is.

_Pollicaris_, Latin for an inch long.

_Pollination_, the application of pollen to the stigma, 114.

_Poly-_, in compound words of Greek origin, same as _multi-_ in those of
Latin origin viz. many, as

_Polyadelphous_, stamens united by their filaments into several bundles,
100.

_Polyandrous_, with numerous stamens (inserted on the receptacle), 100.

_Polycarpic_, term used by DeCandolle in the sense of perennial.

_Polycotyledonous_, having many (more than two) cotyledons, as Pines,
23.

_Polygamous_, having some perfect and some unisexual flowers, 85.

_Polygonal_, many-angled.

_Polygynous_, with many pistils or styles, 105.

_Polymerous_, formed of many parts of each set.

_Polymorphous_, of several or varying forms.

_Polypetalous_, when the petals are distinct or separate (whether few or
many), 89.

_Polyphyllous_, many-leaved; formed of several distinct pieces.

_Polysepalous_, same as the last when applied to the calyx, 89.

_Polyspermous_, many-seeded.

_Pome_, the apple, pear, and similar fleshy fruits, 119.

_Pomiferous_, pome-bearing.

_Porrect_, outstretched.

_Posterior_ side or portion of a flower (when axillary) is that toward
the axis, 96.

_Pouch_, the silicle or short pod, as of Shepherd's Purse, 123.

_Praecocious_ (Latin, _praecox_), unusually early in development.

_Praefloration_, same as _aestivation_, 97.

_Praefoliation_, same as _vernation_, 71.

_Praemorse_, ending abruptly, as if bitten off.

_Pratensis_, Latin for growing in meadows.

_Prickles_, sharp elevations of the bark, coming off with it, as of the
Rose.

_Prickly_, bearing prickles, or sharp projections like them.

_Primine_, the outer coat of the covering of the ovule, 110.

_Primordial_, earliest formed; primordial leaves are the first after the
cotyledons.

_Prismatic_, prism-shaped; having three or more angles bounding flat
sides.

_Procerous_, tall, or tall and slim.

_Process_, any projection from the surface or edge of a body.

_Procumbent_, trailing on the ground, 39.

_Procurrent_, running through but not projecting.

_Produced_, extended or projecting; the upper sepal of a Larkspur is
_produced_ above into a spur, 87.

_Proliferous_ (literally, bearing offspring), where a new branch rises
from an older one, or one head or cluster of flowers out of another.

_Propaculum_ or _Propagulum_, a shoot for propagation.

_Prosenchyma_, a tissue of wood-cells.

_Prostrate_,