Peltate: Having a centrally attached stalk or petiole like an umbrella.*
The leaf stalk of mayapples (Podophyllum peltatum) is attached in the middle of the leaf, rather than at the leaf margin. Some other plants with peltate leaves are water lotus (Nelumbo) and nasturtium (Tropaeolum).
*Pell, S.K., Angell, B. (2016). A botanist’s vocabulary: 1300 terms explained and illustrated. Portland: Timber Press.
Flabellate/Flabelliform: Shaped like a fan.* Ginkgo trees are easily identified by their flabellate leaves. *Allaby, M. (2006). A dictionary of plant sciences (Revised ed.). Oxford: Oxford…
Lyrate: [of leaves] Pinnatifid with the terminal lobe rounded and much larger than the subtending lobes.* The word lyrate is used to describe leaves that…
Sinus: The portion of a leaf margin that dips in between two lobes or crenations.* The alternating sinuses and lobes around the margins of maple leaves…
Runcinate: Pinnatifid with the lobes pointed and sloping toward the petiole; e.g., the leaves of dandelion (Taraxacum officinale)* Pinnatifid leaves have lobes that are divided halfway…