Ocotea eriothyrsa 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 : 249-250

publication ID	https://doi.org/ 10.5252/a2013n2a5
DOI	https://doi.org/10.5281/zenodo.6468397
persistent identifier	https://treatment.plazi.org/id/C71C7428-FFEA-FFC5-F587-6365FDD2CDC5
treatment provided by	Carolina
scientific name	Ocotea eriothyrsa Kosterm.
status

Treatment

10. Ocotea eriothyrsa Kosterm. View in CoL

( Fig. 4 View FIG )

Communication (Pengumuman) of the Forest Research Institute, Indonesia 60: 12 (1957).

TYPUS. — Madagascar. Ambomitombo , Ambositra , 29.IX.1952, fls, Service Forestier 6356 (holo-, P [ P00541612 ]! ; iso-, P [ P00541613 ]!, TEF) .

DISTRIBUTION. — Ocotea eriothyrsa is only known from the type collection, made near Ambohimitombo. The altitude is not mentioned on the label; the Gazetteer to Malagasy collecting Localities gives an altitude of 1300 m for Ambohimitombo.

PHENOLOGY. — Flowers: September.

VERNACULAR NAME. — Varongy mainty.

DESCRIPTION

Tree of unknown size. Twigs angular, brown pubescent when young, but soon becoming glabrous; hairs ± appressed; terminal buds densely appressed pubescent. Leaves alternate, coriaceous, 5-8 × 2.3- 3.2 cm elliptic, glabrous, base acute, apex shortly acuminate, lateral veins 5-8, these and tertiary venation raised on both surfaces, domatia absent. Petioles 4-8 mm long, glabrous, canaliculate. Inflorescences in axils of bracts, 5-8 cm long, appressed brownpubescent. Pedicels 2-3 mm long, gradually widened towards the flowers, densely pubescent. Tepals 6, equal, the basal part and floral tube densely pubescent, the upper ⅔ sparsely pubescent; 2-2.5 mm long, inside sparsely pubescent; stamens 9, 4-celled, c. 1.5 mm long, filament c. 0.5 mm long, sparsely pubescent, anthers of outer stamens incurved, inner three stamens erect, with 2 large glands at base of filaments, staminodia 3, stipitiform, pubescent, c. 1 mm long; pistil glabrous 2 mm long, ovary as long as style, receptacle cup-shaped, mostly glabrous, but with a patch of hairs at the bottom. Cupule bowl-shaped, 1.3 cm in diameter, 0.5 cm tall. Fruit unknown.

REMARKS

Ocotea eriothyrsa can be recognized by the combination of leaves with lax reticulation raised on both surfaces and the brown-pubescent inflorescences and flowers with pedicels longer than the flowers themselves. Its closest relative is Ocotea sessiliflora Kosterm. and differences between the two species are discussed under that species. It shares the lax, raised reticulation with O. nervosa , but the latter species differs in its larger, wider leaves.