The leaflet of a pinna; a secondary leaflet of a pinnately decompound leaf.
(also pinule) - n. (NL. pinnula, fr. L., small feather, small fin) a secondary pinna, one of the ultimate divisions of a bipinnate or twice-pinnate leaf.
division of a usually pinnately divided leaf
the second order of segments of a compound or dissected leaf leaf or frond
The smallest individual leaflet of a bi-, tre-, or quadripinnate leaf. See also pinnate.
a leaflet, i.e. ultimate segments of the lamina.
a secondary division of a leaf or frond.
One of the divisions of a pinnate leaflet in a bipinnate leaf.
A segment of a blade produced by two levels of division. If a blade is once pinnate, the segments formed are pinna. Each pinna can be further divided into segments called pinnules.
A secondary division of a fern leaf.
Diminutive of pinnae; an ultimate leaflet of a leaf that is pinnately two or more times compound.
one of a number of second-order leaflets in a compound leaf, such as is typical of many ferns, where the pinnae are themselves divided into leaflets
A secondary pinna, one of the ultimate divisions of a bipinnate or twice-pinnate leaf. From the Latin, pinnula, "small feather, small fin."