Pollen and Spore Atlas

Malvastrum americanum MALVACEAE

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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 Polar Size Equatorial Shape(s) Grain Arrangement(s)
min max mean min max mean
pollen pantocolporate,
echinate 39.5 48.0 44.0 39.5 48.0 44.0 circular monad

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Wall Thickness 3.0
Pore Shape(s) circular
Pore Size 3-5
Morphology Notes pantoporate, some grains pantocolporate. Subspheroidal. Colpus visible in some grains. Pores circular, 3-5 u wide. 44 (39-48). Exine 3, sexine gt nexine; with spines 2 u high, 3 u at base.

Ecology and Geography

Plant Type Cotyledon Type Floristic Region(s)
angiosperm dicot Australia (arid)

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Herbarium Link:


Collector ANU Access Code
Singh ANU 17582 10424

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Collection Site Lake Cobham, 100 km south of Tibooburra, New South Wales
Collection Country Australia
Collection Notes Kimberley Region, Western Australian Pollen Flora