Lathyrus can be annuals or herbaceous or evergreen perennials, mostly climbing, with pinnate leaves ending in a tendril, and showy pea-like flowers, fragrant in some species
'White Pearl' is a vigorous climbing herbaceous perennial to 2m, with winged stems and paired grey-green leaflets bearing tendrils. Up to 11 pure white flowers 2-3cm in width are borne in racemes