Ferruginous

Color of iron-rust.

Fetid

Ill-smelling.

Fibrillose

With fibres or fibre-like organs.

Filament

The stalk of an anther; the two forming the stamen.

Filamentous

Composed of thread-like structures; thread-like.

Filiform

Thread-like.

Fimbriate

With fringed edges.

Fimbrillate

Minutely fringed.

Fistular

Hollow and cylindric.

Flabellate

Fan-shaped, or arranged like the sticks of a fan.

Flaccid

Lax; weak.

Flexuous

Alternately bent in different directions.

Floccose

With loose tufts of wool-like hairs.

Foliaceous

Similar to leaves.

Foliolate

With separate leaflets.

Follicle

A simple fruit dehiscent along one suture.

Follicular

Similar to a follicle.

Foveate

Foveolate. More or less pitted.

Free

Separate from other organs; not adnate.

Frond

The leaves of ferns.

Frutescent

Fruticose. More or less shrub-like.

Fugacious

Falling soon after development.

Fugitive

Plants not native, but occurring here and there, without direct evidence of becoming established.

Funiculus

The stalk of an ovule or seed.

Fusiform

Spindle-shaped.

Galea

A hood-like part of a perianth or corolla.

Galeate

With a galea.

Gametophyte

The sexual generation of plants.

Gamopetalous

With petals more or less united.

Gemma

A bud-like propagative organ.

Gibbous

Enlarged or swollen on one side.

Glabrate

Nearly without hairs.

Glabrous

Devoid of hairs.

Gladiate

Like a sword-blade.

Gland

A secreting cell, or group of cells.

Glandular

With glands, or gland-like.

Glaucous

Covered with a fine bluish or white bloom; bluish-hoary.

Globose

Spherical or nearly so.

Glomerate

In a compact cluster.

Glomerule

A dense capitate cyme.

Glumaceous

Resembling glumes.

Glume

The scaly bracts of the spikelets of grasses and sedges.

Grainilose

Composed of grains.

Gregarious

Growing in groups or colonies.

Gynaecandrous

In Carex, a spike with upper flowers pistillate and lower staminate.

Gynobase

A prolongation or enlargement of the receptacle, supporting the ovary.

Habit

General aspect.

Habitat

A plant's natural place of growth.

Hastate

Halberd-shaped; like sagittate, but with the basal lobes diverging.

Haustoria

The specialized roots of parasites.

Head

A dense round cluster of sessile or nearly sessile flowers.

Herbaceous

Leaf-like in texture and color; pertaining to an herb.

Hilum

The scar or area of attachment of a seed or ovule.

Hirsute

With rather coarse stiff hairs.

Hispid

With bristly stiff hairs.

Hispidulous

Diminutive of hispid.

Hyaline

Thin and translucent.

Hypocotyl

The rudimentary stem of the embryo; also termed radicle.

Hypogynium

Organ supporting the ovary in some sedges.

Hypogynous

Borne at the base of the ovary, or below.

Hyponym

A generic or specific name untypi-fied.

Imbricated

Overlapping.

Imperfect

Flowers with either stamens or pistils, not with both.

Incised

Cut into sharp lobes.

Included

Not projecting beyond surrounding parts.

Incumbent

With the back against the hypocotyl.

Indehiscent

Not opening.

Indusium

The membrane covering a sorus.

Inequilateral

Unequal sided.

Inferior

Relating to an organ which arises or is situated below another.

Inflexed

Abruptly bent inward.

Inflorescence

The flowering part of plants; its mode of arrangement.

Integument

A coat or protecting layer.

Internode

Portion of a stem or branch between two successive nodes.

Introrse

Facing inward.

Involuccl

A secondary involucre.

Invollucellate

With a secondary involucre.

Involucrate

With an involucre, or like one.

Involucre

A whorl of bracts subtending a flower or flower-cluster.

Involute

Rolled inwardly.

Irregular

A flower in which one or more of the organs of the same series are unlike.

Labiate

Provided with a lip-like organ.

Laciniate

Cut into narrow lobes or segments.

Lanceolate

Considerably longer than broad, tapering upward from the middle or below; lance-shaped.

Latex

The milky sap of certain plants.

Leaflet

One of the divisions of a compound leaf.

Legume

A simple dry fruit dehiscent along both sutures.

Lenticular

Lens-shaped.

Ligulate

Provided with or resembling a ligule.

Ligule

A strap-shaped organ, as the rays in Compositae.

Limb

The expanded part of a petal, sepal, or gamopetalous corolla.

Linear

Elongated ancTnaTrow with sides nearly parallel.

Lineolate

With fine or obscure lines.

Lobed

Divided to about the middle.

Loment

A jointed legume, usually constricted between the seeds.

Loculicidal

Applied to capsules which split longitudinally into their cavities.

Lodicules

Minute hyaline scales subtending the flower in grasses.

Lunate

Crescent-shaped.

Lyrate

Pinnatifid, with the terminal lobe or segment considerably larger than the others.

Macrosporange

Sporange containing macro-spores.