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 2534bis, 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).