Pollen and Spore Atlas

Heteropogon contortus POACEAE

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equatorial view
equatorial view
polar view
polar view
surface pattern
surface pattern
wall view
wall view
aperture view
aperture view
unique feature
unique feature


Pollen / Spore Morphologic Type(s) Surface Pattern(s) Equatorial Size Equatorial Shape(s) Grain Arrangement(s)
min max mean
pollen monoporate reticulate 42.2 53.7 49.0 circular monad

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Aperture Count(s) 1
Wall Evenness(es) even
Wall Thickness 2.37
Pore Shape(s) circular (with annulus)
Pore Size 4.17
Morphology Notes Pore (3.42-5.07) and with annulus 10.57um (9.64-11.43). Wall thickness (1.87-2.70). Faint reticulation,

Ecology and Geography

Plant Type Cotyledon Type Floristic Region(s)
angiosperm monocot Australia (tropical),
Australia (east coast)

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Vegetation Community(-ties) woodland, open forest
Common Name black spear grass
Ecology Notes Waters, C., Whalley, W. and Huxtable, C. (2001) Field crops and pastures. New South Wales Department of Primary Industries (Agriculture), Sydney.
Habitat Notes Typical species of Australian tropical and subtropical tall grass vegetation. Understorey to eucalypt woodland and open forest. Most abundant under average annual rainfall of 600 - 1000mm, with marked wet/dry seasons (Waters et. al., 2001).
Herbarium Link:


Collector Institution ANU Access Code
Fay Johnston & David Bowman Charles Darwin University 17343

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Collection Site Casuarina Coastal Reserve, Darwin, Northern Territory
Collection Country Australia
Collection Date 2004-05-15
Institution Link
Collection Method floral reference
Herbarium Sample false
Herbarium Notes Identified by Ian Cowie, N.T. Herbarium
Preparation Method Sample preparation performed at ANU. Sample sent to ANU 21/06/2004
Slide Medium glycerol
Microscopic Instrument Zeiss Axio Imager M1
Collection Notes Kimberley Region, Western Australian Pollen Flora