Genus Alnus
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| notation | BetuAln | ||||||
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| definition | Distribution: A genus of 30 species in temperate regions of the northern hemisphere
and the Andes in South America; the Flora of Australia publication listed one species
naturalised in Australia, the Australian Plant Census lists two species. Description: This genus is a group of trees or shrubs. For more details regarding the description of species within this genus please see: https://profiles.ala.org.au/opus/foa/profile/Alnus Pollen Morphology: The pollen grains from this family are pentagonal or quadrangular in polar view or elliptical when viewed from the side. The size of these are between 20-23um on the polar axis and 24-26um on the equatorial axis. These grains have 4-5 pores that protrude around the grain and are surrounded by annular thickenings that have a distinct semi-circular aspis underneath. The surface texture of these grains are faintly grainy (scabrate) and they have a finely granulate plasma. |
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| creator | NEII_Programme original | ||||||