A revision of the genus Ocotea Aubl. (Lauraceae) in Madagascar and the Comoro Islands
Author
Werff, Henk Van Der
Missouri Botanical Garden, P. O. Box 299, St. Louis, MO, 63166 (USA)
henk.vanderwerff@mobot.org
text
Adansonia
2013
3
2013-12-31
35
2
235
279
http://dx.doi.org/10.5252/a2013n2a5
journal article
55916
10.5252/a2013n2a5
93b27db0-ab0a-40d9-862c-1a5c68678186
1639-4798
5206484
19.
Ocotea longipedicellata
van der Werff
(
Fig. 6
)
Novon
6: 465 (1996)
.
TYPUS
. —
Madagascar
.
Canton Sahatavy
, District
Vavatenina
,
17.X.1960
,
Réserves Naturelles 11386
Rakotondramisa
(
holo-
,
P
[
P00648796
]!)
.
SPECIMENS EXAMINED. —
Canton Sahatavy
,
District Vavatenina
,
RN 11386
Rakotondramisa
(
P
)
;
Toamasina
,
Zahamena
,
Réserve Intégrale
3,
Randrianjanaka
8
(MO, P[
P01991803
], TAN)
;
Toamasina
,
Zahamena
,
Randrianjanaka
225
(MO, P [
P01991804
], TAN)
;
Toamasina
,
Maroantsetra
,
Antsirabesahatany
,
Antilahimena
et al. 1625
(MO, P)
.
DISTRIBUTION. — Known from Vavatenina, Zahamena and the Maroantsetra district at altitudes of
600-1000 m
.
PHENOLOGY. — Flowers: October; fruits December.
DESCRIPTION
Shrub. Twigs terete, slender, glabrous; terminal buds glabrous. Leaves 6-11 ×
2-3.5 cm
, alternate, chartaceous, elliptic or narrowly elliptic, glabrous, the base acute, apex acuminate, upper surface smooth, lower surface with the 7-9 lateral veins weakly raised; domatia lacking. Petioles glabrous,
6-10 mm
long. Inflorescences in the axils of deciduous bracts, glabrous, paniculate-cymose,
5-8 cm
long, laxly flowered. Pedicels slender,
1-1.5 cm
long. Flowers glabrous, tepals spreading; tepals 6, 2-
2.5 mm
long, the inner surface with a few hairs near the base; stamens 9, all 4-celled,
c.
1.3 mm
long, filaments about as long as the anthers, inner stamens with 2 glands at the base; pistil
2 mm
long, glabrous; receptacle deep, glabrous inside. Cupule cup-shaped,
1.5 cm
wide,
0.8 cm
high, pedicel scarcely thickened; fruit ellipsoid, 2 ×
1.5 cm
.
REMARKS
This species is readily recognized by its glabrous condition, acuminate leaves and the slender inflorescences with long-pedicelled flowers.Only three other species share the glabrous condition:
O. madagascariensis
,
which has obtuse, somewhat obovate leaves with coarse, raised reticulation,
O. sambiranensis
, which can be recognized by its raised reticulation, presence of small gland dots on the lower leaf surface and shorter pedicels and
O. glaberrima
sp. nov.
, a small shrub with small, obtuse leaves.