| Word: |
Definition: |
| achene |
a small, dry, hard, one celled, one
seeded, non-spliting fruit. |
| acuminate |
taper-pointed |
| alternate |
leaves or branches occurring singly at
the nodes.
(click
here to see Alternate leaves)
|
| annual |
of one year's duration |
| anther |
the part of the stamen that contains
the pollen.
(click
here to see flower)
|
| axil |
the upper angle between a leaf and the
stem.
(click
here to see leaf)
|
| axillary |
occurring in the axils. |
| bract |
modified leaves surrounding the
inflorescence or flower, more or les different from ordinary leaves;
always stalkless (sessile).
(click
here to see composite-flower)
|
| calyx |
the outer circle of floral leaves,
consisting of the sepalswhich may be distinct or joined together. If
only one circle of floral leaves is present, it is called a calyx
even though it appears like a corolla. |
| catkin |
a scaly spike of small flowers of
which the pussy willow is a typical example. |
| ciliate |
fringed with hairs |
| corolla |
the inner circle of floral leaves
(petals), that are usually showy. The petals may be seperate or
united. The corolla is always surrounded by a calyx. |
| corymb |
a flat or convex flower cluster, with
branches arising at differnt levels and flowers opening at the outer
edges first. |
| Cotyledons |
The first leaves that are produced
from the seed |
| deciduous |
|
| Dentate |
Toothed: refering to leaf margins with
toothed edges. |
| Dioecious |
Unisexual, with male and female
flowers on seperate plants |
| Disk |
central region of a head of flowers
like the sunflower |
| Dissected |
Leaves cu deeply into many lobes or
divisions |
| Elliptic |
(click
here to see elliptic leaf) |
| Entire |
the margin (usually of leaves) that is
not notched or toothed in any way. |
| Evergreen |
holding the leaves over winter or
longer, until new ones appear. |
| Fertile |
Capable of bearing fruit |
| Filament |
The stalk of a stamen. Also any
thread-shaped appendage. |
| Floret |
A small flower, usually of a dense
cluster of flowers. |
| Flower |
a test flower definition
(Composit
Flower) |
| Frond |
The leaf of a fern. |
| Genus |
A group of plants made up of closely
related species. (plural genera) |
| Glabrous |
Smooth, hairless, bristleless |
| Glaucous |
Covered with a fine white powdery
substance that rubs off, like that on a cabbage leaf. |
| Habitat |
The situation in which a plant grows. |
| Hepatotoxic |
Toxic to the liver. |
| Herb |
A plant with no persistant woody stem. |
| Herbaceous |
Not woody. Applied to plants that are
herbs as opposed to shrubs or trees. |
| Imbricated |
Overlapping like shingles on a roof |
| Imperfect flower |
Lacking either stamens or pistils. |
| Inferior |
Applied to the seedpod (ovary) when
the calyx and corolla are placed on top of it, as opposed to being
inserted at its base. |
| Inflorescence |
The flowering part of the plant. |
| Involucre |
A whorl of bracts around a flower. |
| Irregular |
Used to describe a calyx or corolla in
which all parts are not alike. A rose is regular, a sweet pea is
irregular. |
| Keel |
The two lower petals of the flowers of
the legume or pea family. |
| Lanceolate |
Lance shaped.
(Click
here to see lanceolate shape) |
| Leaflet |
One of the devisions of a compound
leaf.
(click
here to see compound leaf) |
| Linear |
Narrow and flat, with parallel margin |
| Lobe |
Rounded projection of a leaf.
(click
here to see a lobed leaf) |
| Midrib |
Middle or main rib of a leaf. |
| Montane |
The region between 6,000 and 9,000
feet altitude. Usually contains a mixed forest of pine, fir, spruce
and aspen. |
| Nephrotoxic |
Toxic to the kidneys |
| Node |
The points on a stem from which the
leaves arise. |
| Oblanceolate |
(click
here to see oblanceolate leaf) |
| Obovate |
The broad end of a leaf upward or at
the opposite end to the leaf stalk or petiole.
(click
here to see obovate leaf) |
| Opposite |
Applied to leaves and branches where
an opposing pair occurs at each node.
(click
here to see opposite leaves) |
| Orbicular |
(click
here to see orbicular leaf) |
| Ovary |
The part of the pistil which contains
the ovules (seeds)
(click
here to see flower structure) |
| Ovate |
Shaped like an egg, with the broader
end of the leaf nearest the petiole (leaf stalk).
(click
here to see ovate leaf) |
| Palmate |
A leaf whose leaflets all arise from
the apex of the petiole like a hand without stretched fingers.
(click
here to see palmate leaf) |
| Panicle |
An open or dense cluster in which the
secondary branches are branched again. Usually refers to an
inflorescence.
(click
here to see to see a panicle) |
| Pedicel |
The stalk of each individual flower in
a cluster. |
| Peduncle |
A flower stalk of a single or cluster
of flowers. |
| Pendent |
Hanging. |
| Perennial |
Lasting from year to year. |
| Perfect |
A flower containing both pistils and
stamens.
(click
here to see flower structure) |
| Perianth |
The floral envelopes of the flower,
especially when the petals and sepals cannot be differentiated. eg:
many lilies. |
| Petal |
A constituent member of the corolla.
(click
here to see flower structure) |
| Petaloid |
Petal-like |
| Petiole |
The leaf-stalk.
(click
here to see leaf) |
| Photosensitization |
Dermatitis involving the white skinned
areas induced by the reaction of compounds in the skin with
ultraviolet light. |
| Pinnate |
Leaflets arranged along the long axis
of the leaf.
(click
here to see pinnate leaf) |
| Pinnately lobed,
divided |
Variable divisions of a pinnate leaf.
(click
here to see a pinnately lobed leaf)
|
| Pistil |
The seed-bearing organ of the flower.
It consists of the ovary which becomes the seed pod, and the style
and stigma.
(click
here to see flower structure) |
| Pubescent |
Covered by fine, soft hairs. |
| Raceme |
A flower cluster with single flowers
along the axis of the inflorescence.
(click
here to see raceme) |
| Ray |
The marginal flower of a head or
cluster when different from the rest eg: sunflower. |
| Reniform |
Kidney shaped.
(click
here to see reniform leaf) |
| Rhomboid |
(click
here to see rhomboid leaf) |
| Sepal |
A member of the calyx
(click
here to see flower structure) |
| Serrate |
Leaf margin with forward pointing
teeth. |
| Sessile |
Without a stalk |
| Shrub |
Woody perennial, smaller than a tree,
usually with multiple stems. |
| Spatulate |
Gradually rounded downward from a
rounded summit
(click
here to see spatulate leaf)
|
| Species |
A group containing all the individulas
of a particular kind of plant. |
| Spicate |
Arranged in or resembing a spike |
| Spike |
A simple inflorescence with the
flowers sessile or nearly so, arranged along a elongated common
axis.
(click
here to see spike) |
| Stamen |
The pollen-bearing organ made up of
the filament and the anther that contains the pollen.
(click
here to see flower structure) |
| Stigma |
The region of the pitil that receivs
the pollen.
(click
here to see flower structure. |
| Stipules |
The appendages on each side of the
base of certain leaves. |
| Style |
The beak-like prolongation of the
pistil above the ovary, which bears th stigma. |
| Umbel |
The umbrella-like form of
inflorescence in which the peduncles or pedicles all arise from one
point.
(click
here to see an umbel) |
| Whorl |
A group of thre or more leaves or
stems radiating from a node.
(click
here to see whorled leaves) |