FIG. 52. — Photographic documentation of field characters in Cyathea: A-D, F, habit; A'-D', F', trunk apex; A"-D", F", trunk surface at breast height; A-A", Cyathea boivinii Mett. ex Kuhn var. boivinii; B-B", C. boivinii var. hildebrandtii (Kuhn) Janssen & Rakotondr.; C-C", C. boivinii var. andringitrensis Janssen & Rakotondr.; D, D', C. kirkii Hook.; F-F", C. lastii Baker; A", the petiole bases are sometimes completely decayed on older trunks (left), but persistent in most trunks observed (right); E, C. boivinii var. andringitrensis Janssen & Rakotondr., dense tomentum of intricate squamules on the petiole; A, A', A" (left), C, C', uncollected; A" (right), Janssen et al. 2604; B, Janssen et al. 2433; B', Janssen et al. 2442; B", Janssen et al. 2464; C", Janssen et al. 2594; D, D', Labat et al. 3208; E, Janssen et al. 2591; F-F", Janssen et al. 2431. Vouchers at P. Photos A', A" (left), B', B", C-C", E by G. Rouhan (MNHN); D, D' by J.-N. Labat (MNHN); all other photos by T. Janssen. Scale bars: A-D, F, 1 m; A'-D', F', A"-C", F", 10 cm; E, 1 cm.