepals 5, triangular-lanceolate, abaxially glabrous, adaxially densely pubescent, margin entire, apex elongate. Petals 5, pink, obovate, base cuneate, apex emarginate. Styles free, much shorter than stamens, densely pubescent. Hip orange-red, oblong or subglobose, ca. 1 cm in diam., glabrous, shiny, when ripening apical part of hypanthium and sepals deciduous together. Fl. May–Jun, fr. Jul–Sep.
Life form perennial
Growth form shrub
Growth support -
Foliage retention deciduous
Sexuality -
Pollination -
Spread -
Mature width (meter) 1.0 - 1.5
Mature height (meter) 1.0 - 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

Light 6-9
Soil humidity 1-5
Soil texture 3-4
Soil acidity 2-8
Soil nutriment -
Hardiness (USDA) 7-9

Usage

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

Cultivation

Can be grown by cuttings.
Mode cuttings
Germination duration (days) 30 - 365
Germination temperacture (C°) 12
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -18
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Rosa willmottiae unspecified picture

Distribution

Rosa willmottiae world distribution map, present in China

Identifiers

LSID urn:lsid:ipni.org:names:734731-1
WFO ID wfo-0001015980
COL ID 78YC6
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Rosa willmottiae Rosa willmottiae var. willmottiae

Lower taxons

Rosa willmottiae var. glandulifera