DARWINIANA
34(1-4): 233-244. 1996
ESTUDIO PALINOLOGICO DE LAS ESPECIES ARGENTINAS DE MACROPTILIUM
(FABACEAE)1
SUSANA I. DREWES
Laboratorio de Plantas Vasculares. Dpto de Cs. Biológicas.
Facultad de Ciencias Exactas y Naturales. UBA. Pab. II, 4to. Piso, Ciudad
Universitaria. 1428. Buenos Aires, Argentina
ABSTRACT: Drewes, S. I. 1996. Palynological studies of the argentinian
species of Macroptilium (Fabaceae). Darwiniana 34: 233-244.
The pollen morphology of nine species of Macroptilium (Benth.)
Urb.: M. panduratum (Benth.) Maréchal & Baudet, M. longepedunculatum
(Benth.) Urb., M. lathyroides (L.) Urb., M. bracteatum (Benth.)
Maréchal & Baudet, M. erythroloma (Benth) Urb., M. fraternum
(Piper) Juárez & Pérez, M. psammodes (Lindman) Drewes & Palacios,
M. prostratum (Benth) Urb and M. arenarium (Bacigalupo) Drewes
& Palacios were studied with the photonic and scanning electron microscope.
It is possible to differenciate them in two groups: 1) an homogeneous one,
section Macroptilium, with colporate, spherical and reticulate or
microreticulate grains; 2) an heterogeneous one, section Microcochle
(Benth) Lackey, with porate or colporate, suboblate grains with different
ornamentation. In the section Macroptilium the separation at species
level is difficult due to the similarity of their grains, but in the section
Microcochle they can be recognized by the type of
ornamentation. The main purpose of this paper is to determine the pollen
diagnostic characters that allow species identification.
1 Trabajo presentado en el VI Congreso Latinoamericano
de Botánica. Octubre 1994.