A small genus of the same habit and inflorescence as the last, differing merely in having four didynamous stamens. The species inhabit the same regions. Named after Professor Celsius of Upsal.

1. C. Cretica. - A showy robust biennial growing from 4 to 6 feet high. Leaves hairy, lyrate-oblong, and the uppermost ovate or lanceolate, toothed. Flowers in a leafy spike about 1 1/2 inch in diameter, yellow with two brown spots near the centre. The filaments of the shorter stamens bearded; the longer stamens and style declinate. A native of Crete, flowering in Summer.

Alonsoa incisifolia, syn. Celsia urticcefolia, is a tender Peruvian perennial having resupinate showy orange-scarlet flowers with a dark blotch. It may be treated as an annual for the open ground.