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Glandular trichomes of R. gorgonias at different conditions. (a) Adaxial leaf side covered with trichomes in air. (b) Adaxial leaf side covered with trichomes in Aqua Millipore water. (c–e) Short glandular trichome in air (c), in water (d), after 24 h submersion in Aqua Millipore water (e). tt, long tentacle-shaped trichome; mt, medium-sized trichome; st, short trichome. Scale bars, (a,b) 2 mm, (c–e) 0.2 mm.
