This Atlas was created as a part of Master Thesis research program
at The City University of New York and The New York Botanicl Garden
during 2002-2003 and should not be considered as an extensive
list of all bat-pollinated plants found in French Guiana. The
Pollen Atlas consists of more than 100 SEM pictures illustrating
about 60 species of plants either known or suspected to be pollinated
by bats. For each species, views of the entire pollen grain as
well as a close up of the exine ornamentation are provided. For
some species, additional images are included, especially when
they may give helpful hints for identification of the pollen.
A list of bat-pollinated plants was prepared by comparing the checklist of plants from central French Guiana (Belbenoit et al., 2001; Mori et al., 2002) with species of plants reported to be pollinated by bats in the literature (see Bat/Plant Database). The checklists of plants for central French Guiana are available on the internet at the following web sites:
Once the species were determined, the pollen was extracted from specimens archived in the herbaria of the Institut de Recherche pour le Développement in Cayenne (CAY) and The New York Botanical Garden (NY). Pollen samples were mounted on aluminium stubs and examined and photographed with a Scanning Electron Microscope (SEM) at The New York Botanical Garden.
There is, however, a problem that complicates the identification of sputter-coated pollen. Even though the time of coating for pollen was standardized at two minutes, there is still considerable variation in the thickness of the coating, sometimes even on the same stub. This is especially true for pollen with relatively shallow ornamentation and in fact, the same species with a thin sputter coating may appear ornamented whereas a thick coating can result in a nearly smooth appearance.
this section, the pollen images are displayed according to ornamentation
type. For each ornamentation type, the pollen is presented
in a single table by increasing pollen size. Because of the
difficulty in interpreting the ornamentation type,
some species have been placed under several
types. For example, Mabea piriri is included under "reticulate
ornamentation" and under "perforate ornamentation."
undescribed not conforming to the other categories
Jones GD, V. M. Bryant Jr., M. H. Lieux,
S. D. Jones and P. D. Lingren, (1995) Pollen of the Southeastern
United States: With emphasis on melissopalynology and
entomopalynology. (American Association of Stratigraphic