Wikipedia
In botany, leaf shape is characterised with the following terms (botanical Latin terms in brackets):
* Acicular (acicularis): Slender and pointed, needle-like
* Acuminate (acuminata): Tapering to a long point
* Aristate (aristata): Ending in a stiff, bristle-like point
* Bipinnate (bipinnata): Each leaflet also pinnate
* Compound: The combination of one leaflet arrangement within an arrangement at a larger level; e.g.:"bipinnate, twice-pinnate: the leaflets are themselves pinnately-compound"
* Cordate (cordata): Heart-shaped, stem attaches to cleft
* Cuneate (cuneata): Triangular, stem attaches to point
* Deltoid (deltoidea) or deltate: Triangular, stem attaches to side
* Digitate (digitata): Divided into finger-like lobes
* Elliptic (elliptica): Oval, with a short or no point
* Falcate (falcata): sickle-shaped
* Flabellate (flabellata): Semi-circular, or fan-like
* Hastate, spear-shaped (hastata): Pointed, with barbs, shaped like a spear point, with flaring pointed lobes at the base
* Lance-shaped, lanceolate (lanceolata): Long, wider in the middle
* Linear (linearis): Long and very narrow
* Lobed (lobata): With several points
* Obcordate (obcordata): Heart-shaped, stem attaches to tapering point
* Oblanceolate (oblanceolata): Top wider than bottom
* Oblong (oblongus): Having an elongated form with slightly parallel sides
* Obovate (obovata): Teardrop-shaped, stem attaches to tapering point
* Obtuse (obtusus): With a blunt tip
* Orbicular (orbicularis): Circular
* Ovate (ovata): Oval, egg-shaped, with a tapering point
* Palmate (palmata): consisting of leaflets[1] or lobes[2] radiating from the base of the leaf.
* Pedate (pedata): Palmate, with cleft lobes
* Peltate (peltata): Rounded, stem underneath
* Perfoliate (perfoliata): Stem through the leaves
* Pinnate (pinnata): Two rows of leaflets
o odd-pinnate, imparipinnate: pinnate with a terminal leaflet
o paripinnate, even-pinnate: pinnate lacking a terminal leaflet
o pinnatifid and pinnatipartite: leaves with pinnate lobes that are not discrete, remaining sufficiently connected to each other that they are not separate leaflets.
o bipinnate, twice-pinnate: the leaflets are themselves pinnately-compound
o tripinnate, thrice-pinnate: the leaflets are themselves bipinnate
o tetrapinnate: the leaflets are themselves tripinnate.
* Pinnatisect (pinnatifida): Cut, but not to the midrib (it would be pinnate then)
* Reniform (reniformis): Kidney-shaped
* Rhomboid (rhomboidalis): Diamond-shaped
* Round (rotundifolia): Circular
* Sagittate (sagittata): Arrowhead-shaped
* Spear-shaped: see Hastate.
* Spatulate, spathulate (spathulata): Spoon-shaped
* Subulate (subulata): Awl-shaped with a tapering point
* Sword-shaped (ensiformis): Long, thin, pointed
* Trifoliate, ternate (trifoliata): Divided into three leaflets
* Tripinnate (tripinnata): Pinnately compound in which each leaflet is itself bipinnate
* Truncate (truncata): With a squared off end
* Unifoliate (unifoliata): with a single leaf
References
1. ^ "Cumulative Glossary for Vascular Plants". Flora of New South Wales. http://www.anbg.gov.au/glossary/fl-nsw.html.
2. ^ "palmate (adj. palmately)". GardenWeb Glossary of Botanical Terms. http://glossary.gardenweb.com/glossary/palmate.html. |
Leaf Shapes
Leaf Shapes - November 11, 2009
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