Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Scanning electron micrographs of nectar-exuding tissues in Disa species with stomatal nectaries. (A) Stoma-studded ridge in spur of D. brevicornis. (B) D. sabulosa. (C) D. rufescens. (D, E) High density of modified stomata in the spur of D. chrysostachya. (F) D. scullyi. (G) D. versicolor. (H) D. crassicornis. Scale bars: (A, C, F) = 100 μm; (B) = 20 μm; (D) = 500 μm; (E, G, H) = 50 μm.
