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Anatomy of the leaves and stems of Psychotria capillacea in the cross-section ((a–d,f–n): light microscopy; (e,o,p): FESEM). (a–h) Petiole (i–p). Stem. (al, alkaloids; fi, fibers; pc, phenolic compound; ph, phloem, pi, pith; rb, raphide bundle; sg, starch grains; xy, xylem). Scale bar: (a,i) = 500 µm; (b) = 300 µm; (k) = 200 µm; c,(d,f–h,j,l–n) = 50 µm; e,o,p = 10 µm.
