Glossary

Basal Rosette – Many leaves growing from the base of the plant (just above ground) in a circular arrangement, similar to a rose

Compound – A leaf composed of several or many smaller leaflets, each of which appears to be a leaf in itself. A compound leaf can be distinguished by the bud that connects the whole leaf to its branch

Elliptical – Leaves shaped in such a way that the middle is the widest, with both ends tapering off

Invasive - A species which spreads easily and chokes out other plants from their accustomed habitats. Often used in terms of species native to other regions or countries taking over habitats of native species.

Keys – A protective covering for a tree seed that has wings

Lanceolate - A leaf much longer than it is wide, broad at the leaf base, and pointed at the leaf's tip, shaped like a lance.

Leaflet – One of the separate but identical parts of a compound leaf

Linear - A long narrow leaf or leaflet.

Lobe – Deep indentation in a leaf that divides the leaf into sections

Opposite – Two leaves growing directly across from one another

Ovate – Leaves that are shaped like an oval and broaden at their base

Palmate – A compound leaf whose leaflets grow from a central point, like the fingers grow from the palm of the hand

Pinnate – A compound leaf whose leaflets grow on both sides of a stalk

Rayed – Flowers in the Composite family that have petals, which grow out separately like rays

Saw-toothed – Leaves with serrated teeth like the blade of a saw

Sepals – Green, leaf-like, projections, on the outside of a flower bloom, that look like a micro flower bloom themselves

Sinus – The area between two leaf lobes

Stamen – The male reproductive organ of a flower, composed of slender stalk and with an oval on the top

Teeth
– Indentations on a leaf or flower petals's edge

Toothless – Leaves or petals that do not possess indentations along their edges

Wings – A seed with a thin casing that has a weblike projection, commonly found on maple trees

Whorls - A circle of three or more leaves growing around the same point on the stem.



    Unless otherwise specified, all text, photographs, and drawings are Copyright (c) by Shu-Yee Chen and Deborah Hamer 2003. No part of this page may be reproduced without prior written consent of the authors.