Acute

Terminating in a sharp point.

Adventive

Not perfectly naturalized.

Alternate

Not opposite, but singly at different heights on the stem.

Annual

Of only one year's duration.

Anther

That part of a stamen containing pollen.

Appressed

Lying close and flat against.

Axil

Angle formed by a leaf and stem.

Basal

Leaves springing from the stem at the ground.

Biennial

Of two years duration.

Bilabiate

Two-lipped.

Bract

A small, modified leaf usually at the base of a flower stem.

Bulbous

Having underground leaf-buds with fleshy scales or coats.

Calyx

The outer perianth, or "cup" of a flower.

Campanulate

Bell-shaped.

Cleistogamous

Fertilized in the bud, without the opening of the flower.

Composite

A compound flower head containing many tubular or ray florets seated in a bracted, or scaly cup or involucre.(As daisy, thistle, etc.)

Compound

Composed of several similar parts, or a leaf made up of several leaflets.

Cordate

Heart-shaped with the point upwards.

Corm

The enlarged, solid bulb-like base of a stem.

Corolla

The inner perianth of a flower, usually of petals as opposed to sepals of the calyx.

Corymb

A flat topped cluster of flowers.

Cross-fertilization

The pollen of one flower comin into contact with the stigma of another.

Creeping

A stem running along the ground and root ing at intervals.

Deciduous

Falling off; not evergreen.

Dentate

Toothed.

Disc Flowers

Tubular florets found in the center of composite flowers.

Entire

Smooth-edged; no teeth or divisions.

Evergreen

Having green leaves at all times.

Fertile

Capable of producing fruit.

Fertilization

The quickening of the seed in the flow er ovaries by pollen from the anthers.

Filament

The thread-like part of a stamen.

Floret

A small tubular flower, usually one of cluster.

Glabrous

Smooth; not rough or hairy.

Glaucus

Covered wtih a whitish bloom.

Hirsute

Covered wtih rather coarse hairs.

Imperfect

Flowers with either stamens or pisti wanting.

Introduced

Brought intentionally from other re gions.

Involucre

A cup-shaped cluster of bracts surround ing a head or flower cluster.

Irregular

With parts unequal in size or shape.

Lanceolate or lance-shaped

Much longer than wide pointed at the end and tapering at the base.

Leaflet

A single division of a compound leaf.

Linear

Long, narrow, with parallel margins.

Lip

Either division of a two-parted corolla; the broadened petal of an orchid.

Lobe

A rounded division of a flower or leaf.

Midrib

The central vein of a leaf.

Naturalized

Floral immigrants that have become firmly established.

Nerve

A single, unbranched vein or rib.

Olong

Longer than broad, with nearly parallel sides.

Ovary

Part of the pistil containing seeds.

Ovate

Egg-shaped, broad end downwards. Palate - A rounded projection of the lower lip closing the throat.

Palmate

Radially lobed; spreading like the fingers of the hand.

Parasitic

Stealing nourishment from other plants.

Pedicel

The stem of a single flower.

Peduncle

A flower-stalk supporting either a single flower or a cluster.

Perennial

One that lasts year after year.

Perfect Flower

'One having both stamens and pistil.

Perfoliate

Leaf pierced by the stem.

Prianth

The calyx and corolla of a flower.

Petal

A single division of the corolla.

Petiole

The stalk of a leaf.

Pinnate

Compound, with leaflets arranged on each side of a common petiole.

Pistil

The ovary, style and stigma of a flower.

Pistillate

Female flowers; pistils but no stamens.

Pollen

The life-producing grains in the anthers.

Raceme

Pediceled flowers growing along a more or less elongated flower stem.

Radiate

Growing from or around a common center.

Ray

The marginal flowers surrounding a disc.

Rib

A prominent vein of a leaf.

Root

That part of a plant underground.

Scape

A leafless flower-stem rising from the ground.

Sepal

A division of the calyx.

Serrate

Having sharp teeth pointing forward.

Sessile

Without rootstalk, pedicel or petiole.

Simple

Not compounded or branched.

Spadix

A thick, fleshy spike usually in a spathe.

Spathe

A large bract enclosing flowers.

Spatulate

Rounded at the end and gradually narrowing at the base.

Spike

Sessile flowers on an elongated stem.

Spur

A nectar-bearing, hollow extension of some portion of a blossom.

Stamen

One of the pollen-bearing organs.

Standard

The upper, dilated petal of a pea-like flower.

Stem

The main ascending axis of a plant.

Sterile

Unproductive.

Stigma

That part of a pistil through which pollen effects an entrance.

Stipsule

An appendage, or bract, at base of petiole.

Style

Connection between the stigma and ovary.

Tuber

A short, thick, underground root having numerous buds or eyes.

Tufted

Growing in clumps or clusters.

Umbel

A flower cluster with pedicels all from a common center.

Veins

Thread-like branching nerves.

Whorl

Arrangement in a circle about stem.