In addition to most of the terms employed in describing the plants in this work, we include the principal specific names, with their significations, for the use of those who have not studied Latin. Compound words have been omitted in cases where the meaning can be ascertained by reference to their component parts. Adjectives and nouns of the same derivation, are not always both given, as one is usually sufficient to explain the other. It is almost unnecessary to observe, that the differences in the termination of the same word distinguish the gender, in agreement with that of the generic names.

a, as a prefix, denotes absence of an organ or organs, e.g. apetalous, acau-lescent, acotyledonous.

Abnormal

Differing from the usual growth or structure.

Acerosus

Needle-shaped.

Achene

A dry 1-seeded indehiscent fruit.

Aculeatus

Armed with prickles.

Acuminate

Having an elongated tapering point.

Acute

Sharp-pointed.

Adelphia

A brotherhood. Stamens are monadelphous, diadelphous, or polyadelphous, according as they are arranged in one, two, or several fascicles.

Adnate

One organ consolidated or united to another, as an ovary adnate to the calyx-tube.

Aestivalis

Produced in Summer.

Aestivation

The disposition of the parts of a flower before expansion.

Aggregate

Several bodies or organs in close juxtaposition.

Alate

Winged, as the stem or seed.

Albas

White.

Albumen

The substance found in many seeds with the embryo, sometimes entirely wanting, sometimes constituting the greater bulk of the seed.

Albuminous

Furnished with albumen.

Alburnum

The sap-wood or outer rings of exogenous trees.

Alternate

One above the other in different lines, as the leaves of many plants, or between other organs, as the stamens in respect to petals, etc.

Amentum

A catkin. Amentaceous, plants having the flowers in catkins, like the Willow and Hazel.

Andmcium

The male organs, collec-tively.

Angios

Covered. Angiospermous, having the seed enclosed in an ovary.

Annual

Flowering the first season, and of one year or season's duration.

Anther

That part of the male organ containing the pollen or impregnating substance.

Apeialous

Destitute of petals,

Apiculate

Terminating in a short sharp point.

Apocarpous

Carpels separate from each other.

Arbor

A tree, a plant with a distinct stem and branches.

Arenarius

Growing in sandy soil.

Argenteus

Silvery.

Aristatus

Awned or bearded.

Articulatus

Jointed.

Arvensis

Growing in cultivated grounds.

Asper

Furnished with harsh hairs.

Ater

Deep black.

Atratus

Becoming black.

Attenuatus

Tapering, slender.

Auratus

Golden yellow.

Awn

A stiff or flexible bristle.

Auriculatus

Provided with ear-like lobes or processes.

Axis

The stem and root of a plant.

Axil

The angle formed between the leaf and stem, or between other organs.

Axile

Proceeding from the centre or axis.

Axillary

Produced in the axils of the leaves or other organs.

Azureus

Sky-blue.