Dicentra peregrina

Dicentra peregrina (Japanese コマクサ komakusa) is a herbaceous perennial growing from a rhizome, native to mountains in Japan and nearby areas of East Asia.

Dicentra peregrina
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Ranunculales
Family: Papaveraceae
Genus: Dicentra
Species:
D. peregrina
Binomial name
Dicentra peregrina
(Rudolph) Makino

Etymology

The species name peregrina is Latin for "exotic, alien, foreign, strange, from foreign lands", possibly because the species is the only one of its genus outside of North America.[1]

In Japanese, the plant (kusa)[2] is named for the buds, which look like the head of a horse (koma).[3]

Description

Leaves are gray-green, glaucous, and deeply cut, with linear lobes.

Flowers have four rose-purple, pink, cream, pale yellow, or white petals and two tiny sepals. Outer petals are pouched at the base and strongly bent back at the ends. Inner petals are long and protruding, connected at the end.

Ecology

Komakusa grows in Japan, the Kuril Islands, Sakhalin Island, and northeastern Siberia, including the Kamchatka Peninsula.[1] It favors gravelly soil at high altitudes, 3,350 m (10,990 ft), in alpine tundra.[4]

Cultivars
Hybrid (note wider-lobed leaves)

There are several hybrid cultivars, cultivated as ornamental plants, involving Dicentra eximia, Dicentra formosa, and Dicentra nevadensis.

  • Dicentra 'Candy Hearts' (D. eximia × D. peregrina)
    rose-pink flowers
  • Dicentra 'Gothenburg' (D. formosa subsp. oregana × D. peregrina f. alba) – light pink flowers
  • Dicentra 'Ivory Hearts' (D. eximia × D. peregrina)
    white flowers
  • Dicentra 'King of Hearts' – D. peregrina × (D. formosa subsp. oregana × D. eximia)
    pink flowers
  • Dicentra 'Luxuriant' (D. eximia × D. peregrina)
    cherry-red flowers
  • Dicentra 'Tsuneshigo Rokujo' (D. nevadensis × D. peregrina)
    pink flowers
  • Dicentra 'King of Hearts'
  • Dicentra 'Ivory Hearts'

References
  1. Tebbitt, Mark; Lidén, Magnus; Zetterlund, Henrik (2008). Bleeding hearts, Corydalis, and their relatives. Timber Press. pp. 71, 72.CS1 maint: ref=harv (link)
  2. くさ kusa in Japanese Kanji dictionary
  3. コマクサ komakusa on Japanese Wikipedia, ja:コマクサ
  4. Tebbitt, Mark; Lidén, Magnus; Zetterlund, Henrik (2008). Bleeding hearts, Corydalis, and their relatives. Timber Press. pp. 56–58.CS1 maint: ref=harv (link)
  • Bleeding hearts, Corydalis, and their relatives. Mark Tebbitt, Magnus Lidén, and Henrik Zetterlund. Timber Press. 2008. — Google Books
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