Acaulescent

With stem subterranean, or nearly so.

Accumbent

Cotyledons with margins folded against the hypocotyl.

Achene

A dry one-seeded indehiscent fruit with the pericarp tightly fitting around the seed.

Acicular

Needle-shaped.

Acuminate

Gradually tapering to the apex.

Acute

Sharp pointed

Adnate

An organ adhering to a contiguous differing one; an anther attached longitudinally to the end of the filament.

Adventive

Not indigenous, but apparently becoming naturalized.

Albumen

See Endosperm.

Alliaceous

Onion-like, in aspect or odor.

Alternate

Not opposite; with a single leaf at each node.

Alveolate

Like honeycomb; closely pitted.

Anient

A spike of imperfect flowers subtended by scarious bracts, as in the willows.

Amphibious

At times inhabiting the water.

Amphitropous

Term applied to the partly inverted ovule.

Aniplericaul

Clasping the stem, or other axis.

Anastomosing

Connecting so as to form a well-defined network.

Anatropous

Applied to an inverted ovule with the micropyle very near the hilum.

Androgynous

Flower clusters having stami-nate and pistillate flowers; in Carex, a spike with upper flowers staminate and lower pistillate.

Angiospermous

Pertaining to the Angio-spermae; bearing seeds within a pericarp.

Anther

The part of the stamen which contains the pollen.

Antherid

The male organ of reproduction in Pteridophyta and Bryophyta.

An thesis

Period of flowering.

Apetalous

Without a corolla.

Aphyllopodic

In Carex, with lower leaves bladeless or with rudimentary leaves only.

Apical

At the top, or referring to the top.

Apiculate

With a minute pointed tip.

Appressed

Lying against another organ.

Arborescent

Tree-like, in size or shape.

Archegone

The female reproductive organ in Pteridophyta and Bryophyta.

Areolate

Reticulated.

Areolation

The system of meshes in a network of veins.

Areole

A mesh in a network of veins.

Aril

A fleshy organ growing about the hilum.

Arillate

Provided with an aril.

Aristate

Tipped by an awn or bristle.

Aristulate

Diminutive of aristate.

Ascending

Growing obliquely upward, or up-curved.

Asexual

Without sex.

Assurgent

See Ascending.

Auricled

(Auriculaie) with basal ear-like lobes.

Awn

A slender bristle-like organ.

Axil

The point on a stem immediately above the base of a leaf.

Axile

In the axis of an organ.

Axillary

Borne at, or pertaining to an axil.

Baccate

Berry-like.

Barbellate

Furnished with minute barbs.

Basifixed

Attached by the base.

Berry

A fruit with pericarp wholly pulpy

Bilabiate

With two lips.

Bipinnate

Twice pinnate.

Bipinnatifid

Twice pinnatifid.

Blade

The flat expanded part of a leaf.

Bract

A leaf, usually small, subtending a flower or flower-cluster, or a sporange.

Bracteate

With bracts.

Bracteolate

Having bractlets.

Bractlet

A secondary bract, borne on a pedicel, or immediately beneath a flower; sometimes applied to minute bracts.

Bulb

A bud with fleshy scales, usually subterranean.

Bulblet

A small bulb, especially those borne on leaves, or in their axils.

Bulbous

Similar to a bulb; bearing bulbs.

Caducous

Falling away very soon after development.

Caespitose

Growing in tufts.

Callosity

A small, hard protuberance.

Callus

An extension of the inner scale of a grass spikelet; a protuberance.

Calyx

The outer of two series of floral leaves.

Campanulate

Bell-shaped.

Campylotropous

Term applied to the curved ovule.

Cancellate

Reticulated, with the meshes sunken.

Canescent

With gray or hoary fine pubescence.

Canaliculate

Channelled; longitudinally grooved.

Capitate

Arranged in a head; knob-like.

Capsular

Pertaining to or like a capsule.

Capsule

A dry fruit of two carpels or more, usually dehiscent by valves or teeth.

Carinate

Keeled; with a longitudinal ridge.

Carpel

The modified leaf forming the ovary, or a part of a compound ovary.

Caruncle

An appendage to a seed at the hilum.

Carunculate

With a caruncle.

Caryopsis

The grain; fruit of grasses, with a thin pericarp adherent to the seed.

Caudate

With a slender tail-like appendage.

Caudex

The persistent base of perennial herbs, usually only the part above ground.

Caudicle

Stalk of a pollen-mass in the Orchid and Milkweed Families.

Cauline

Pertaining to the stem.

Cell

A cavity of an anther or ovary.

Chaff

Thin dry scales.

Chalaza

The base of the ovule.

Chartaceous

Papery in texture.

Chlorophyll

Green coloring matter of plants.

Chlorophyllous

Containing chlorophyll.

Ciliate

Provided with marginal hairs.

Ciliolate

Minutely ciliate.

Cilium

A hair.

Cinereous

Ashy; ash-colored.

Circinnate

Coiled downward from the apex.

Circumscissile

Transversely dehiscent, the top falling away as a lid.

Clavate

Club-shaped.

Cleistogamous

Flowers which do not open, but are pollinated from their own anthers.

Cleft