leaf_arrangement

Label: Leaf arrangement
Entity URI: https://w3id.org/APD/traits/trait_0011411
Type: categorical
Definition: A leaf [PO:0025034] spatial pattern [PATO:0000060] trait which is the position [TO:0000541] and arrangement [NCIT:C61532] of leaves between stem nodes [PO:0020141], indicating how leaves align and cluster along the vegetative shoot system [PO:0025607].;Leaf arrangement across stem nodes, indicating the 3-dimensional arrangement of leaves along the length of the stem.
Additional comments: Leaf arrangement, as defined for this trait, indicates patterns of leaf arrangement across nodes, including both formal terms (decussate, distichous, spiral) as well as indications of leaf clustering due to variation in internode length. See the trait `leaf phyllotaxis` for terms describing leaf arrangement at a single node. See the trait `stem_growth_habit` for whole-plant leaf pattern terms, such as `rosette`.

Allowed values:

value	description
clustered	When leaves are in any type of cluster, where the type of cluster is not further specified. The leaves may be clustered toward the base of the plant (a rosette), toward the top of the plant, toward the end of branches, or in distinct tuft (fascicles), but more information is not provided.
clustered_basal	When leaves are clustered or crowded to the base of the stem, arranged in a rosette or other basal clustering. (Synonyms, rosette)
crowded	When internode length varies considerably along a stem, such that leaves appear crowded or tufted. (Synonyms, congested)
decussate	When sequential pairs of opposite leaves attach at right angles to the pair above or below.
distichous	When alternate or opposite leaves are arranged in two opposite rows.
fasciculate	A tight bundle or cluster of leaves attaches to the stem in a single location, generally due to the shortening of internodes. (Synonyms, tufted)
imbricate	When leaves lay tightly against the stem and are overlapping.
rosette	When leaves radiate from a central point at or near ground level.
scattered	When leaves are attached along the entire length of stem.
spiral	When alternate leaves are attached in a progressive spiral pattern along the stem.

See the AusTraits Plant Dictionary (https://w3id.org/APD/traits/trait_0011411) for additional information about this trait.

Coverage

For this trait, AusTraits includes a total of 3,630 records. This includes: