Mrs Collier’ is an ancestral cultivar of historic significance – first introduced in the UK in 1905 by Dobbie’s and named for the wife of one of the employees at their Mark’s Tey seed farm. It has primrose coloured buds which open cream, and a delicate vanilla scent. More recently it became notable as the foundation cultivar used in the cross between Lathyrus odoratus and L. belinensis, which has led to the various Lathyrus x hammettii hybrids.