Aspidistra elatior

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Aspidistra elatior
Aspidistra elatior1.jpg
Scientific classification e
Kingdom: Plantae
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Asparagaceae
Subfamily: Nolinoideae
Genus: Aspidistra
Species: A. elatior
Binomial name
Aspidistra elatior
Blume[1]

Aspidistra elatior (cast-iron plant or bar room plant) also known in Japanese as haran or baran (葉蘭)[2] is a species of flowering plant in the family Asparagaceae, native to Japan and Taiwan. Tolerant of neglect, it is widely cultivated as a houseplant, but can also be grown outside in shade where temperatures remain above −5 °C (23 °F).

Description[edit]

Growing to 60 cm (24 in) tall and wide, it is an evergreen rhizomatous perennial, with glossy dark green leaves 30–50 cm (12–20 in) long, and fleshy, 8-lobed cream flowers with maroon colouring on the inner surface, borne in early summer.[3]

Distribution[edit]

Although sometimes thought to be of Chinese origin,[4] the species is in fact native to Taiwan[1] and islands in southern Japan including Kuroshima,[5] Suwanosejima[6] and the Uji Islands.[7] It occurs in association with overstorey species such as Ardisia sieboldii and Castanopsis sieboldii.[4]

Cultivation[edit]

Aspidistra elatior used as a container plant
Aspidistra flower

Aspidistra elatior is well known in cultivation and has a reputation for withstanding neglect, giving rise to its common name of cast-iron plant. It is tolerant of low light, low humidity, temperature fluctuation and irregular watering. It is best situated in a position away from direct sun to avoid leaf bleaching. Good drainage is also required for optimal growth and to avoid root rot.[8] Widely grown as a house plant, it can also be grown successfully outdoors in shade in temperate climates, where plants will generally cope with temperatures down to −5 °C (23 °F), being killed by frosts of −5 to −10 °C (23 to 14 °F) or below.[9]

The species is not seriously troubled by insects, however mites and scale may cause occasional problems. Its leaves and roots may be subject to browsing by hoofed mammals such as deer, as well as rodents and rabbits.[8]

This plant has gained the Royal Horticultural Society's Award of Garden Merit.[10]

A number of cultivars are available, including:[9]

  • 'Asahi' (meaning "morning sun" in Japanese) – the leaves open chocolate brown, turning green from the base upwards
  • 'Hoshi-zora' (meaning "starry sky" in Japanese) – large, faintly speckled leaves
  • 'Lennon's Song' – long narrow ends to the leaves and a central paler green stripe (discovered by an American grower of cut foliage, Robin Lennon)
  • 'Okame' – variegated, with creamy white stripes running the length of the leaf; incorrectly called 'Variegata'[8]

(A. elatior 'Milky Way' is properly A. lurida 'Ginga'.)[9]

References[edit]

  1. ^ a b "Aspidistra elator". World Checklist of Selected Plant Families. Royal Botanic Gardens, Kew. Retrieved 2013-07-22. 
  2. ^ "Aspidistra elatior Blume". Germplasm Resources Information Network, Agricultural Research Service, United States Department of Agriculture. 
  3. ^ RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 1405332964. 
  4. ^ a b "Aspidistra elatior". Flora of China. Retrieved 2009-02-19. 
  5. ^ Sako, Shizuo; Katsutoshi Maruno (March 1983). "Flora of Island Kuroshima, Pref. Kagoshima, Kyushu" (PDF). Bulletin of the Kagoshima University Forest 11: 33–61. ISSN 03899454. Retrieved 2009-02-20. 
  6. ^ Sako, Shizuo; Hidenobu Kirino (March 1980). "Flora of Isl. Suwanose-jima, Isls. Tokara, Ryukyus" (PDF). Bulletin of the Kagoshima University Forest 8: 19–53. ISSN 03899454. Retrieved 2009-02-20. 
  7. ^ Sako, Shizuo et al. (March 1988). "Flora of the Uji Isls., Kagoshima Pref., Kyushu" (PDF). Bulletin of the Kagoshima University Forest 16: 83–108. ISSN 03899454. Retrieved 2009-02-20. 
  8. ^ a b c "Aspidistra elatior". PlantFinder. Missouri Botanical Garden. Archived from the original on 4 March 2009. Retrieved 2009-02-19. 
  9. ^ a b c Brown, Bob (2013). "High Flying Aspidistras". The Garden 138 (1): 62–65. 
  10. ^ "RHS Plant Selector - Aspidistra elatior". Retrieved 4 June 2013.