Nerved, furnished with a nerve or nerves.
Ob-, used as a prefix meaning inversely.
Obtuse, blunt or rounded at the end.
Odd-pinnate, pinnate, with an odd leaflet at the end.
Palate, a protrusion at or near the throat of a two-lipped corolla.
Panicle, a loose, irregularly branching inflorescence.
Papilionaceous, butterfly-like; applied to the peculiar irregular flower common in Leguminosæ.
Papillæ, minute, thick, nipple-shaped, or somewhat elongated projections.
Parasitic, growing upon and deriving nourishment from another plant.