Ocotea perforata Kosterm.

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: 263-264

publication ID

http://doi.org/ 10.5252/a2013n2a5

persistent identifier

http://treatment.plazi.org/id/C71C7428-FFF8-FFD7-F65F-6538FB90CE9B

treatment provided by

Carolina

scientific name

Ocotea perforata Kosterm.
status

 

25. Ocotea perforata Kosterm.   ( Fig. 11 View Fig )

Communication (Pengumuman) of the Forest Research Institute, Indonesia 60: 20 (1957). Ocotea oligantha van der Werff, Novon   6: 469 (1996). —

Typus: Madagascar, Massif de Vohibe-Antoetra   ,

1.XII.1964, fls, Service Forestier (Capuron) 23856

(holo-, MO!; iso-, P[P00074126]!). TYPUS. — Madagascar. Ambositra. 22.II.1955, fls, frts, Service Forestier 12463 (holo-, P [ P00573370]!; iso-, P [ P00573369, P00573371])   .

SELECTED SPECIMENS SEEN. — Centre: Massif de l’Ankaratra, Service Forestier (Capuron) 11961, (MO, P[P01955950, P01955951], TEF); Massif du Vohibe - Antoetra, S-SE d’Ambositra, Service Forestier (Capuron) 23856 (MO, P); Fianarantsoa, Parc National de Ranomafana, Rakoto 377 (MO, P[P01955949], TAN); Fianarantsoa, forêt de Ankazomirady Rakotomalaza 709 (MO).

DISTRIBUTION. — Ocotea perforata   is known from several collections, made from Ambositra, to the Ankaratra mountains, between 1300 and 1800 m altitude.

PHENOLOGY. — Flowers: December, (old) February; young fruits: April; mature fruits: February.

VERNACULAR NAMES. — Varongy, varongy mainty.

DESCRIPTION

Small tree, to 12 m. Twigs somewhat angular, glabrous, the bark gray and warty; terminal buds glabrous. Leaves alternate, firmly chartaceous, 7-10 × 2-4 cm, elliptic or narrowly elliptic, base acute or gradually narrowed into the petiole, apex acute, glabrous on both surfaces, midrib, lateral veins and tertiary venation immersed in both surfaces, lateral veins 5-8 on each side, faintly visible; domatia present, consisting of deep pits, with a glabrous, small, slit-like opening, in the axils of the lateral veins as well as along the lateral veins. Petioles glabrous, 5-8 mm long, sometimes poorly differentiated from the lamina because of the decurrent base. Inflorescences axillary, basally glabrous, distally becoming pubescent, 4-7 cm long. Flowers puberulous.Tepals 6, spreading to reflexed in old flowers, pubescent on inner surface c. 2.5 mm long. Stamens 9, 4-celled, 1.3 mm long, glabrous, except for few hairs at base of filaments, staminodia glabrous. Inside of receptacle and ovary glabrous. Detached fruits 1.9 × 1.4 cm: detached cupule shallowly cup-shaped, 1.3 cm in diameter, c. 4 mm deep.

REMARKS

Ocotea perforata   , as here accepted, is characterized by the presence of pit domatia along the lateral veins and glabrous twigs and terminal buds.Domatia may also be present in the axils of the basal lateral veins. It is a species known from the high mountains in central-south Madagascar. I have decided to place the recently described O. oligantha   in synonymy of O. perforata   ; its distribution is the same as for O. perforata   , and it shares the glabrous twigs and terminal buds as well as the presence of domatia along the lateral veins. It was recognized largely on its wider leaves. A recent collection has leaves intermediate in width between O. oligantha   and O. perforata   , which makes the vegetative characters used to separate the two species tenuous.

P

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

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Laurales

Family

Lauraceae

Genus

Ocotea

Loc

Ocotea perforata Kosterm.

Werff, Henk Van Der 2013
2013
Loc

Ocotea oligantha

Werff 1996: 469
1996