Aspidostemon andohahelense, Van der Werff, 2006

Werff, Henk Van Der, 2006, A revision of the Malagasy endemic genus Aspidostemon Rohwer & Richter (Lauraceae), Adansonia (3) 28 (1), pp. 7-44 : 13-16

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Aspidostemon andohahelense


1. Aspidostemon andohahelense

Van der Werff, sp. nov. ( Figs 1A View FIG ; 2A View FIG )

Aspidostemoni microphyllo simile, sed foliis majoribus, tenuioribus et locellis minutis distinguenda; A. trianthera tepalis non incrassatis, floribus latioribus quam longioribus differt.

TYPUS. — Madagascar. Prov. Toliara, Andohahela, Réserve intégrale 11, 24°45’S, 46°51’E, 250-500 m, 17-20.X.1992, fl., Van der Werff, Malcomber, Gray & Rapanarivo 12748 (holo-, MO; iso-, B, BR, HBG, K, L, LE, MO, NY, P, PRE, QRS, TAN, TI, US) GoogleMaps .

PARATYPES. — Madagascar. Ifarantsa , [24°53’S, 46°52’E], bud, Réserves Naturelles 8182 ( P) GoogleMaps . — Col du Maningotry, route d’Ifarantsa à Ranomafana , [24°53’S, 46°52’E], fl., Service Forestier 8512 ( MO, P, TEF) GoogleMaps . — Col du Maningotry, Isaka-Ivondro, Ifarantsa , [24°53’S, 46°52’E], fl., Service Forestier 14161 ( P, TEF) GoogleMaps . — Toliara, Andohahela, Réserve intégrale 11, 24°45’S, 46°51’E, Van der Werff et al. 12737 ( BR, CAS, G, HBG, KUN, K, L, LE, MO, P, PRE, QRS, US) GoogleMaps . — Idem , fl., Van der Werff et al. 12738 ( HBG, MO, P, QRS, TAN) .


Trees, to 10 m. Twigs terete, glabrous or with a few appressed hairs near the tip, lenticellate; terminal buds with a fringe of hairs. Leaves opposite, 6-9 × 2-3 cm, glabrous, thinly chartaceous, the base acute, apex acuminate, acumen 4-8 mm long, margin flat, reticulation immersed on the upper surface, weakly raised on the lower surface, lateral veins 8-10, petioles 4-6 mm long, canaliculate. Inflorescences to 1.5 cm long, with a few scattered, appressed hairs, pedicels 2 mm long. Flowers 3 mm in diam., 2 mm long, glabrous, disc-shaped, tepals wider than long, erect to incurved; stamens 6, their tips peltately expanded, locelli apical-lateral, minute; staminodia III with the tips greatly enlarged, fused, forming a shieldlike structure; filaments of stamens and staminodia pubescent with red, curly hairs. Fruits unknown.


Aspidostemon andohahelense is best recognized by its rather thin leaves, presence of 6 (or 3, see below) stamens with small, apical locelli and the scattered hairs on the inflorescence; it is close to A. microphyllum ; differences between the two species are discussed under A. microphyllum . It is only known from the SE of Madagascar ( Fig. 3 View FIG ). The three collections made by Van der Werff et al. were found along the same trail, growing not far apart and are vegetatively very similar – same leaf shape, leaf texture, scattered hairs on the inflorescence. However, two of those have mostly flowers with 3 stamens, while one, the type of A. andohahelense , has flowers with 6 stamens. The simplest explanation for this is that this species has 6 stamens, but that in young flowers only the outer three open, while in mature flowers all 6 stamens are open. The alternative, regarding the collection with 6 stamens as a different species from the one with 3 stamens, overlooks the very strong vegetative similarity between these specimens. See also comments under A. occultum and A. manongarivense .

A paratype of A. andohahelense was cited by Kostermans as a paratype of A. trianthera . As accepted here, A. trianthera has strongly thickened tepals, which give the flowers a 6-lobed appearance.


200-500 m.


Flowers: August, September, October.


Oviary, Hazomasina, Sagna.


Missouri Botanical Garden


Botanischer Garten und Botanisches Museum Berlin-Dahlem, Zentraleinrichtung der Freien Universitaet


Embrapa Agrobiology Diazothrophic Microbial Culture Collection


Hiroshima Botanical Garden


Royal Botanic Gardens


Nationaal Herbarium Nederland, Leiden University branch


Servico de Microbiologia e Imunologia


William and Lynda Steere Herbarium of the New York Botanical Garden


Museum National d' Histoire Naturelle, Paris (MNHN) - Vascular Plants


South African National Biodiversity Institute (SANBI)




Parc de Tsimbazaza


Herbarium of the Department of Botany, University of Tokyo


University of Stellenbosch


Centre National de la Recherche Appliquée au Developement Rural


California Academy of Sciences


Conservatoire et Jardin botaniques de la Ville de Genève


Kunming Institute of Botany, Chinese Academy of Sciences