Margins forming a terminal angle between 45°–90°.
The final growth phase of the leaves. Adult leaves in e.g. eucalypts occur in mature trees or mallees. They are different from juvenile leaves in at least some of the characteristics such as colour, shape, size, and relationship to each other on the stem. In some eucalypts, adult leaves never or rarely form.
A secondary or subsidiary part of an organ; a special outgrowth.
Gradually tapering, drawn out.
The tissues, collectively outermost to the cambium of a woody plant.
With the surface blistered or puckered.
Paper-like in texture.
Cone-shaped, with the broad end at the base.
Young stems shooting from a stump, or the juvenile growth sprouting from mature trunks or branches.
Contraction of ‘cultivated variety’, a selection developed and maintained in cultivation, distinguished by characters significant for the purposes of agriculture, forestry or horticulture.
Oval; shaped like a flattened circle, symmetric and broadest about the middle, e.g. a leaf shape; length:breadth ratio 2.5:1 to 3:2.
Lengthened, stretched out.
In flowering plants embryos form after the fertilization of a female reproductive (egg) cell by pollen.
One plant growing on another, using the host for anchorage, but without deriving nourishment from it (i.e. not parasitic). adj. epiphytic.
A formal group of one or more genera believed to be related phylogenetically, and morphologically separable from other botanical families. cf. genus.
The general appearance of a plant, including size, shape and growth form.
Outgrowths from the epidermis, each consisting of a single row of cells; may be branched or unbranched.
Herb-like, not woody; usually green and soft in texture.
Progeny resulting from the crossing of two parents with different genetic systems, usually of different species.
In the Myrtaceae, dead bark that is persistent, usually hard, thick, widely and deeply furrowed, and impregnated with reddish exudate (kino).
Ridged like the bottom of a boat.
A photosynthetic and transpiring organ usually green and borne on the stem of a plant; may be reduced or specialised.
Ending abruptly in a short sharp point (a mucro). Often refers to the leaf tip.
Heart-shaped in outline but attached at the narrower pointed end, e.g. a leaf shape. cf. cordate.
Longer than broad, with parallel margins and rounded ends, e.g. a leaf shape; length:breadth 2.5:1 to 3:2.
Shaped like an upside-down egg, longer than broad, broadest above the middle, rounded at both ends, e.g. a leaf shape; length:breadth 2.5:1 to 3:2.
Margins forming a terminal angle > 90°.
Oil dots; small or minute structures embedded in a leaf or other organ, secreting a volatile oil, mostly visible as small translucent dots (a hand lens is often needed) against a strong light; usually making the organ aromatic when crushed.
± round in outline, with length equal to width. adj. orbiculate.
Shaped like an egg, broadest below the middle, rounded at both ends, e.g. a leaf shape; length:breadth 2.5:1 to 3:2.
Lying flat on the ground.
Curved outward or downward.
Rolled backwards (and thus often downwards), e.g. of the margins of a leaf.
Extrusive igneous rock with very high silica content.
Of a surface when roughed by short protuberances. adj. scabrous; diminutive scaberulous, scabridulous.
Rough to touch.
Scaly, covered with small flakes.
The reproductive bodies formed from a fertilised ovule, consisting of a protective coat enclosing the embryo and food reserves.
The basic unit of classification that usually refers to one or several groups of plants or other living organisms, which share common features and/or ancestry, and interbreed and maintain their distinctive identity through successive generations.
Dead bark that is persistent, long-fibred, thick, furrowed, and often interlaced beneath the surface.
1 of 2 or more names for the same taxon. Only 1 name is accepted under the International Code of Botanical Nomenclature.
The study of the principles and practices of classification, the establishing and defining of relationships; often used interchangeably with systematics, but strictly taxonomy is only part of systematics.
With colours or shapes arranged in squares to give a chequered appearance, e.g. of bark.
With a ± regularly incised margin.
Having a wavy margin, such as a leaf.
Urn- or pitcher-shaped.
Striped or blotched with various colours, usually of leaves. Variegated leaf blades (lamina) are conspicuously marked with two or more colours, that may take the form of spots, mottling, lines, patches, etc. The term does not include features such as the veins or midribs of a leaf being a different colour.
A plant growing out of place or where it is not wanted; often characterised by high seed production and their ability to colonise disturbed ground quickly.
An arrangement of three or more parts or organs at the same level round an axis. adj. whorled.