name and synonyms:
Struwe, Maas, & V. Albert (1997)
Aripuana is named after the river Rio Aripuanã
in Brazil. The
only species, Aripuana cullmaniorum, is named in honor of the philanthropists
Lewis B. and Dorothy Cullman of New York, NY, USA, who supports botanical
research at The New York Botanical Garden.
one, Aripuana cullmaniorum.
Known only from a small area in the
of the village
Nova Aripuanã Prainha
along the river
Brazil, in the southeastern part of Amazonas state.
Lowland, white-sand savanna, also called Amazon caatinga.
or small tree. Leaves petiolate, elliptic. Inflorescences terminal,
many-flowered, with dichasial cymes, with scale-like bracts. Flowers 5-merous,
erect. Calyx campanulate, small, thick, fused for more than 1/2 of its
in fruit; calyx lobes rounded, with a dorsal ridge. Corolla narrowly
salver-shaped, up to 7 cm long, thin, white, with spreading lobes. Corolla
aestivation (=lobe arrangement in bud) valvate at base of lobes and
contort at apex, a unique state among all gentians. Stamens inserted at
the base of corolla lobes, bent outwards from flower; filaments straight. Anthers
oblong, slightly recurved, with small apical appendages. Pollen released as tetrads
with reticulate exine. Gynoecium with basal glandular disk, with inrolled
placentas; style long, slender;
stigma bilamellate. Capsules erect
with twisted, persistent styles. Seeds
many, small, angular.
and related plants:
Aripuana belongs to the tribe Helieae, and
is placed in the Symbolanthus subclade..
uses: None known.
long, narrow and white corollas indicate possible hawkmoth-pollination,
however, no field observations has been made of pollinators.
species (synonyms in parenthesis) and their distribution:
Struwe, Maas, & V. Albert
(southeastern Amazonas State)
L., J. W. Kadereit, J. Klackenberg, S. Nilsson, M. Thiv, K. B. von Hagen,
& V. A. Albert. 2002. Systematics, character evolution, and
biogeography of Gentianaceae, including a new tribal and subtribal
classification. Pp. 21-309. In: L. Struwe & V. A. Albert (eds.),
Gentianaceae: Systematics and Natural History, Cambridge University Press,
L., P. J. M. Maas, & V. A. Albert. 1997. Aripuana
cullmaniorum, a new genus and species of Gentianaceae from
white-sands of southeastern Amazonas, Brazil. Harvard Pap. Bot. 2:
© Lena Struwe, 2004