Defective or barren.
A small, dry, hard, one-celled, and one-seeded fruit, with tightly fitting and valveless covering.
Not opposite; arranged singly at different heights on the axis.
A plant which matures fruit in one year. Anther. The part of a stamen which contains the pollen.
Lying flatly and close against.
Curving upward or rising obliquely.
An ear-shaped lobe or appendage.
Tapering from the base to a rigid point.
The angle formed by the junction of a leaf or branch with the stem.
Situated in an axil.
Tipped with sharp, rigid, and reflexed points.
Having a tapering, prolonged tip.
A simple fruit which is wholly pulpy or fleshy except the outer skin.
Of two years' duration.
The flat, expanded part of a leaf.
A more or less modified leaf subtending a flower, or a flower cluster, or sometimes borne on a stem.
An underground leaf-bud with fleshy scales or coats.
The outer floral envelope.
Hoary with fine gray hairs.
Shaped like a head.
A dry fruit of two or more carpels, opening usually by valves or teeth.
A single ovary, or one part of a compound ovary.
A cavity of an ovary or of an anther.
Fringed with marginal hairs.
A tuft of hairs at the end of some seeds.
Bearing tufted hairs at the apex.
Composed of similar parts forming one whole.
Similar structures more or less united.
The swollen, fleshy, and solid base of a stem.
The inner floral leaves or petals, which may be distinct or more or less united.
A convex or flat-topped flower cluster with pedicels or rays arising from different points on the axis, and with the progression of bloom from the margin inward.
Scalloped; having rounded teeth.
The stem peculiar to grasses and sedges.
A convex or flattened flower cluster of which the central flowers first unfold, the progression of bloom being toward the margin.
Not persistent; falling away at the end of the growing period.
Declining but with the end ascending.
Extending down the stem below the insertion.
Turned abruptly downward.
Opening regularly by valves, slits, or teeth.
Widely or loosely spreading.
Bearing staminate or male flowers on one plant, and fertile or pistillate flowers on another plant.
In Composites, the tubular flowers of the head as distinct from the rays.
A fleshy or pulpy fruit having an inner portion of the pericarp hard and bone-like.
Without divisions, lobes, or teeth.
Projecting beyond an envelope, as the stamens from a corolla.
A close bundle or cluster.
Bearing fruit or seed.
The part of a stamen which supports the anther; any thread-like body.
A small flower, usually one of a head or a dense cluster.
A fruit consisting of a single carpel, opening by the ventral or inner suture.
The seed-bearing product of any plant, simple, compound, or aggregated, of whatever form.
Smooth; without hairs.
A secreting cell or structure.
Covered with a white or bluish-white bloom.
One of the two outer chaffy bracts at the base of the spikelet in the grasses.
A plant's natural place of growth.
Like an arrow-head but with the basal lobes pointing outward instead of backward.
A plant with no persistent woody stem above the ground.
Bearing rather coarse, stiff hairs.
Set with rigid or bristly hairs.
Not protruding from the surrounding envelope, as the stamens from the corolla.
Persistently closed; a fruit covering without an opening.
Native to the region of growth.
Attached to or growing out of.
The portion of a stem between two nodes or joints.
Brought from another region to the place of growth.
A circle or whorl of bracts subtending a flower cluster, or a head, or a single flower.
Showing inequality in size and form of similar parts.
Centrally ridged along the back.
A single division of a compound leaf.
The lower of the two bracts inclosing the flower in the grasses.
The thin projection at the top of the sheath in grasses; the ray flowers in Composites.
Long and narrow with sides nearly parallel.
Any segment of an organ, especially if rounded.
Pinnatifid, with the terminal lobe much larger than the others.
Thin, rather soft and more or less translucent.
Bearing stamens and pistils in different flowers but on the same plant.
Not native to the region of growth.
An organ or cavity where nectar is secreted.
An unbranched vein or a slender rib.
Without stamens or pistils.
