flower_pollen_aperture_shape

Label: Pollen grain aperture shape
Entity URI: https://w3id.org/APD/traits/trait_0012471
Type: categorical
Definition: A floral organ morphology trait [TO:0000862] which is the shape [PATO:0000052], structure [PATO:0000141], and position [PATO:0000140] of the pollen grain [PO:0025281] apertures [GO:0062074].;Pollen grains are often described according to the shape, structure, and position of their apertures. This trait describes the main shape of the many described aperture types.
Additional comments: Aperture terminology is partly determined by the position of the aperture on the pollen grain (either at the pole or at the equator) and pollen grain polarity, in turn, is determined by the spatial orientation of the microspore in the meiotic tetrad. Definition and trait values derived from Schoenenberger et al. (2020) for their character '5002. Aperture shape (D1)''

Allowed values:

value	description
absent	Pollen that lacks an aperture.
colporus	Pollen aperture shape that combines the groove of colpate and the pore of porate apertures.
colpus	Pollen aperture shape is elongate and grooved and may be positioned globally or equatorially.
pore	Pollen aperture shape is round and pore-like and may be positioned globally or equatorially.
ring_like	Aperture that completely encircles the pollen.
spiraperturate	Pollen grain with one or more spiral apertures.
sulcus	Pollen aperture shape is elongate and grooved and positioned at the pole.
syncolpus	Pollen grain with two or more simple (or compound) colpi, the ends of which join at the pole.
ulcus	Pollen aperture shape is round and pore-like and positioned at the pole.

See the AusTraits Plant Dictionary (https://w3id.org/APD/traits/trait_0012471) for additional information about this trait.

Coverage

For this trait, AusTraits includes a total of 297 records. This includes: