Cyperus polystachyos CYPERACEAE

Sample information

Sample ID12-6-11b
Common namebunchy sedge


Pollen / Sporepollen
Morphologic typeinaperturate
Surface patternscabrate
Equatorial sizemin 20.4, mean 23.1, max 25.3
Polar sizemin 20.5, mean 22.8, max 26.9
Equatorial shapecircular
Polar shapecircular
Grain arrangementmonocot
Aperture count2
Wall thickness1.64
Wall evennesseven
Columella visible?True
Dispersal formmonad
Morphology notesIrregular / retangular-cicular in shape. Finely reticulate to scabrate Wall range: 1.11-1.99. (Lacunae irregular and not defined apertures. Periporate, three pores not equatorial. Pore on polar side. Collumnellae under exine. Frustillate. Scabrate pattern. Ref slide #B1004 Belize. Gossen, 2010)

Ecology and Geography

Plant typeangiosperm
Floristic region(s)East Pacific Islands , Australia (tropical)
Habit aquatic(s)emergent
Ecology notesStephens, K. M. and Dowling, R. M. (2002) Wetland plants of Queensland: a field guide. CSIRO Publishing, Melbourne.
Habitat notesPerrenial Sedge Emergent rhizomatous plant. Occurs on the edges of bodies of water or in seasonally inundated areas (swamps, drainage lines) (Stephens and Dowling, 2002). Found in the fossil record of KAO3 in Rano Kao, Rapa Nui (Easter Island) Gossen, 2010)


CollectorAnne & Mark Myerscough
InstitutionCharles Darwin University ID by Ian Cowie and Bob Harwood (N.T. Herbarium)
ANU access code17065
Collection methodfloral reference
Herbarium sample?False
Collection sitePalmerston, Darwin, Northern Territory
Collection countryAustralia
Collection date2004-10-27
Collection notesPhotographed
Equatorial view
Polar view
Surface pattern
Wall view
Aperture view
Unique feature