Dicentra
Dicentra (Greek "dís" "twice", "kéntron" "spur"), known as bleeding-hearts, is a genus of eight species of herbaceous plants with oddly shaped flowers and finely divided leaves, native to eastern Asia and North America. Description. Flowers have two tiny sepals and four petals. The flowers are bisymmetric: the two outer petals are spurred or pouched at the base and curved outwards or backwards at the tip, and the two inner ones with or without a crest at the tip. In "Dicentra", all leaves are in a basal rosette, and flowers are on leafless stalks. In other genera with bisymmetric  heart-shaped flowers ("Lamprocapnos", "Dactylicapnos", "Ichtyoselmis", "Ehrendorferia"), leaves grow on stems as well as from the root. Each of the two compound stamens is composed of one median and two lateral half stamens fused together. The stamens and pistil are held between the inner petals. Seeds with elaiosomes are borne in long capsules. All parts are poisonous if ingested. Taxonomy. Current species. The genus "Dicentra" includes plants whose flowers and leaves grow on stems directly from the roots. Species with branching stems used to be included in the genus, but have now been moved to other genera. Former species. The  genera "Dactylicapnos", "Ichtyoselmis", "Ehrendorferia" and "Lamprocapnos" were previously included as subgenera in "Dicentra", but have been shown not to belong in this genus (see for example Flora of China) Cultivation. There are several hybrids and cultivars involving "Dicentra eximia", "Dicentra formosa", and "Dicentra peregrina", including (those marked have gained the Royal Horticultural Society's Award of Garden Merit):- Hybrids involving "Dicentra peregrina" are often intolerant of hot, humid climates and sun, like the species itself.