flora neotropica - CNCFlora

Systematic Treatment75
ulate, rugose, eglandular. Stipules lanceolate,
membranous, ca. 2 mm long, caducous. Inflorescences
of terminal and axillary panicles, 4.5-
9 cm long, or rarely of unbranched racemes; rachis
and branches with minute sparse pubescence.
Bracts and bracteoles receptacle cylindrical-turbinate,
15-20 mm long, sparsely
puberulous in bud, soon becoming glabrous, glabrous
within except for dense deflexed hairs
around throat. Calyx lobes five, sparsely puberulous
when young, soon becoming glabrous,
the margins ciliate. Petals five, glabrous, caducous.
Stamens ca. 110, inserted around a complete
circle, the filaments tomentose around base,
glabrous for most of length. Ovary pilose. Style
pilose at base, glabrous above. Fruit unknown.
Distribution (Fig. 103). Known only from the
lower Rio Negro region of Brazil.
Habitat. Forest on terra firme.
Small tree to 8 m tall, the young branches
sparsely puberulous soon becoming glabrous.
Leaf lamina oblong-lanceolate, coriaceous, 5-8
x 1.5-2.4 cm, base subcuneate, apex acuminate,
the acumen 5-15 mm long, with two glands towards
base at junction with petiole, glabrous
above, with sparsely lanate pubescence beneath;
midrib glabrous and prominulous above, prominent
beneath; primary veins 7-10 pairs, prominent
beneath; petioles 4-7 mm long, sparsely
puberulous or glabrous, canaliculate above. Stipules
triangular, 1 mm long. Inflorescences of ter-
minal racemes, the rachis gray-puberulous. Bracts
small and caducous. Receptacle cylindrical,
swollen towards base, 15-18 mm long, sparsely
puberulous on exterior, glabrous within except
for dense pilosity around base of stamens. Calyx
lobes five, rounded, sparsely puberulous on ex-
terior, the margins ciliate. Petals five, white, the
margins ciliate. Stamens numerous, inserted
around a complete circle. Ovary densely pilose.
Style pilose for half of length. Youngfruit ovoid,
exocarp smooth, glabrous; mesocarp fleshy; en-
docarp hard, fragile.
Distribution (Fig. 108). Known only from south
of Manaus.
Habitat. Forest on terra firme.
Additional specimens examined. BRAZIL.
AMAZONAS: Manaus-Porto Velho Hwy., between Rios
Castanho and Araca, 12 Jul 1972 (st), M. F. da Silva
et al. 490 (INPA, NY), 11 Jul 1972 (fl), M. F. da Silva
467 (INPA, NY); km 113, 12 Jul 1972 (fl), M. F. da
Silva et al. 267 (INPA); Furo de Castanho, estrada
Araca, 22 Jul 1972 (fl), M. F. da Silva 1027 (NY); Nova
Olinda, Rio Paca, tributary of Rio Marimari, 2 Jul
1983 (fl), Todzia 2295 (INPA, NY).
Additional specimen examined. BRAZIL. AMAZONAS: Couepia marleneae is most closely related to
Manaus-Caracarai Rd., km 115, Rio Urubu, 13 Aug C. williamsii,
1974 (fl), Prance et al.
differing in the much smaller leaves
21636 (INPA, NY). and few primary nerves, the sparse pubescence
Couepia glabra is quite unlike any of the species and more reticulate venation of the leaf underalready
described, but it is probably closest to C. surface, and the more prominent conspicuous
williamsii from which it differs in the usually glands at the junction of the lamina and the petpaniculate
inflorescence, the larger leaves, the iole of the leaves. In C. williamsii the leaves are
almost glabrous style, the glabrous underside of 9-18 cm long, and 2.5-5.5 cm broad, and have
the leaves, as well as in a number of additional 12-15 pairs of primary veins. Couepia marlenesmall
characters.
ae is also rather similar to C. glabra, but it is not
so closely related, differing in the unbranched
6-35.2. Couepia marleneae Prance, Acta Ama- racemose inflorescence, the much smaller leaves,
z6nica 4(1): 17. 1974. Type. Brazil. Amazonas: the very sparse but definite pubescence of the
Manaus-Porto Velho Rd., between Rios Cas- exterior of the flowers, and the glands at the lamtanho
and Tupana, 17 Jul 1972 (fl), M. F. da ina base.
Silva et al. 822 (holotype, INPA; isotype, NY).
6-38. Couepia trapezioana Cuatrecasas, Brittonia8:
197. 1956. Fig. 118.
Additional specimens examined. PERU. LORETO: Rio
Ampiacu, Puca Urquillo, 24 Sep 1972 (fl), Croat 20663
(MO, NY); Rio Nanay, Mishana, 16 Aug 1978 (fl),
Ramirez C. 87 (MO, NY).
6-41.1. Couepia dolichopoda Prance, Brittonia
26: 302. 1974. Type. Peru. Loreto: Varadura
de Mazan, from Rio Amazonas to Rio Napo
(fl), Croat 19382 (holotype, NY; isotype, MO).
Tree to 30 m tall, the young branches com-
pletely glabrous. Leaf lamina elliptic, coria-
ceous, 9-11.5 x 3.8-5.3 cm, cuneate at base,
acuminate at apex, the acumen 10-15 mm long,
glabrous on both surfaces; midrib prominulous