Genus Alnus

dcterms created equal to or less than 2022-06-16T01:42:20.272Zequal to or more than 2022-06-16T01:42:20.272Z
dcterms modified equal to or less than 2022-06-16T02:12:15.279Zequal to or more than 2022-06-16T02:12:15.279Z
notation BetuAln
broader original
Genus-Alnus_2 original
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:

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.
Resource original
Concept original
contributor NEII_Programme original
creator NEII_Programme original
in scheme TEST-AusPollen-Aerobiology-Collaboration-Network-Species-Classification original