Euonymus fortunei

Euonymus fortunei
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Celastrales
Family: Celastraceae
Genus: Euonymus
Species: E. fortunei
Binomial name
Euonymus fortunei

Euonymus fortunei (common names spindle or Fortune's spindle, winter creeper or wintercreeper) is a species of flowering plant in the family Celastraceae, native to east Asia, including China, Korea, the Philippines and Japan.[1] It is named after the plant explorer Robert Fortune.

Description

It is an evergreen shrub which grows as a vine if provided with support. As such it grows to 20 m (66 ft), climbing by means of small rootlets on the stems, similar to ivy (an example of convergent evolution, as the two species are not related). Like ivy, it also has a sterile non-flowering juvenile climbing or creeping phase, which on reaching high enough into the crowns of trees to get more light, develops into an adult, flowering phase without climbing rootlets.

The leaves are arranged in opposite pairs, elliptic to elliptic-ovate, 2–6 cm long and 1–3 cm broad, with finely serrated margins. The flowers are inconspicuous, 5 mm in diameter, with four small greenish-yellow petals. The fruit is a four-lobed pale green pod-like berry, which splits open to reveal the fleshy-coated orange seeds, one seed in each lobe.

Varieties

There are two or three varieties:

  • Euonymus fortunei var. fortunei (syn. var. acutus). China, Korea
  • Euonymus fortunei var. radicans (Sieb. ex Miq.) Rehd. (syn. E. radicans). Japan
  • Euonymus fortunei var. vegetus (Rehd.) Rehd. Northern Japan (Hokkaidō), doubtfully distinct from var. radicans (Bean 1973)

Range

It has an extensive native range, including many parts of China (from sea level to 3400 m elevation), India, Indonesia, Japan, Korea, Laos, Myanmar, Philippines, Thailand, and Vietnam.[1] It resembles Euonymus japonicus, which is also widely cultivated but is a shrub, without climbing roots.[2] It also is related to a variety of similar species, including Euonymus theifolius, or Euonymus vagans and also a number of named "species" which are found only in cultivation and better treated as cultivars.[1]

Cultivation and uses

It is widely cultivated as an ornamental plant, with numerous cultivars selected for such traits as yellow, variegated and slow, dwarfed growth. It is used as a groundcover or a vine to climb walls and trees. The following cultivars have gained the Royal Horticultural Society's Award of Garden Merit:-[3]

  • 'Emerald Gaiety'[4]
  • 'Emerald 'n' Gold'[5]
  • 'Emerald Surprise'[6]

Plants propagated from mature flowering stems (formerly sometimes named "f. carrierei") always grow as non-climbing shrubs. Some popular cultivars such as 'Moon Shadow' are shrub forms.

Most of the cultivated plants belong to var. radicans (Huxley 1992). It is generally considered cold hardy in USDA zones 5 to 9, and is considered an invasive species in some parts of the world, notably the eastern United States[7][8] and Canada.

References

  1. 1 2 3 "Euonymus fortunei (Turczaninow) Handel-Mazzetti". Flora of China.
  2. ↑ "Euonymus japonicus Thunberg". Flora of China.
  3. ↑ "AGM Plants - Ornamental" (PDF). Royal Horticultural Society. July 2017. p. 37. Retrieved 18 February 2018.
  4. ↑ "RHS Plant Selector - Euonymus fortunei 'Emerald Gaiety'". Retrieved 19 June 2013.
  5. ↑ "RHS Plant Selector - Euonymus fortunei 'Emerald 'n' Gold'". Retrieved 19 June 2013.
  6. ↑ "RHS Plant Selector - Euonymus fortunei 'Emerald Surprise'". Retrieved 19 June 2013.
  7. ↑ "Profile for Euonymus fortunei (Turcz.) Hand.-Maz. var. radicans (Siebold ex Miq.) Rehder (winter creeper)". PLANTS Database. USDA, NRCS. Retrieved May 28, 2011.
  8. ↑ Swearingen, J.; K. Reshetiloff; B. Slattery & S. Zwicker (2002). "Creeping Euonymus". Plant Invaders of Mid-Atlantic Natural Areas. National Park Service and U.S. Fish & Wildlife Service.
  • Bean, W. J. (1973) Trees and Shrubs hardy in the British Isles 8th ed., vol. 2: 150-151. John Murray.
  • Huxley, A., ed. (1992) New RHS Dictionary of Gardening vol. 2: 242. Macmillan.
  • Pink, A. (2004). Gardening for the Million. Project Gutenberg Literary Archive Foundation.
  • "Euonymus fortunei". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA).
  • Plants for a Future: Euonymus fortunei
  • USDA Plants Profile: Euonymus fortunei
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