Dicentra peregrina

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]

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.

• 
  A plant in early spring before flowering on Mount Ontake
• 
  A plant in bud
• 
  A plant with many flowers
• 
  White form on Mount Tsubakuro, Nagano Prefecture, Japan
• 
  A broken pod with seed

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]

• Wild plants
• 
  Gravelly alpine area scattered with komakusa on Mount Yari in the Hida Mountains
• 
  Komakusa plants on Mount Norikura
• 
  A deep pink komakusa in bloom with mountain as background

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'

• Bleeding hearts, Corydalis, and their relatives. Mark Tebbitt, Magnus Lidén, and Henrik Zetterlund. Timber Press. 2008. — Google Books

Wikimedia Commons has media related to Dicentra peregrina.

Wikispecies has information related to Dicentra peregrina.

• Pacific Bulb Society: Dicentra peregrina
• Flavon's wild herb and alpine plants: gallery