| Name | Structure/ Category | Description |
|---|---|---|
| Palmate | (2) [Leaf venation, Leaflet venation] {form} | With three or more primary veins arising from a common point at or near the base of the leaf or leaflet blade. |
| Palmately lobed | [Leaflet, Leaves] {lobing form} | With three or more main segments or lobes essentially arising from a common point near the base of the leaf or leaflet blade; lobed in a hand-like pattern. |
| Pandurate | [Leaflets, Leaves] {shape} | Basically inversely egg-shaped (obovate), but with two opposite rounded sinuses in the lower half and two small basal lobes; fiddle-shaped. |
| Panicle | [Inflorescences] {type} | A branched raceme, the main axis either determinate or indeterminate, and the lateral branches racemose; more loosely, a much-branched inflorescence of various types. |
| Pappus | A ring or pair of hairs, bristles, awns or scales attached at the top of the ovary just beneath the petals, persisting in fruit and often aiding in dispersal by wind or animals, especially in the Asteraceae. | |
| Parallel | [Leaf venation, Leaflet venation] {form} | With two or more primary veins that run more or less parallel from the base to the tip of the leaf or leaflet blade. |
| Parasitic | [Plants] {nutrition} | Living in or on an organism of a different species and deriving nutrients from it. |
| Parietal | [Placentation] {type} | Attachment of ovules on the inner wall, or intrusions of the wall, of a compound ovary with a single inner compartment (unilocular). |
| Pectinate | [Leaves] {habit} | Arranged like the teeth of a comb, the leaves slender and more or less perpendicular to the stem; comb-like. |
| Pedicel | The stalk of a individual flower, either that of a solitary flower or of single flowers in a multi-flower inflorescence. |
