- Organs unusual in position, as roots developing from stems or leaves.
- Without a stem, the leaves all basal.
- A small, dry, hard, 1-loculed, 1-seeded, indehiscent fruit.
- Sharp; tapering to the apex with straight sides.
- Catkin; a usually deciduous dense spike or raceme.
- Clasping the stem, as a leaf base or stipule.
- With staminate flowers borne above the pistillate ones, as in many species of Carex.
-Plant growing from seed and producing flowers and seeds and dying the same year.
- The pollen-bearing part of the stamen.
- Flowering; when the flower is expanded completely and typically functional.
- Located at the tip.
- Ending in an abrupt slender tip.
- Lying close and flat against another part.
- A small space on or beneath the surface, as between the veins in cacti, which bears the flowers, spines, glochids, or all three.
(armed) - Spines, barbs, prickles, or thorns (or bearing them).
- Growing obliquely upward, often curving.
- Gradually narrowing to a tip or base.
- An ear-shaped appendage.
- With one or more auricles.
- A bristle-like appendage; the tips of glumes and lemmas on many grasses.
- The upper (ventral) angle between a leaf and a stem.
- Upper petal of a papilionaceous flower, as in the sweet pea.
- Related to or located at the base.
- A prolonged, usually narrowed tip of a thicker organ, as in some fruits and petals.
- Bearing long hairs, usually in tufts.
- Having two teeth.
- Plants living two years, usually flowering and fruiting the second year.
- Two-cleft to about the middle.
- With two locules, as an ovary.
- Doubly or twice pinnate, as in many compound leaves.
- Thin and inflated.
- The expanded part of a leaf or petal.
- Bureau of Land Management.
- A reduced leaf subtending a flower, usually associated with the inflorescence.
- With bracts.
- Stiff hairs.
- An underground leaf bud with thickened scales, as in the onion.
- Falling off early or prematurely.
- Growing in tufts.
(pl. calyces) - Outer whorl of flowering parts; collective term for all sepals of a flower.
- Covered with gray white or hoary fine hairs.
- Head-shaped, or in a head.
- A dry fruit of more than one carpel, which opens to release the seeds.
- Like cartilage, tough and firm.
- A deciduous dense spike or raceme with bracteate, apetalous, unisexual flowers, as in Salicaceae.
Caudex (pl. caudices)
- The woody base of an otherwise herbaceous perennial.
- With a definite leafy stem.
- Belonging to or on the stem.
- Fringed with marginal hairs.
- Ash-colored; light gray.
- Leaf partly or wholly surrounding the stem.
- Resembling lattice-work.
- The narrowed base of the petal in some flowers.
- Split nearly to the middle.
- Cone-shaped, with the point of attachment at the broad base.
- The union of like structures.
- Portion of the filament connecting the two cells of an anther.
- Abundant, plentiful.
- Inner whorl of floral parts; collective name for petals.
- A flat-topped or convex racemose flower cluster, the lower or outer pedicels longer, their flowers opening first.
- Having margins with rounded teeth.
- Curled, wavy.
- Tipped with a cusp or a sharp, short, rigid point.
(pl. cyathia) - The inflorescence of Euphorbia, consisting of a 3-loculed ovary and a cuplike involucre bearing male flowers with solitary stamens.
- Elongate and circular in cross-section.
- A flat-topped or convex paniculate flower cluster, with the central flowers opening first.
- With flowers in a cyme.
- Falling off; not evergreen.
- Resting on the ground, but with tip of the stem ascending.
- Extending down the stem below the insertion, as with leaves or stipules.
- Turned abruptly downward.
- Opening spontaneously when ripe to discharge the contents (fruit and anthers).
- Equilaterally triangular; shaped like the Greek letter Delta.
- Having the margins cut with sharp teeth, which are not directed forward.
- Minutely dentate or toothed.
- Small or poorly developed, usually due to environmental conditions.
- Having two forms.
- Having staminate and pistillate flowers on different plants.
- Disklike; having disk flowers.
- In Asteraceae, the tubular flowers of the head as distinct from the ray flowers.
- Deeply divided into numerous fine segments.
- Having an upper and lower surface.
- A flattened circle form, more than twice as long as broad, widest in the center and the two ends equal.
- With a small notch at the apex.
- Undivided; the margin continuous, not incised or toothed.
- Growing separately on the sides of the corolla, as with stamens.
- Upright in relation to the ground, or sometimes perpendicular to the surface of attachment.
- Irregularly toothed as if gnawed.
- Spread out flat.
- Protruding, as stamens projecting from the corolla; not included.
Federally listed species
- Any species processed through the proposed and final rulemaking stages by the U.S. Fish and Wildlife Service (FWS) as threatened or endangered.
- A thread, especially the stalk of an anther.
- Hollow, often rather enlarged.
- The lemma and palea of the small included flower of a grass; also the small flower of the Asteraceae.
- A dry, dehiscent fruit with locule opening on one suture line.
- A set of small appendages in the throat of the corolla in the Boraginaceae.
- U. S. Forest Service
- Gradually widening upwards, like a funnel.
- U. S. Fish and Wildlife Service
- The upper lip in certain 2-lipped corollas, as in Castilleja.
- Swollen on one side.
- Becoming glabrous with age.
- Without hairs.
- A depression, protuberance, or appendage which secretes a usually sticky fluid.
- Bearing glands.
- Covered or whitened with a bloom, as a cabbage leaf.
- Spherical or rounded.
- Densely compacted in clusters.
- The pair of bracts at the base of a grass spikelet.
- Sticky; with a sticky exudation.
- Marked with small regular distances.
- The stalk of the pistil.
