Alternate - leaves that grow alternately at different levels around the stem, sometimes in a spiral formation.

Annual - completing lifecycle within a year of germination.

Axil - an area between a leaf and the stem from which the leaf arises.

Axillary - growing in axil.

Bract - leaf-like structure at base of flower.

Bracteole - secondary bract at base of flower.

Decumbent - lying on the ground, but rising at the tips. Usually sets roots as the nodes touch the ground.

Detritus - particles from decaying plants and animals.

Elliptic - shaped like an ellipse.

Inflorescence - a cluster of flowers.

Internodes - part of the stem between the two nodes.

Ligule - the inner junction of the leaf-sheath and blade in grasses.

Linear - long and narrow with parallel edges.

Nodes - place on plant stems where leaves are attached.

Opposite - leaves arising at the same level but on opposite sides of the stem.

Ovate/Ovoid - egg shaped.

Panicle - branched flower head.

Perennial - plant that has a lifecycle lasting more than two years.

Perianth - the calyx (outer whorl of a flower) and corolla (formed of petals) collectively.

Procumbent - trailing on the ground.

Prostrate - lying flat on the ground.

Rhizomatous - having a rhizome or thick underground horizontal stem.

Sessile - flowers and/or leaves that sit directly on a base without a stalk.

Sheath - an extension of the leaf that surrounds the stem.

Spikelet - units of flower heads on grasses, consisting of one or more florets (small flowers) on a thin stalk.

Terete - cylindrical but usually slightly tapering at both ends. Circular in cross-section and smooth-surfaced.

Terminal inflorescence - flowers at end of stem.

Tussock - a small, thick clump of growing vegetation, usually grass or sedge.