Fig. 2
Variation in shape and size of floral callus, mentum and stelidia in the orchid genus Phalaenopsis. a. Phalaenopsis amabilis; b. P. bellina; c. P. celebensis; d. P. equestris; e. P. pulcherima; f. P. pulcherrima. Abbreviations: Ca = callus; Me = mentum; St = stelidia. Scale bar: 100 µm. Photographs by Rogier van Vugt (a) and Dewi Pramanik (b-f)