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An alphabetical listing of General terms and items.
Falling off early or prematurely; deciduous.
Limy; as in water or soil made basic by a prevailing amount of calcium ions.
A hardened thickening.
Having the texture of a callus.
A hard protuberance or callosity; often (in grasses) the swelling at the base or joint of insertion of the lemma or palea.
The outer, usually green, series of perianth parts; the sepals taken collectively.
Thin layer of meristematic cells, typically that which gives rise to secondary xylem or phloem.
Bell-shaped or cup-shaped, typically with a flared or enhanced rim.
Having a groove or channel.
Having a net-like or sculptured surface.
The elongated new shoot of shrubs, such as in Rubus.
Densely beset with matted, often grayish-pubescent, hairs.
Head like; very densely clustered.
A small head of flowers.
A dry dehiscent fruit composed of two or more carpels.
A pistil, or one of the units of a compound pistil.
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Cartilage like; firm and tough but neither rigid nor bony.
In grasses, a seed-like fruit with a thin pericarp; a grain.
A dry and scaly flowering spike
Tail-like, or bearing a tail-like appendage.
The ligneous or woody base or a perennial plant.
Having an above-ground stem.
Pertaining to the stem or features of the stem.
Tufted, usually referring to the compact arrangement of the stem bases with respect to each other and their position in the soil; sometimes spelled caespitose.
Dry, scaly, often small, bracts; typically referring to those scales subtending the individual flowers in composite heads.
The basal part of an ovule where it is attached to the funiculus.
Areas in the hollow pith of twigs where vertical walls occur at close intervals.
Thin, but firm; resembling the more ancient writing paper.
A modified pore, usually involving an opening in the anther.
The green photosynthetic pigment.
A symptom of disease or disorder in plants in which a plant or part of a plant is light green or greenish-yellow because of poor chlorophyll development or destruction of chlorophyll
Hairs or slender bristles confined to the margins of some organ.
Fringed with cilia; bearing cilia on the margins.
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Rolled coilwise from the top downward, as in unopened fern fronds.
Pertaining to the dehiscence of a capsule (pyxis) which opens by a circular, horizontal line, the top usually coming off as a lid.
Tending to encircle or invest, as in the base of a leaf which forms partly around the stem to which it is attached.
When a stalk-less leaf encircles the stem.
Club-shaped; dilated upwards.
The narrowed base or stalk of some petals.
Distinctly divided or incised, usually to about the middle.
Fertilized in the bud, without the opening of the flower.
Flowers devoid of a corolla. The flowers never open, but develop into fruits by self-fertilization.
A group of individuals, resulting from vegetative multiplication; any plant propagated vegetatively and therefore, presumably a duplicate of its parent.
Sheath or structure formed by the uniting of stamens around the pistil.
Shaped like a column or pillar.
A dense tuft of hairs, often resembling a beard, attached to a seed.
Bearded, with a coma.
Pertaining to leaves which are divided into distinct leaflets.
Strongly flattened, especially laterally.
Hollow; in the context of the interior of a curved surface; opposite of convex.
Two or more circles having a center in common.
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Folded together lengthwise.
Three-dimensional object with a circular base, the sides all tapering to a point at the summit; the fruit of pines and their relatives; spore case of Equisetum. Compare strobile.
Fused or united to a similar plant part. Compare adnate.
The part of the stamen which connects the two parts of an anther.
Coming together; meeting at a common point but not fused.
Said of two or more taxa belonging to the same species.
Abruptly narrowed or reduced.
Curved or rounded, as the exterior of a circular form viewed from without; opposite of concave.
Rolled up longitudinally.
White and coral-like.
A solid, bulb-like part, usually subterranean, as the "bulb" of a crocus or gladiolus.
Furnished with a little horn.
The inner series of perianth parts, often colored; the petals taken collectively.
A short-cylindric or crown-like modification of the corolla; also, a small crown in the throat of a corolla, as in Narcissus.
With a corona.
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Wrinkled or folded longitudinally.
An arrangement of the inflorescence in which stalked flowers are situated along a central axis, but with the flowers all nearly or quite attaining the same elevation with respect to each other, the oldest at the edges.
Resembling a corymb.
Resembling small corymbs.
Ribbed; having one or longitudinal nerves.
With the consistency of cotton.
A seed leaf; the first leaf (or leaves) to appear during the development of a seedling.
Saucer-shaped or cup-shaped (usually shallowly so).
Very shallowly toothed with broad, blunt teeth.
A ridge or strong keel, typically along one side of an achene or nutlet; also, the elevated portion of a petal, as in some Iris.
That portion of a stem at the ground surface; also, in the Asteraceae family, scales or awns at the summit of an achene.
With four petals in the form of a cross.
The stem of grasses, sedges, and rushes.
A cultivated variation.
A small segment of a plant grown in a nutrient-rich medium; asexual reproduction
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An abrupt point or tooth.
Bearing a cusp.
An often waxy, outer film of dead epidermal cells.
The cup-like involucre characteristic of the genus Euphorbia.
Shaped like a cylinder.
An often flat-topped inflorescence, the central floret of which blooms first.
Resembling a cyme.
A small, often compacted and usually few-flowered, cyme.
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