Perrierodendron boinense (H. Perrier) Cavaco

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 : 20-21

1. Perrierodendron boinense (H. Perrier) Cavaco

Bull. Mus. Natl. Hist. Nat., sér. 2, 23: 138 (1951). — Eremolaena boinensis H. Perrier, Bull. Soc. Bot. France 72: 311 (1925). — Lectotype (here designated): Perrier de la Bâthie 3031, Madagascar, Prov. Mahajanga, Bongolava, [15°46’S, 47°23’E], Nov. 1906 ( P!; isolecto-, K!, P!, TAN).

Perrierodendron boinense is distributed in dry, deciduous forest from Analalava to Bongolava and Ankarafantsika RNI ( Fig. 4 ), apparently on sandy substrates. It resembles and is probably closely related to P. occidentalis . Diagnostic characters include its distinctly ribbed fruit with a blunt protuberance at the apex and a thick, almost bony endocarp, and sepals that are ca. 8-9 mm long and petals ca. (10-) 11-13 mm long. Perrierodendron boinense , known from ten gatherings, has been collected several times within the last decade, including twice at Ankarafantsika RNI.

PERRIER DE LA BÂTHIE (1925) cited two of his own collections when he described Eremolaena boinensis , one of which (3031) has immature fruits and is here selected as the lectotype; the other material (1644) is assigned to Perrierodendron occidentalis .

MATERIAL EXAMINED. — Perrier de la Bâthie 3031, Bongolava; Réserves Naturelles 1055, 4741, Ankarafantsika RNI; Service Forestier 3-R-215, Ampijoroa STF, 67, without precise locality, 18794, Ambarijeby Atsimo, 19251, Betaramahamay, 34400, Ampijoroa STF, 34759, 34825, Ankarafantsika RNI.

Figures

Fig. 4. — Distributions of Perrierodendron, mapped on the simplified bioclimatic zones of Madagascar (SCHATZ in press, after CORNET 1974). P. boinense (*), P. capuronii (+), P. occidentalis (•), P. quartzitorum (Δ), P. rodoense (-).