Broussonetia papyrifera MORACEAE

Sample information

Sample ID61-5-1b
Common namePaper mulberry


Pollen / Sporepollen
Morphologic typetriporate
Surface patternpsilate , scabrate
Equatorial sizemean 15
Polar sizemean 15
Equatorial shapecircular
Polar shapecircular
Grain arrangementdicot
Aperture count3
Pore morphologywith an operculum
Pore surface shapecircular
Wall thickness2.5
Columella visible?False
Morphology notesTriporate. Three small round pores with small operculum. Psilate with exine thickness 2.5um. Exine vaguely appears with scabrate pattern. May be tectate but columnellae are too small to see.

Ecology and Geography

Plant typeangiosperm
Floristic region(s)East Pacific Islands , Other outside Australasia , Maritime Southeast Asia
Vegetation communitiesopen forest
Habitat notesA deciduous tree growing to 15 meters. Fast growing, when introduced to non-native environments can quickly disrupt the native habitat as it chokes out native flora because of its very high consumption of water. Root system shallow and easily is blown down by winds. Skottsberg noted abundance in the crater of Rano Kao in 1904 but mostly immature. Gossen noted in March 2008 that the species was limited to the NW crater side as small shrubs up to 2m tall. (Also noted in the fossil record of KAO3).


CollectorCP, BS & BN 2918
Collection siteSW
Collection countryThailand
Collection date1971-08-12
Collection notesProcessed at the Pollen Laboratory, University of Minnesota, USA from the collecton of Ed Cushing, slide ref. G422.
Equatorial view
Polar view
Surface pattern
Wall view
Aperture view
Unique feature