FIG. 1 in An update of the revision of Cyathea subgen. Alsophila sect. Gymnosphaera (Cyatheaceae) in Madagascar and the Comoros including a discussion of putative hybridization events

FIG. 1. — Photographic documentation of field characters: habit (A-E), and shoot apex (A'-E') are shown for each species; A, A', Cyathea andohahelensis (Tardieu) Rakotondr.; B, B', C. boiviniiformis Rakotondr.& Janssen s.l.; C, C', C. poolii (C.Chr.) Domin; D, D', C. impolita Rakotondr. & Janssen; E, E', C. rouhaniana Rakotondr. & Janssen; F, C. alticola (Tardieu) Rakotondr., habit; G, trunk surfaces in sect. Gymnosphaera are more or less uniform and typically covered by persistent petiole bases like in C. boiviniiformis (left) and C. impolita with the petiole bases partly removed (right). A, A', Rakotondrainibe et al. 4185; B, Janssen et al. 2844; B', Rakotondrainibe et al. 2061; C, Janssen et al. 2846; C', uncollected; D, D', Janssen et al. 2592; E, E', uncollected; F, Rakotondrainibe et al. 3686; G, left, uncollected; right, Janssen et al. 2596. Vouchers at P. Scale bars: A-F, 1 m; A'-E', G, 10 cm. Photos D, D', E, G (right) by G. Rouhan, MNHN.