FIGURE 4 in Who published the name Kalanchoe longiflora (Crassulaceae subfam. Kalanchooideae)? The correct author attribution and typification of this species name

FIGURE 4. Friedrich Richard Rudolf Schlechter (1872–1925), who proposed the name Kalanchoe longiflora. Photograph taken by an unknown photographer in ca. 1893 when Schlechter was in his early-20s (see Jessop 1964: Plate XXIII opposite p. 142). Photograph © of the South African National Biodiversity Institute. Reproduced with permission.