pinnatifid and pinnatipartite – leaves with pinnate lobes that are not discrete, remaining sufficiently connected to each other that they are not separate leaflets.
paripinnate – pinnately-compound leaves in which leaflets are born in pairs along the rachis without a single terminal leaflet; also called "even-pinnate".
imparipinnate – pinnately-compound leaves in which there is a lone terminal leaflet rather than a terminal pair of leaflets; also called "odd-pinnate".
bipinnate – pinnately-compound leaves in which the leaflets are themselves pinnately-compound; also called "twice-pinnate".
tripinnate – pinnately-compound leaves in which the leaflets are themselves bipinnate; also called "thrice-pinnate".
tetrapinnate – pinnately-compound leaves in which the leaflets are themselves tripinnate.
Polystichum Montevidense Demystified: Molecular and Morphological Data Reveal a Cohesive, Widespread South American Species
Apr 01, 2013; ABSTRACTThe genus Polystichum presents striking variation in morphology and habitat preference in the Central Andes, the Serra do...