Spiradiclis tubiflora. A Habitat (the arrow shows the place of growth) B Habit C Stipule D Inflorescence, lateral view E Flower, lateral view F Corolla opened to show floral parts G Capsules, frontal view H Capsules, lateral view I Matured capsules with four valves. Flowers of selected Spiradiclis species, lateral views: J S. longipedunculata K S. fusca L S. malipoensis M S. baishaiensis N S. glabra O S. coccinea. Scale bars: 1 cm (B, D, E, F, K, L, M, N, O); 3 mm (C, G, H, I, J). Photos by Bo Pan, Jing Liu and Lei Wu.