Rosa xanthina Lindl.

Yellow rose (en), Rosier xanthin au sens large (fr)

Species

Angiosperms > Rosales > Rosaceae > Rosa

Characteristics

Shrubs erect, 2–3 m tall. Branchlets diffuse, dense, glabrous, robust when old; prickles paired below some leaves, frequently opposite elsewhere, straight, to 1.2 cm, stout, flat, abruptly flaring to an elliptic base, small prickles and bristles absent. Leaves including petiole 3–5 cm; stipules mostly adnate to petiole, free parts linear-lanceolate, margin serrate and glandular; rachis and petiole sparsely pubescent, sometimes with small prickles; leaflets 7–13, broadly ovate or suborbicular, rarely elliptic, 6–18 × 5–10 mm, abaxially sparsely pubescent when young, glabrescent, adaxially glabrous, base broadly cuneate or subrounded, margin crenate or obtusely serrate, apex rounded-obtuse. Flower solitary, axillary, 3–4(–5) cm in diam.; pedicel 1–1.5 cm, glabrous, not glandular; bracts absent. Hypanthium subglobose or obovate, abaxially glabrous. Sepals 5, lanceolate, abaxially glabrous, adaxially sparsely pubescent, margin entire, apex acuminate. Petals 5 or double, yellow, broadly obovate, base broadly cuneate, apex emarginate. Styles free, much shorter than stamens, slightly exserted, villous. Hip purple-brown or black-brown, subglobose or obovoid, 8–10 mm in diam., glabrous, with persistent, reflexed sepals; pedicel 1–1.5 cm, glabrous. Fl. Apr–Jun, fr. Jul–Aug. 2n = 14*.
More
A shrub. It grows 1-3 m high. The small branches are hairy and brown. There are stout, straight prickles. The leaves have leaflets along the stalk. There are 7-13 leaflets and they are almost round. They are 8-20 mm long. They have teeth. The flowers occur singly and are yellow. They are 4 cm across. The fruit or hips are almost round and 1 cm across. They are red.
Life form perennial
Growth form shrub
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) 1.0 - 1.5
Mature height (meter) 1.25 - 2.5
Root system -
Rooting depth (meter) -
Root diameter (meter) 0.2
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 cool temperate plant.
Light 5-9
Soil humidity 2-6
Soil texture 2-5
Soil acidity 2-8
Soil nutriment -
Hardiness (USDA) 5-8

Usage

The fruit are eaten fresh. They are also used for marmalade and to make hot drinks.
Uses food medicinal
Edible fruits seeds
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by cuttings or seedlings.
Mode cuttings seedlings
Germination duration (days) 30 - 365
Germination temperacture (C°) 12
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -23
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Flower

Rosa xanthina flower picture by Dieter Albrecht (cc-by-sa)
Rosa xanthina flower picture by Dieter Albrecht (cc-by-sa)

Fruit

Rosa xanthina fruit picture by Dieter Albrecht (cc-by-sa)

Distribution

Rosa xanthina world distribution map, present in Canada, China, United Kingdom of Great Britain and Northern Ireland, Mongolia, Korea (Democratic People's Republic of), and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:734749-1
WFO ID wfo-0001014513
COL ID 78YC8
BDTFX ID 56412
INPN ID 118853
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Rosa xanthinoides Rosa pimpinellifolia Rosa xanthina Rosa hugonis Rosa xanthina f. xanthina