Rhodolaena bakeriana Baill.

Schatz, George E., Lowry Ii, Porter P. & Wolf, Anne-Elizabeth, 2000, Endemic families of Madagascar. VI. A synoptic revision of Rhodolaena (Sarcolaenaceae), Adansonia (3) 22 (2), pp. 239-252 : 243-244

3. Rhodolaena bakeriana Baill.

Bull. Mens. Soc. Linn. Paris 1: 566 (1886).

— Lectotype (here designated): Baron 1980, Madagascar, without precise locality ( P!; iso-, K!, P!).

Rhodolaena bakeriana is a medium-sized tree that occurs in mid-elevation subhumid forest from Ranomafana PN to Ambohitantely RS, and east to Anjozorobe, Ambatovy and Analamazaotra-Périnet RS ( Fig. 1 ). It can be recognized by its densely brownish pubescent twigs, and chartaceous leaves usually with an emarginate apex and the margins often folded under in dried material. Several recent collections have been made of this species.

BAILLON (1886a) recognized that the material referred to by BAKER (1883) as Rhodolaena altivola Thouars in fact represented a new species, for which he proposed the name R. bakeriana , referring to BAKER’ s description (see also BAILLON 1886b). BAILLON’ s new species was based on several collections ( Baron 1980 and 2173; Hildebrandt 3823), which represent syntypes, although the last one was not cited by BAKER (1883; but see BAKER 1886). The first syntype ( Baron 1980) comprises material in full flower, whereas the second number is not (or is no longer) represented in the Paris herbarium, although two unnumbered sheets clearly belonging to R. bakeriana may well be attributable to this number. We have therefore selected Baron 1980 as the lectotype.

VERNACULAR NAMES.— Anjananjana, Arina, Fontona, Fotana, Fotoana, Fotona, Tavaratra.

MATERIAL EXAMINED. — Andrianjafy 23, Analamazaotra-Périnet RS ; Andriatsiferana 2094, Ambatovy ; Baron s.n., 1980, 3649, without precise locality; Cours 4069 (= Herb. St. Agric. Alaotra 4069), Ambatoharanana ; d’Alleizette 710, Ampasakely ( Mandraka ); Descoings 33, Sandrangato ; Dorr 4493 , Analamazaotra-Périnet RS , 4575, Sandrangato ; Gentry 52559, 52648, Analamazaotra-Périnet RS ; Herb. Forest. Madag. 66, without precise locality; Herb. Inst. Sci. Madag. 4654, Analama ; Hildebrandt 3823, without precise locality; Labat 3081, Analamazaotra-Périnet RS ; Leandri 710, Analama ; Mabberley 812, Analamazaotra-Périnet RS ; Miller 3747, Analamazaotra-Périnet RS ; Perrier de la Bâthie 5335, Analamazaotra-Périnet RS ; Rakotomalaza 1076, Ambatovy, 1319, Analamay ; Rakotozafy 2685, Anjozorobe ; Réserves Naturelles 35, 44, 1299, Analamazaotra-Périnet RS ; Schatz 3640, Anjozorobe, 3988, Analamazaotra-Périnet RS ; Schedl 64, Analamazaotra-Périnet RS ; Service Forestier 1170, Analamazaotra-Périnet RS , 2196, Anosibe-Moramanga, 2922, 4654, Analamazaotra-Périnet RS, 5811, Lakato, 8342, 8357, Analamazaotra-Périnet RS, 8371, Ambohitantely RS, 12432, 15004, 15686, Analamazaotra-Périnet RS, 15868, Antsahambavy, 17930, 18047, Analamazaotra-Périnet RS, 23214, Ranomafana PN, 24418, Sandrangato, 25322, 25715, 25716, 25717, 25760, 25763, 26022, 26023, 26188, 28137, Analamazaotra-Périnet RS, 28781bis, Fierenana (Moramanga), 30642, 31085, 34083, Analamazaotra-Périnet RS, 17-B-R-172, 76-R-211, 131-R-172, 169-R-172, Analamazaotra-Périnet RS, 420-R-212, without precise locality; Thouvenot 44, Analamazaotra-Périnet RS ; Ursch 10, 83, Analamazaotra-Périnet RS .

Figures

Fig. 1. — Distributions of Rhodolaena, mapped on the bioclimatic zones of Madagascar (after CORNET 1974; see SCHATZ 2000). R. acutifolia (•), R. altivola (*), R. bakeriana (Δ), R. leroyana (-).