Ocotea nervosa Kosterm.
Creators: name: Werff, Henk Van Der
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Laurales
Lauraceae
Ocotea
Ocotea nervosa

description: 24. <i>Ocotea nervosa</i> Kosterm. (Fig. 10) <i>Notulae systematicae</i> 8: 80 (1939). — Typus: <b>Madagascar</b>, Vondrozo, Farafangana, 1.IX.1926, fr., <i>Decary 4914</i> (holo-, P [P00541635]!; iso-, P [P00541634]!). SELECTED SPECIMENS SEEN. — Fianantsaroa, Ampamaherana, <i>Service Forestier 3184</i> (MO, P[P01955960], TEF); Fianarantsoa, Parc national de Ranomafana, <i>Rakoto &amp; Turk 104</i> (MO, P[P01955965], TAN); Fianarantsoa, Ranomafana National Park, near village of Miaranomy, Anosimasina, <i>Malcomber et al. 1604</i> (MO, P[P01955963], TAN). DISTRIBUTION. <i>— Ocotea nervosa</i> has been collected on the eastern escarpment from Vatomandry to Farafangana between 600 and 1350 m altitude. PHENOLOGY. — Flowers: August; fruits: December, March, June. VERNACULAR NAMES. — Varongy, varongy mainty, varongy fotsy, taforona, varongyvaza. DESCRIPTION Tree, to 20 m. Twigs angular, finely appressed pubescent with whitish hairs, quickly becoming glabrous; terminal buds densely appressed pubescent. Leaves alternate, firmly chartaceous, elliptic or broadly elliptic, 7-21 × 5-11 cm, glabrous, base acute or obtuse, apex obtuse or acute, lateral veins 6-9, not very strongly developed, arching upwards near the margin, midrib and lateral veins raised, tertiary venation forming a lax reticulum on both surfaces, domatia absent. Petioles glabrous 1.2-1.5 cm long. Inflorescences axillary along leafless short shoots, pubescent, 3-8 cm long, cymose-paniculate. Flowers 5-6 mm in diameter, the tepals half-erect. Tepals 6, equal, sparsely appressed pubescent on outer surface, the inner surface more densely pubescent, 2 mm long; stamens 9, 4-celled, 1.5-2 mm long. Filaments pubescent, inner 3 stamens with 2 glands at the base of the filaments. Pistil glabrous, 2.5 mm long, style as long as ovary, receptacle deep, cup-shaped, appressed pubescent inside. Fruit initially enclosed in the receptacle, at maturity cupule cup-shaped, <i>c.</i> 2 cm in diameter, 1-1.5 cm high, often with 3 pronounced ribs on the outside, mature fruit ellipsoid, 2.5 × 1.7 cm. REMARKS <i>Ocotea nervosa</i> is one of the three <i>Ocotea</i> species with rather large leaves which have a raised reticulation on the upper leaf surface. <i>Ocotea cryptocaryoides</i> has glabrous inflorescences and glabrous twigs (pubescent in <i>O. nervosa</i>), while <i>O. cymosa</i> differs in having a finer reticulation on the leaves. The cupules of <i>O. nervosa</i> have sometimes three ribs on the outside and resemble in this the 6-ribbed cupules of <i>O. cryptocaryoides</i>. The type of <i>O. nervosa</i> consists of a twig with leaves and detached fruits. The leaves of the type are large and oblong and do not quite match the other collections placed here.
description: Published as part of <i>Werff, Henk Van Der, 2013, A revision of the genus Ocotea Aubl. (Lauraceae) in Madagascar and the Comoro Islands, pp. 235-279 in Adansonia (3) (3) 35 (2)</i> on pages 262-263, DOI: 10.5252/a2013n2a5, http://zenodo.org/record/5206484
description: {"references": ["KOSTERMANS A. J. G. H. 1939. - Enumeratio Lauracearum Madagascariensium et ex Insulis Mascarenis. (Revisio Lauracearum VI). Notulae systematicae 8 (2): 67 - 128."]}