Table IV.

Tabulation of differentiating pollen features within Elytrantheae clade.

Genus	Clade	Apertures	Size, shapea	Outline in equatorial view	Equatorial apices	Margo	Polar triangular protrusions of margo	Polar thickening of the endexine (LM)	Sculpturing of mesocolpium (SEM)
Alepis	A	Syn(3)colpate	Medium, distinctly oblate	Elliptic	Broadly rounded	Striate	Prominent	Hexagonal	Rugulate
Peraxilla	A	Syn(3)colpate	Medium, (distinctly) oblate	Elliptic	Broadly rounded	Partly psilate, partly striate/rugulate	Prominent	Hexagonal	Nanoechinate
Macrosolen	B	Syn(3)colpate	Medium, distinctly oblate	Elliptic	Broadly rounded	Mostly psilate, indistinctly striate/rugulate	Indistinct	None	Micro-verrucate to -echinate, perforate
Amylotheca	B	Demisyn(3)colpate	Small, oblate	Rhombic	Rounded	Psilate	Present	Present	Nano-echinate
Loxanthera	B	Syn(3)colpate	Medium to large, oblate	Elliptic	Broadly rounded	Partly psilate, partly striate	Prominent	Hexagonal	(Micro)echinate

Note: ^a Size: small, < 25 µm; medium, 25–50 µm; shape: oblate, less than two-times wider than high; distinctly oblate, more than two-times wider than high.