Ocotea spanantha 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: 268

publication ID

http://doi.org/ 10.5252/a2013n2a5

persistent identifier

http://treatment.plazi.org/id/C71C7428-FFC5-FFE9-F7EC-60CCFE78CEA4

treatment provided by

Carolina

scientific name

Ocotea spanantha van der Werff
status

 

30. Ocotea spanantha van der Werff   , sp. nov. ( Figs 11 View Fig , 13 View FIG )

Ocoteae ambrensi similis   , sed foliis floribusque majoribus, inflorescentiis paucifloris recedit.

TYPUS. — Madagascar, Antsiranana, Réserve spéciale de Manongarivo, à l’est d’Ankaramibe Bekolosy , 14°03’05’’S, 48°17’07’’E, 700-900 m, XII.1993, fls, fr., Rakotomalala & Fernand 92, (holo-, MO [2299154]; iso-, P [ P00713427]) GoogleMaps   .

PARATYPE. — Madagascar. Antsiranana, Ambilobe, Beramanja, Anketrabe , forêt de Kalabenono, 818 m, fr., Callmander, Vasaha & Malaza 562 ( MO)   .

DISTRIBUTION. — This species is only known from the two collections listed above.

PHENOLOGY. — Flowers: December; fruits: November, December.

DESCRIPTION

Tree, 15 m. Twigs angular, minutely appressed pubescent, soon becoming glabrous; terminal buds densely appressed pubescent with a few persistent bracts at the base. Leaves 7-13 × 2.5-6 cm, elliptic, glabrous,firmly chartaceous, the base acute or obtuse, the apex bluntly acute, venation immersed on the upper surface, weakly raised on the lower surface, lower surface densely and minutely gland-dotted, lateral veins 5-7 on each side, domatia absent. Inflorescences along leafless short shoots, 2-7 cm long, with a few cymes basally, distally racemose; short shoots with pubescent, persistent bracts, these 3-6 mm long. Flowers 6-8 mm in diameter, tepals spreading at anthesis; tepals 2-3 mm long, sparsely pubescent outside, densely pubescent inside; stamens 9, all 4-celled, dorsally pubescent, the outer six 1 mm long, inner three 1.5 mm long, glands present at the base of the inner stamens; staminodia 3, stipitiform, pubescent; pistil glabrous, 2 mm long, with a short style; receptacle deep, glabrous inside. Fruit 2.5 × 2 cm, cupule deeply cup-shaped, 3 cm wide, 1.5 cm high, without remnants of tepals.

REMARKS

Ocotea spanantha   sp. nov. shares with Ocotea ambrensis   sp. nov. the presence of bracts along the leafless short shoots. It differs from that species in its larger leaves and flowers, in its few-flowered inflo- rescences and the entire margin of the cupule. The side branches of the inflorescences leave the main axis almost under a 90 degree angle in O. spanantha   sp. nov., whereas these branches are ascending, under a sharp angle in O. ambrensis   sp. nov. The widespread and variable O. racemosa   has often also inflorescences along leafless short shoots, but in that species the somewhat persistent bracts below the terminal buds are lacking.

MO

Missouri Botanical Garden

P

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