Bidens pilosa ASTERACEAE

Sample information

Sample ID286-12-1c
Common nameBlackjack, hary beggarticks


Pollen / Sporepollen
Morphologic typetricolporate
Surface patternechinate
Equatorial sizemean 22
Polar sizemean 22
Equatorial shapecircular
Polar shapecircular
Grain arrangementdicot
Aperture count3
Pore positionscorner
Pore morphologysunken pore
Pore surface shapecircular
Pore colpuses3
Wall thickness2.5
Exine typeintectate
Columella visible?True
Morphology notesTricolporate/Stephanocolporate. Shape: spheroidal approximately 22um. Round pore aperture. Exine structure very thick 2.5um. Sculpture echinate with spines 3-3.5um in length. Intectate on pollen slide, tectate with columnellae uncertain on SEM. Pore wider than colpi.

Ecology and Geography

Plant typeangiosperm
Floristic region(s)Northwest Pacific , Central Pacific , East Pacific Islands , Sub-tropical Pacific , New Zealand (north) , New Zealand and Islands (south)
Vegetation communitiesdisturbed/anthropogenic, herbland
Habitat notesWetlands, damp lowland fields and wasteland. Shade and dappled light inhibits germination. Bidens are "zoochorous" which means seeds are spread by animals. New Zealand, Africa, Bahamas, Brazil, Dominica, Domincan Republic, Ghana, Haiti, Java,Malaysia, mexico, New Guinea (Dani), Phillipines, S.Africa, Tanzania, Tonga, Upper Volta,Venezuela, W. Africa. Skottsberg collected from Easter Island in 1920. Gossen found Bidens in the fossil record of KAO3 Rano Kao, Rapa Nui (Easter Island) pre-human settlement. (Gossen,2010)


CollectorPurnomo, Ari Habsari, et al
Collection siteJawa Tengah, Kec. Kejajar, Telaga Warna
Collection countryIndonesia
Collection date1990-07-05
Collection notesProcessed at the Pollen Laboratory, University of Minnesota, USA from the collecton of Ed Cushing, slide ref. B2786. Also found in Diego Garcia, Indian Ocean.
Equatorial view
Polar view
Surface pattern
Wall view
Aperture view
Unique feature