Rosa helenae

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Rosa helenae Rehder & E.H.Wilson

Rosaceae

Life form: shrub
Usage: ornamental plant

Exposure: sun - Exposure: half shade   7

Moisture: dry bis Moisture: moderately moist

Soil: sandy loam - Soil: gritty loam

Arrangement: alternate
Leaves: decidious

Shape: ovate

Division: imparipinnate

Shape: five-stellate
Fruit: hip

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Inflorescence: corymb

Petals: not specified
Habit: not specified

Growth form: not specified

Taxonomy

Divisio:
Magnoliophyta
Subdivisio:
Magnoliophytina
Classis:
Rosopsida
Subclassis:
Rosidae
Superordo:
Rosanae
Ordo:
Rosales

Rosa helenae is a shrub.

Naming

Rosa helenae was described by Alfred Rehder and Ernest Henry Wilson in 1915. The name is considered as validly published.

Taxonomy

Rosa helenae is a species in the genus Rosa which contains approximately 180 to 623 species and belongs to the family of the Rosaceae (Rose Family).

Characteristics

Growth

The shrubs reach heights of 7 to 9 metres.

Wood and Bark

Leaves

Rosa helenae is deciduous. The mid-green, imparipinnate leaves are alternate. The ovate leaflets are serrate and petiolate.

Flowers and Fruits

Rosa helenae produces corymbs of white five-stellate flowers from June to July.

The shrubs produce ornamental red hips in autumn.

Root System

Distribution

Rosa helenae is native to Central China.

Cultivation

The shrubs prefer a sunny to half-shady situation on dry to moderately moist soil. The substrate should be sandy-loamy or gritty-loamy soil. They tolerate temperatures down to -18°C (USDA zone 7).

Uses

The ornamental value of Rosa helenae lies especially in its fragrance.

Maintenance and Propagation

Cultivars

Pests and Diseases

Literature

  • Walter Erhardt, Erich Götz, Nils Bödeker, Siegmund Seybold: Der große Zander. Eugen Ulmer KG, Stuttgart 2008, ISBN 978-3-8001-5406-7. (Ger.)
  • Christoper Brickell (Editor-in-chief): RHS A-Z Encyclopedia of Garden Plants. Third edition. Dorling Kindersley, London 2003, ISBN 0-7513-3738-2.

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