The part of a stem or branch at which a leaf or leaves are borne.
Longer than broad with sides nearly parallel.
Blunt or rounded at apex.
The part of a pistil which contains the seeds.
Having an egg-shaped outline with the broader end at the base.
The body which after fertilization becomes the seed.
The upper of the two bracts which inclose the flower in grasses.
With segments radiately diverging.
A somewhat loose and irregular compound flower cluster.
Id Compositoe the bristles, awns, teeth, or scales which crown the achene.
A plant which grows upon other plants and absorbs their juices.
The support of one of the flowers composing a flower cluster.
The stalk of a flower cluster or of a single flower.
Lasting year after year.
Having both stamens and pistils.
A leaf so clasping the stem as to seem pierced by it.
The floral envelope, sepals and petals, regarded collectively.
Said of organs which remain attached to their place of growth after growth has ceased.
One of the divisions of the inner floral envelope or corolla.
The footstalk of a leaf.
Compound, with leaflets arranged along the sides of a common petiole.
The seed-bearing organ of a flower, consisting of ovary, stigma, and style, or the latter sometimes lacking.
Having pistils; ordinarily used in the sense of having no stamens.
Any dry and dehiscent fruit.
The fertilizing grains borne in the anthers.
A sharp outgrowth from the bark of a stem, or on the surface or stalk of a leaf.
Lying or trailing on the ground but without rooting at the nodes.
Lying flat on the ground.
Covered with short, soft, and down-like hairs.
An elongated simple flower cluster with each flower pedicelled.
The axis of a spike or a raceme, or of a compound leaf.
One of the flower stalks of an umbel; the strap-shaped marginal flowers in the Compositoe.
The more or less expanded end of the stem which bears the organs of a flower, or, in the Compositoe, the collection of flowers in a head.
Curved downward or backward.
Bent abruptly downward or backward.
Having the members of each part alike in form and size.
Rolled backward from the margin or apex.
A primary or prominent vein in a leaf.
An underground, bud-bearing stem.
A naked or nearly leafless flower-stalk arising directly from the crown of the root.
Thin, dry, and membranous, not green.
One of the divisions of a lobed or cleft leaf, or other organ of a plant.
One of the divisions of a calyx.
With sharp, forward-pointing teeth.
Without a footstalk of any kind.
A tubular envelope, as the lower part of the leaf in grasses.
A short silique.
The pod peculiar to the Cruciferoe.
The cleft or space between two lobes.
A flower spike having a fleshy axis.
A large bract or a pair of bracts inclosing a spadix or a flower cluster.
Narrowing gradually toward the base from a rounded apex.
An elongated flower cluster with flowers sessile or nearly so upon its axis.
A sharp and rigid outgrowth from the stem of a plant.
A tubular or sac-like extension of some part of a flower, usually nectar-bearing.
One of the pollen-bearing organs of a flower.
The main ascending axis of a plant.
Unproductive, as a flower without a pistil, or a stamen without an anther.
That part of the pistil through which pollen grains penetrate and effect fertilization.
The stalk-like support of a pistil; the leafstalk of a fern.
An appendage at the base of a leafstalk or on each side of its insertion.
A runner, or any basal branch which takes root at the nodes.
Marked with lengthwise lines or ridges.
The (usually) slender and elongated part of a pistil connecting the ovary and stigma.
Juicy and fleshy.
The line of splitting or opening of a dehiscent fruit.
Arranged in threes.
Very slender, coiling organs by which some climbing plants cling to a support.
Densely covered with wool-like hairs.
Ending abruptly as if cut off squarely.
A short, thickened, underground branch having numerous buds or "eyes".
A flower cluster having all the pedicels arising from the same point.
Bearing staminate and pistillate flowers on different plants.
The bladder-like covering of a one-seeded fruit.
One of the divisions into which a capsule splits.
Branching threads of fibrous tissue in leaves and other organs.
Glutinous or sticky.
Arranged in a circle around a stem.