Eremolaena rotundifolia (F. Gérard) Danguy, 1915

Lowry Ii, Porter P., Haevermans, Thomas, Labat, Jean-Noël, Schatz, George E., Leroy, Jean-François & Wolf, Anne-Elizabeth, 2000, Endemic families of Madagascar. V. A synoptic revision of Eremolaena, Pentachlaena and Perrierodendron (Sarcolaenaceae), Adansonia (3) 22 (1), pp. 11-31 : 15

2. Eremolaena rotundifolia (F. Gérard) Danguy

Bull. Mus. Natl. Hist. Nat. 21: 202 (1915). — Rhodolaena rotundifolia F. Gérard, Compt. Rend. Hebd. Séances Acad. Sci. 58: 1704 (1914).

— Type: Perrier de la Bâthie 3015, Madagascar, Prov. Fianarantsoa, dunes littorales du bas Faraony (SE), [21°47’S, 48°10’E], Oct. 1911 (holo-, P!; iso-, P!) .

Eremolaena rotundifolia is restricted to littoral forests on sand from Masoala PN to the Ft. Dauphin area ( Fig. 1 ). It can be distinguished by its small, chartaceous leaves with the venation weakly raised on the lower surface, and its small flowers with the sepals 9-12 mm long. This species had been collected recently at Masoala PN and in the Ft. Dauphin area, but has not been recorded from elsewhere for over 30 years.

VERNACULAR NAMES. — Amaninombilahy fotsy, Anjananjana, Fotona, Fotonala, Fotonalahy, Menahy lahy, Takodizahana lahy, Voantalanina.

MATERIAL EXAMINED. — Baron 6101, without precise locality; Bernard 254, 294, Masoala PN ; D’Arcy 15391, 15405, Fort Dauphin ; Dorr 4050, Fort Dauphin ; Geay 7533, 8113, 8114, Mananjary ; Guillaumet 2534 bis, Soanierana-Ivongo ; Louvel 66, without precise locality; Perrier de la Bâthie 3015, Faraony , 18119 Mahanoro ; Rabevohitra 1942, Ste. Luce ; Rakotozafy 599, Mahanoro , 2054, Mandena STF ; Réserves Naturelles 9536, Masoala PN ; Service Forestier 2114, Faraony , 2854, 3362, Mandena STF , 4586, Mahanoro , 4907, Ambilabe , 7256, Ambila-Lemaitso STF , 7493, Lanihiry , 9169, Tenina , 9192, Tampolo STF , 9696, Ste. Luce , 11763, Ambinanibe , 11786, Bemangidy , 13095, 13325, Tampolo STF , 14662, Faraony , 16893, Tampolo STF , 19623, Miakara , 27750, Ambalabe , 28653, Ste. Luce , 28868, Ambohidena .

Figures

Fig. 1. — Distributions of Eremolaena, mapped on the simplified bioclimatic zones of Madagascar (SCHATZ in press, after CORNET 1974). E. humblotiana (•), E. rotundifolia (Δ).