leaf_base_shape
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- Label: Leaf base shape
- Entity URI: https://w3id.org/APD/traits/trait_0011312
- Type: categorical
- Definition: A leaf shape trait [TO:0000492] which is the variation in shapes and forms of a leaf base [PO:0020040], especially considering the curvature [PATO:0001591] of the leaf margin [PO:0020128] near where it attaches to the petiole [PO:0020038].;The shape of the basal margin of a leaf.
- Additional comments: None
- Allowed values:
value description acute Two sides of the leaf meet at an angle that is less than 90°. attenuate Basal leaf margin abruptly incurved (concave), the two sides intersecting at an angle of less than 45°. auriculate Basal leaf margin with two rounded lobes. The leaf margin above the lobes is concave. The petiole attaches in the incised region between the lobes. cordate Basal leaf margin with two rounded lobes and the petiole attaches in the incised region between the lobes. The leaf margin above the lobes is rounded. cuneate Basal leaf margin approximately straight, the two sides intersecting at an angle between 45° to 90°. hastate Basal leaf margin with two lobes oriented outward, such that they are at approximately 90° relative to the central axis and the leaf margin is fairly flat at the base. oblique The leaf base is asymmetrical, with the midrib not lying in the middle of the leaf where it attaches to the petiole. obtuse Two sides of the leaf meet at an angle that is greater than 90°. rounded Basal leaf margin is rounded. sagittate Basal leaf margin with two lobes oriented downward, away from apex. The petiole attaches in the concave region between the lobes. sheathing The leaf base is broad and envelops the stem. truncate The basal leaf margin is cut straight across with the two sides intersecting at approximately 180°.
See the AusTraits Plant Dictionary (https://w3id.org/APD/traits/trait_0011312) for additional information about this trait.
Coverage
For this trait, AusTraits includes a total of 7,539 records. This includes:
- data for 6,088 species.
- data for 225 families.
- data from 11 datasets (see the portal Citations tab for a list of sources)