|G. Gymnostoma, syn. seemannia gymnostoma is a rhizomatous perennial with funnel shaped leaves and rose pink flowers to 1-1/2 inch long in the summer. Gloxinia requires a minimum night temperture of 60 F, the tubers are planted in March and bloom in the summer. Tubular or bell or funnel shaped flowers bloom singly or in pairs on erect stems 2 to 4 feet tall.