Pungent. Terminating in a rigid sharp point; acrid.
Putamen. The shell of a nut; the bony part of a stone-fruit.
Quadrate. Nearly square in form.
Raceme. A simple inflorescence of pedicelled flowers upon a common more or less elongated axis.
Racemose. In racemes; or resembling a raceme.
Radiate. Spreading from or arranged around a common centre; bearing ray-flowers.
Radical. Belonging to or proceeding from the root or base of the stem near the ground.
Radicle. The portion of the embryo below the cotyledons, more properly called the caudicle.
Radiculose. Bearing rootlets.
Rameal. Belonging to a branch.