112 
GLOSSARY. 
Pungent. 
Putameu. 
Quadrate. 
Raceme. 
Radical. 
Radicle. 
Proterogynous. Having the stigma ripe for the pollen before the maturity 
of the anthers of the flower. 
Pseudo-costate. False-ribbed, as when a marginal vein or rib is formed 
by the confluence of the true veins. 
Pteridophytes. Ferns and their allies. 
Puberulent. Minutely pubescent. 
Pubescent. Covered with short, soft or downy hairs. 
Punctate. Dotted with depressions or with translucent internal glands 
or colored dots. 
Terminating in a rigid sharp point; acrid to the taste. 
The shell of a nut; the bony part of a stone fruit. 
Square in outline. 
A simple inflorescence of pedicelled flowers upon a more or less 
elongated axis. 
Racemose. In raceme, or resembling a raceme. 
Radiate. Spreading from or arranged around a common centre; bearing 
ray-flowers. 
Belonging to or proceeding from the root or base of the stem 
near the ground. 
The portion of the embryft below the cotyledons, more properly 
called the caudicle. 
Radiculose. Bearing rootlets. 
Rameal. Belonging to the branch. 
Ramification. Branching. 
Ray. The branch of an umbel; the marginal flowers of an inflorescence 
when distinct from the disk. 
Receptacle. The more or less expanded or produced portion of an axis 
which bears the organs of a flower (the torus) or the collected 
flowers of a head. 
Recurved. Curved downward or backward. 
Reflexed. Abruptly bent or turned downward. 
Regular. Uniform in shape and structure. 
Reniform. Kidney-shaped. 
Repand. With a slightly uneven and somewhat sinuate margin. 
Resiniferous. Producing resin. 
Reticulate. In the form of a net-work; net-veined. 
Retrorse. Directed back or downward. 
Retuse. With a shallow notch at a rounded apex. 
Revolute. Rolled backward from the margin or apex. 
Rachis. The axis of a spike or compound leaf. 
Rhaplie. The ridge or adnate funicle which in an anatropous ovule con- 
nects the two ends. 
Any prostrate or subterranean stem, usually rooting at the 
nodes and becoming erect at the apex ; very variable in char- 
acter, and including morphologically the tuber, conn, bulb. 
Rhizome. 
