|tapered to a sharp point with concave sides, as a leaf or sepal.
|tapered to a sharp point with straight sides.
|arising singly at each node on a stem, as the leaves.
|the pollen-producing organ of the stamen; in
|growing upward obliquely, as stems or flowers on a stem.
|growing at the base, as leaves at or near the ground.
|a tuft of hairs, as on the palate or staminode.
|the broad part of a leaf or petal.
|a leaf, usually reduced, in the inflorescence, from the axil of which a floral peduncle or pedicel may arise
|the sepals of a flower collectively, the outermost portion of a flower.
|a dry specialized seed pod, as in Penstemon.
|with a sharp tail-like appendage, as on a leaf tip.
|with a leafy stem rising above ground.
|of or pertaining to a leafy stem, bearing flowers in Penstemon.
|a longitudinal groove, as a leaf folded along the midrib.
|partly or wholly surrounding a stem, as the base of a leaf.
|10 millimeters, 0.1 decimeter, 0.01 meter (approx. 13/32 inch).
|joined at the base and surrounding a stem, as a pair of leaves.
|the tissue joining two pollen sacs as in the stamens of Penstemon.
|collectively the petals of a flower; in Penstemon, joined at the base to form a tube and the petal lobes.
|one peduncle of a branching inflorescence bearing two or more flowers with the terminal flower blooming first; in Penstemon, one side of a verticillaster.
|with leaves falling at the end of the growing season.
|curved or angled downward, i.e., below the horizontal
|a stem with a curving or reclining base and erect or ascending tip.
|rupturing at maturity, as anther sacs or capsules.
|with spreading or outward-pointing teeth on the margin.
|as an inflorescence in which the terminal flower blooms first, stopping elongation of the peduncle or main stem.
|spreading widely apart but not completely opposite, as the anther sacs in Penstemon.
|0.1 meter, 10 centimeters, approximately 4 inches.
|approximately the shape of an oval, as a leaf or sepal.
|growing in length; considerably longer than wide.
|growing in a confined area or geographic region.
|continuous, not toothed or cut, as a leaf margin.
|a ragged or irregularly cut margin.
|leaves remaining green over winter.
|introduced; not native to a region.
|enlarged, as the tip of a staminode.
|spreading out flat, as dehiscent anther sacs.
|protruding, as stamens or staminode from a corolla.
|capable of reproduction, as a stamen bearing pollen.
|the stalk of a stamen supporting the anther.
|thick and succulent, pulpy.
|curved or bent, as a stem.
|the leaves collectively.
|Genus (pl. Genera)
|a group of structurally related species; a classification between family and species.
|a smooth surface; without hairs or glands.
|bearing glands, as on the ends of hairs or on a surface.
|a fine waxy powder, usually blue or gray, covering a surface.
|Pigmented veins in the throat or on the palate of a tubular corolla, as in Penstemon.
|a plant or that part of a plant dying back at the end of a growing season.
|green colored, non-woody.
|deeply cut, as the teeth on a leaf margin.
|angled upward, above horizontal.
|enclosed within a structure, as the stamens within the corolla.
|as an inflorescence in which the bottom flowers bloom first, so that the peduncle or main stem can continue to elongate.
|the flowers collectively on a plant; the arrangement of flowers along a flowering stalk including side branches.
|with a conspicuous longitudinal ridge, as on the top of a corolla.
|the expanded part of a corolla; from the basal tube to the throat in Penstemon.
|long and narrow with nearly parallel sides; like a line.
|the petals of a corolla aggregated into a shelf, as the upper and lower lips in Penstemon.
|0.001 meter, approximately 1/25 of an inch.
|with a short, sharp point at the tip, as a leaf or sepal.
|introduced into an area and wet established.
|a sweet substance produced by a flower to attract pollinating insects; a nectary is the structure that produces nectar
|the point of attachment of a leaf bract or branch on a stem.
|reverse lance-shaped, attached at the narrow end and enlarged at the outer end.
|longer than broad with nearly parallel sides, as a leaf.
|broad at the tip, the sides forming an angle greater than 90 degrees.
|located directly across from each other, as two leaves on a stem or the sacs of a dehiscent anther.
|the mouth or opening of a corolla tube; the throat.
|the expanded base of the pistil; the structure that contains developing seeds in plants.
|broadly elliptic or egg-shaped, as the leaves.
|raised portion(s) of the lower lip of the corolla, tending to constrict the throat.
|a branched inflorescence that blooms from the bottom upward.
|the stalk of a single flower in an inflorescence.
|the stalk of a cyme or inflorescence or of a single flower.
|a leaf stalk or narrow leaf base.
|the female organ of a flower, typically composed of stigma, style and ovary.
|in Penstemon, a pair of pollen sacs constitutes an anther.
|lying flat on the ground
|with hairs of any sort; herein generally hairs without glands.
|an unbranched inflorescence with each flower on an individual pedicel attached to the main axis, blooming from the bottom upward.
|bending or angled downward; lying on some support, as the base of a stem lying on the ground.
|curving or bent backward
|spaced well apart; small in size.
|rolled backward or under, as margins.
|a horizontal underground stem or rootstock
|vigorous, often above average in size
|a cluster of leaves, usually encircling the base of a plant
|pouches, see pollen sacs
|in the shape of an arrow or arrowhead
|thin and white, as the margin of a sepal.
|arranged on one side of a main stem, as an inflorescence.
|outermost floral leaves; segments of the calyx.
|like saw teeth; forward-pointing teeth on the margins.
|directly attached at the base, as a leaf without a petiole.
|young or short stems or branches. Uses a gun, as pointing at deer in garden.
|a plant with several stems, woody at the base, not dying back at the base.
|spatula-shaped, broad and rounded at the end and tapered to a narrow base, as a leaf.
|a plant that possesses one or more unique characteristics; a classification between genus and variety (subspecies).
|an unbranched inflorescence with sessile flowers on the main axis.
|expanding to nearly horizontal branches, as an inflorescence.
|the male, pollen-producing organ of a flower, normally composed of a filament and an anther.
|a modified sterile stamen producing no pollen.
|an axis of a plant bearing nodes, leaves and buds, usually above ground.
|not fertile, not producing seeds or pollen; stems without flowers.
|that portion of the pistil on which pollen is deposited, normally the end of the style, often enlarged.
|the usually slender stalk connecting the stigma and ovary.
|a prefix meaning "almost" or "not quite," as in subequal and subshrub.
|a line of fusion or separation, as in the dehiscence of an anther or capsule.
|the opening or orifice of a corolla.
|a densely compact inflorescence; a panicle with indeterminate main axis and cymose branches.
|dentate; having lobes or points along a margin.
|with the end squared off or abruptly rounded as if cut off.
|with the form of a cylinder.
|an inflorescence in which 3 or more pedicels arise from a common point on a stem.
|in an anther, one side of the anther wall after dehiscence. variety—a classification in taxonomy below the species level.
|a false whorl; in Penstemon, arising at a node and composed of 2 cymes (a branched cluster of blooms that looks like a whorl).
|with long, soft hairs.
|a ring of 3 or more leaves or flowers arising from a common node or point.