Salicornia x marshallii is a hybrid between Salicornia disarticulata (pusilla) (One-flowered Glasswort) and Salicornia ramosissima (Purple Glasswort). The hybrid has some flowers single and others in groups of two or three. S. disarticulata has only one flower and S. ramosissima in groups of three. There was just one plant of the hybrid growing very close to both parents. This would seem to be the first record for Ireland.