- Having the pistillate flowers of a spikelet borne above the staminate flowers.
- General appearance of a plant.
- Half spherical.
- Pertaining to an herb; opposed to woody; having the texture or odor of a foliage leaf; dying to the ground each year.
- The stems and leaves of a plant.
- Rough, with stiff or bristly hairs.
- Minutely hispid.
- Rough, with coarse, stiff hairs.
- Translucent when seen in transmitted light.
- A cup-shaped enlargement of the receptacle on which the calyx, corolla, and often the stamens are inserted; in perigyny, the "calyx tube."
- Growing or living below the surface of the ground.
- Overlapping as shingles on a roof.
- In ferns, the epidermal outgrowth that covers the sorus.
- The flower cluster of a plant.
- The portion of stem between two connective nodes.
- A secondary involucre, as the bracts subtending the secondary umbels in the Apiaceae.
- A whorl of bracts subtending a flower cluster, as in the heads of Asteraceae.
- With edges rolled inward toward the upper side.
- A prominent dorsal ridge, analogous to the keel of a boat; the two lower united petals of a papilionaceous corolla.
- Cut into narrow lobes or segments.
- Woolly; densely clothed with long entangled hairs.
- Lance-shaped; much longer than broad, tapering from below the middle to the apex and to the base.
- A segment of a compound leaf.
- In grasses, the lower of the two bracts immediately enclosing the floret.
- Woody, or resembling wood.
- Thin, collarlike appendage on the inside of the blade at the junction with the sheath in grasses; the strap-shaped part of a ray corolla in Asteraceae.
- The expanded flat part of an organ.
- Long and narrow, of uniform width, as the leaf blades of grasses.
- One of the projections of an irregular corolla or calyx, as in the Lamiaceae or Orchidaceae.
- A division or segment of an organ, usually rounded or obtuse.
- The cavity or cell of an organ, in reference to the pistils and stamens.
- A legume which is constricted between the seeds.
- Straight appressed hairs attached by the middle and tapering to the free tips; pick-shaped.
- Withering without dropping off, especially basal leaves.
- A suffix denoting parts or numbers, as 3-merous.
- The central rib of a leaf or other organ.
- Having a chain-like series of bumps, swellings, or joints, resembling beads on a string.
- Having staminate and pistillate flowers on the same plant, but not perfect ones.
- Marked with colored spots.
- Moist and viscid; slimy.
- Possessing a short, straight point, as some leaves.
- Rough with short and firm sharp outgrowths.
- A simple vein or slender rib of a leaf or bract.
- Bent to one side.
- The joint of a stem; the point of insertion of a leaf or leaves.
- National Park Service.
- A hard, indehiscent, usually 1-seeded fruit, produced from a compound ovary.
- A small nut.
- Conical, but attached at the narrower end.
- Inversely lanceolate.
- Much longer than broad, with nearly parallel sides.
- Shaped like the longitudinal section of an egg, but with the broadest part toward the tip.
- Blunt to almost rounded at the end.
- Yellowish white.
- Having a terminal leaflet instead of a tendril or pair of leaflets.
- Approximately circular in outline.
- The part of the pistil that contains the ovules.
- The part within the ovary that becomes a seed.
- An appendage in the throat of an irregular flower partly or completely closing the throat.
- One of the chafflike scales on the receptacle of many Asteraceae; the inner bract of a grass floret, often partly surrounded by the lemma.
- Lobed or veined where the branches arise from a central point, like the fingers on a hand.
- Palmately lobed or cleft.
- A compound racemose inflorescence.
- Butterflylike corolla of the pea; with banner, wings, and keel.
- Soft superficial glands or protuberances.
- Having papillae.
- Modified calyx limb of the Asteraceae; consisting of a crown of bristles or scales at the summit of the achene.
- With narrowly set divisions, as in the teeth of a comb.
- The stalk of a single flower in a cluster, or of a spikelet in grasses.
- The stalk of a flower or flower cluster.
- Shield-shaped; a flat body having a stalk attached to the lower surface.
- Hanging downward; pendant.
- Of three or more years duration.
- A flower having both stamens and pistils.
- The floral envelopes; collectively, the calyx and corolla, especially when they are alike.
Perigynium (pl. perigynia)
- The scalelike organ surrounding the pistil in Carex.
- Borne around the ovary, not beneath it; as when the stamens, corolla, and sepals are inserted on the floral tube.
- One of the leaves of a corolla, usually colored.
- With a leaf stalk or petiole.
- The study of the timing of recurring natural phenomena (such as flowering), especially as they relate to climatic conditions.
- Bearing soft and straight spreading hairs.
- Bearing very small, soft, straight, spreading hairs.
(pl. pinnae) - a leaflet or primary division of a pinnate leaf.
- A compound leaf having leaflets arranged on each side of a common petiole; featherlike.
- Pinnately cleft into narrow lobes not reaching the midrib.
- The ovule-bearing organ of a flower, consisting of a stigma and ovary, usually with a style between; gynoecium.
- Provided with pistils and without stamens; female.
- Many-headed, as in a branched caudex.
- Any dry, dehiscent fruit, especially a legume.
- Trailing on the ground, but not rooting.
- Any species of fish, wildlife, or plant that is proposed by the FWS or the National Marine Fisheries Service to be listed as threatened or endangered.
- Lying flat upon the ground.
- A false scape, as in a tulip where not all the leaves are basal.
- Minutely pubescent.
- Covered with short, soft hairs; downy.
- Dotted with punctures, translucent pitted glands, or colored dots.
- Bearing irregular blister-like swellings or pustules, mostly at the bases of hairs.
- A simple, elongated, indeterminate inflorescence with each flower subequally pedicelled.