A palmate compound leaf has separate leaflets radiating from the end of one petiole, like fingers from a hand. A pinnate compound leaf has leaflets attached along a central axis called a rachis, like barbs along a feather. The key difference is where the leaflets attach—not the outline of the whole leaf.
What makes a leaf compound?
A compound leaf has a blade divided into distinct leaflets that attach to a shared leaf stalk or to an extension of it. In a simple leaf, the blade remains one continuous piece, even when it is deeply divided into lobes.
That distinction matters because a simple leaf can look hand-shaped or feather-like without being compound. For example, a maple has a simple, palmately lobed leaf; a buckeye has a palmately compound leaf. “Palmate” can describe vein arrangement or lobing as well as leaflet arrangement, so identify which feature you mean.
What is the difference between palmate and pinnate compound leaves?
| Feature | Palmate compound | Pinnate compound |
|---|---|---|
| Where leaflets attach | At the end of the petiole, radiating from one point | Along an extended central axis called the rachis |
| Typical visual pattern | Like fingers spreading from a palm | Like barbs arranged along a feather |
| Examples | Ohio buckeye (Aesculus glabra) and chaste tree (Vitex agnus-castus) | American yellowwood (Cladrastis kentukea) and tree of heaven (Ailanthus altissima) |
These examples and definitions are described in Oregon State University’s Plant Identification: Examining Leaves. The attachment point is the most reliable quick distinction: a cluster from the petiole tip is palmate; leaflets arrayed along a rachis are pinnate.
#1 Best Overall
- LEAF OR LEAFLET: Shows the bud-based clue used to separate a whole leaf from an individual leaflet.
- SIMPLE VS COMPOUND: Side-by-side examples contrast one-blade leaves with multi-leaflet structures for faster recognition.
- COMPOUND FORMS: Pinnately and palmately compound examples highlight leaflet arrangement, rachis, and attachment patterns.
- FIELD CLUES: Quick-check panels organize visible traits that can be reviewed during plant identification and nature study.
- BOTANY DISPLAY: Detailed botanical artwork supports plant lessons, gardening education, and repeated reference in study spaces.
How to identify the pattern on a plant
- Locate the whole leaf. Follow its stalk back to the twig or shoot. A bud forms at the base of a whole leaf’s petiole; a leaflet does not have a bud at its own base. Buds can be hard to see, so inspect the twig rather than relying on one leaflet alone.
- Check whether the blade is continuous. If tissue connects the apparent divisions, you are looking at lobes of a simple leaf. If distinct blade units attach to a shared stalk, the leaf is compound.
- Trace the leaflet attachments. Leaflets radiating from the petiole tip indicate a palmate arrangement. Leaflets attached along an extended central rachis indicate a pinnate arrangement.
- Record other clues. Note whether leaves occur opposite, alternate or whorled on the stem, along with leaflet shape, edges and the overall shoot. Leaf division helps narrow an identification, but it does not establish a species by itself.
Montana State University Extension also recommends considering the whole leaf and twig when identifying trees: Tree Identification.
What is a rachis, and how can a pinnate leaf be further divided?
The rachis is the extension of the petiole that bears the leaflets in a pinnate leaf. Pinnate leaves can be classified by how the leaflets finish at the end of that axis:
Rank #2
- LEAF OR LEAFLET: Shows the bud-based clue used to separate a whole leaf from an individual leaflet.
- SIMPLE VS COMPOUND: Side-by-side examples contrast one-blade leaves with multi-leaflet structures for faster recognition.
- COMPOUND FORMS: Pinnately and palmately compound examples highlight leaflet arrangement, rachis, and attachment patterns.
- FIELD CLUES: Quick-check panels organize visible traits that can be reviewed during plant identification and nature study.
- BOTANY DISPLAY: Detailed botanical artwork supports plant lessons, gardening education, and repeated reference in study spaces.
- Odd-pinnate: a single terminal leaflet sits at the end of the rachis.
- Even-pinnate: a terminal pair of leaflets sits at the end.
- Bipinnate: the leaf is divided again, so leaflet-bearing side axes themselves carry leaflets. Leaves can have still further levels of division.
A leaf with three leaflets is called trifoliolate. Three leaflets alone do not prove that the arrangement is palmate: a short rachis may separate the terminal leaflet from the two lateral ones, making the structure pinnate. Virginia Tech’s botany material explains these distinctions in its leaf morphology guide.
How do palm leaves fit the distinction?
Palm leaves have a useful additional category. In UF/IFAS’s description, pinnate palm leaves have separate leaflets attached to a rachis. Palmate palm leaves have adjacent leaflets or segments joined laterally for some or most of their length. Costapalmate leaves are intermediate: their segments are joined and attached along a costa.
Rank #3
- LEAF OR LEAFLET: Shows the bud-based clue used to separate a whole leaf from an individual leaflet.
- SIMPLE VS COMPOUND: Side-by-side examples contrast one-blade leaves with multi-leaflet structures for faster recognition.
- COMPOUND FORMS: Pinnately and palmately compound examples highlight leaflet arrangement, rachis, and attachment patterns.
- FIELD CLUES: Quick-check panels organize visible traits that can be reviewed during plant identification and nature study.
- BOTANY DISPLAY: Detailed botanical artwork supports plant lessons, gardening education, and repeated reference in study spaces.
| Palm-leaf form | Structure | Examples |
|---|---|---|
| Pinnate | Separate leaflets attached along a rachis | Coconut, queen palm and date palm |
| Palmate | Adjacent segments joined laterally for some or most of their length | Mexican fan palm, windmill palm and sugar palm |
| Costapalmate | An intermediate form, with joined segments attached along a costa | Sabal species |
These palm-specific categories are described by UF/IFAS’s guide to palm morphology. They should not be applied as a substitute for the usual palmate-versus-pinnate leaflet attachment distinction in non-palm leaves.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Use leaf division as one clue, not a complete identification
Palmate or pinnate structure can help narrow down a plant, but a reliable identification also considers features such as leaf arrangement on the twig, leaflet margins and shape, and other characteristics of the shoot. Some leaf features vary within a species. For a particular plant, use a regional field guide or species-specific key alongside these structural clues; a general morphology pattern is not a species determination.
Quick Recap
Best Value
- LEAF OR LEAFLET: Shows the bud-based clue used to separate a whole leaf from an individual leaflet.
- SIMPLE VS COMPOUND: Side-by-side examples contrast one-blade leaves with multi-leaflet structures for faster recognition.
- COMPOUND FORMS: Pinnately and palmately compound examples highlight leaflet arrangement, rachis, and attachment patterns.
- FIELD CLUES: Quick-check panels organize visible traits that can be reviewed during plant identification and nature study.
- BOTANY DISPLAY: Detailed botanical artwork supports plant lessons, gardening education, and repeated reference in study spaces.
Rank #4
- LEAF OR LEAFLET: Shows the bud-based clue used to separate a whole leaf from an individual leaflet.
- SIMPLE VS COMPOUND: Side-by-side examples contrast one-blade leaves with multi-leaflet structures for faster recognition.
- COMPOUND FORMS: Pinnately and palmately compound examples highlight leaflet arrangement, rachis, and attachment patterns.
- FIELD CLUES: Quick-check panels organize visible traits that can be reviewed during plant identification and nature study.
- BOTANY DISPLAY: Detailed botanical artwork supports plant lessons, gardening education, and repeated reference in study spaces.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
