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. 2016 Mar 5;254(1):353–366. doi: 10.1007/s00709-016-0956-0

Fig. 11.

Fig. 11

Nectary spur structure and micro-morphology of Utricularia nelumbifolia. a Section through flower. Note the presence of nectar (star) within the spur. b Adaxial wall of spur showing papillose external surface (ExP) and papillae with cuticular striations enclosing the lumen (IP); bar = 100 μm. c Small, conical papillae with cuticular striations on the internal adaxial surface of the spur; bar = 50 μm. d Internal, adaxial surface of spur with conical papillae and nectar-secreting glandular trichomes; bar = 300 μm. e Nectar-secreting glandular trichome; bar = 20 μm. f Surface of head cells of glandular trichome with micro-droplets of secretion; bar = 5 μm