Ocotea grayi van der Werff

Werff, Henk Van Der, 2013, A revision of the genus Ocotea Aubl. (Lauraceae) in Madagascar and the Comoro Islands, Adansonia (3) 35 (2), pp. 235-279: 252-253

publication ID

http://doi.org/ 10.5252/a2013n2a5

persistent identifier

http://treatment.plazi.org/id/C71C7428-FFF5-FFD8-F652-60CCFE11CD24

treatment provided by

Carolina

scientific name

Ocotea grayi van der Werff
status

 

14. Ocotea grayi van der Werff   ( Fig. 3 View FIG )

Novon 6: 465 (1996).

TYPUS. — Madagascar. Toliara, Réserve Intégrale 11 (Andohahela), van der Werff et al. 12732 (holo-, MO!; iso-, B, G, GH, K, L, LE, MO!, NY, P, PRE, QRS, TAN)   . SELECTED SPECIMENS SEEN. — Fianarantsoa, Midongy du Sud, Beharana II, forêt d’Anamangy, Andrianjafy et al. 1203 ( MO, P)   ; Fianarantsoa, Ranomafana National Park, Malcomber et al. 1610 ( MO, P [ P02009657], TAN)   ; Toliara, NW of Fort Dauphin along road to Ranomafana, McPherson & Rabevohitra 14975 ( MO, P [ P02009658], TAN, TEF)   ; Toliara. Réserve Intégrale 11 (Andohahela), van der Werff et al. 12745 ( MO, P, QRS, TAN)   ; Vestiges de forêt orientale très dégradée sur la route de Farafangana à Ambalatany, Service Forestier ( Capuron ) 23564 ( MO, P [ P01991762], TEF)   .

DISTRIBUTION. — Ocotea grayi   is known from forests on the eastern slope from Brickaville south to Ft. Dauphin and inland to Ranomafana and Fianarantsoa, up to 1000 m elevation.

PHENOLOGY. — Flowers: August-November (mostly September-October); fruits throughout the year.

VERNACULAR NAMES. — Varongirwinbakoka, varongy, varongy fotsy, varongi mainty.

DESCRIPTION

Tree, to 25 m. Twigs terete, yellow-brown tomentellous when young, glabrescent; terminal buds tomentellous. Leaves 9-19 × 4-9 cm, alternate, tripliveined, chartaceous, elliptic to broadly elliptic, base acute or obtuse, apex acute or acuminate, lateral veins 3-5; upper leaf surface initially pubescent, soon becoming glabrous, venation immersed, lower surface with a sparse to dense indument of erect, curled hairs, venation clearly raised; domatia present, consisting of shallow pockets covered by a dense tuft of hairs. Petioles 0.8-1.5 cm long, with a similar indument as the twigs. Inflorescences (densely) pubescent, paniculate-cymose, in axils of leaves, to 12 cm long. Flowers creamy white to pale yellow, tepals 6, pubescent on both surfaces, c. 2 mm long; stamens 9, all 4-celled, 1 mm long, filaments pubescent, anthers glabrous, glands present at the base of the inner stamens, staminodia stipitiform, pubescent. Ovary and inside of the receptacle gla- brous. Fruit roundish, c. 2 cm in diameter, cupule deeply cup-shaped, to 2.5 cm wide, 1.5 cm high.

REMARKS

Ocotea grayi   is characterized by the presence of domatia, tripliveined leaves, erect indument on lower leaf surface and its rather long inflorescences. Most collections placed in this species were previously identified as Ocotea trichophlebia Baker. This   latter species differs from O. grayi   in its pinnately veined leaves, lack of domatia and smaller leaves and inflorescences. Ocotea trichophlebia   also occurs at higher elevations than O. grayi   .

MO

Missouri Botanical Garden

B

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

G

Conservatoire et Jardin botaniques de la Ville de Genève

GH

Harvard University - Gray Herbarium

K

Royal Botanic Gardens

L

Nationaal Herbarium Nederland, Leiden University branch

LE

Servico de Microbiologia e Imunologia

NY

William and Lynda Steere Herbarium of the New York Botanical Garden

P

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

PRE

South African National Biodiversity Institute (SANBI)

QRS

CSIRO

TAN

Parc de Tsimbazaza

TEF

Centre National de la Recherche Appliquée au Developement Rural