Polygonum acuminatum POLYGONACEAE

Sample information

Sample ID75-2-15a
Common nameTapertip smartweed


Pollen / Sporepollen
Morphologic typepantoporate
Surface patternreticulate
Equatorial sizemean 38.5
Polar sizemean 38.5
Equatorial shapecircular
Polar shapecircular
Grain arrangementdicot
Aperture countM
Pore morphologythickened
Pore surface shapecircular
Wall evennesseven
Columella visible?True
Morphology notesPeriporate. Pore aperture round and deep. Semi-tectate, per-reticulate. Columnellae taller under defined points that creates hexagon-like shape. Lumina spaced between muri which is contiguous.

Ecology and Geography

Plant typeangiosperm
Floristic region(s)East Pacific Islands , Other outside Australasia
Habit aquatic(s)floating attached, submerged, emergent
Vegetation communitiesherbland
Habitat notesFloating aquatic plant found in ponds, lakes, marshes and peat bogs. Common in the three large craters on Easter Island. Found in South and Central America, Mexico, Columbia, Uruguay but not in Chile and the Caribbean. This plant formed the floating mat on Rapa Nui (Easter Island) around 3500 years ago when the pollen was first identified in the fossil pollen record in the core KAO3 of Rano Kao (Gossen, 2010)


CollectorSchinini 27577
Collection siteDep. Ituzaingo
Collection countryArgentina
Collection date1993-01-20
Collection notesProcessed at the Pollen Laboratory, University of Minnesota, USA from the collecton of Ed Cushing, slide ref. B3643.
Equatorial view
Polar view
Surface pattern
Wall view
Aperture view
Unique feature