Iris foetidissima 'Stinking iris'
Family
Iridaceae
 
Genus
Iris may be rhizomatous or bulbous perennials, with narrow leaves and erect stems bearing flowers with 3 large spreading or pendent fall petals, alternating with 3 erect, often smaller, standard petals, in late winter, spring or early summer
 
Details
I. foetidissima is an evergreen perennial to 80cm, with glossy rich green leaves and small, yellow-tinged, dull purple flowers followed by large pods opening to show bright orange-red seeds, which persist into winter