I was a little hesitant about listing this plant. Because the book "Bleeding Hearts and Corydalis" (a definitive source) list Margery Fish as white, but I have seen it in three different botanical gardens and on many different web sites as pink??
Pronunciation
(dy-SEN-truh)(for-MOH-suh)
Plant Type
All Plants, Perennials Hardy
Hardiness Zone
5
Sunlight
shade, part shade
Moisture
average to moist
Soil & Site
average, moist, organic
Temperature
tolerates light to medium frosts
Flowers
pendulous white to pink flowers borne on scapes holding the flowers above the foliage
Leaves
very attractive blue green, triangular 3 times pinnately divided
Propagation
division
Cultivar Origin
Margaret Fish is an cultivar of the Pacific Bleeding Heart (Dicentra formosa) and is native to western North America.
Notes & Reference
#115-Bleeding Hearts, Corydalis and Their Relatives (Mark Tebbit, Magnus Liden, Henrik Zetterlund)