# Which oak is this leaf? Telling the eastern oaks apart by lobes, bristles, teeth and the underside

> A leaf chart for 41 oaks: how to tell red oak leaves from white oak leaves, which oaks have no lobes or only teeth, and why the hairs beneath settle hard cases.

Published 2026-10-21. Tags: Oaks, How trees work. By Blue Whale Trees, a native tree nursery in the United States. Web version: https://bluewhaletrees.com/articles/which-oak-is-this-leaf/

Look at the tips first. A bristle at the end of each lobe, tooth or leaf tip marks the red oak group. Rounded lobes or teeth with no bristle mark the white oak group. The outline then narrows the group to a few species: no lobes, teeth without lobes, or lobes cut shallow or deep. Where two oaks share an outline, the underside decides, from the star-shaped hairs of post oak to the tufts in the vein angles of Shumard oak.

![Two brown northern red oak leaves with pointed, bristle-tipped lobes on the forest floor among acorns](https://bluewhaletrees.com/img/articles/which-oak-is-this-leaf-1-1000.jpg?v=cba45e20 "Fallen northern red oak leaves and acorns in Duke Forest, Durham, North Carolina, on November 6, 2011. Each pointed lobe ends in a bristle.")
*Photo: Dcrjsr, [CC BY 3.0](https://creativecommons.org/licenses/by/3.0) ([source](https://commons.wikimedia.org/wiki/File%3AQuercus_rubra_N_red_oak_fallen_leaves.jpg))*

## Red oak or white oak: find the bristles

A bristle is the end of a leaf vein that runs out past the edge. Every lobe of a red oak leaf ends in one or more. On the red oaks with no lobes, willow oak and shingle oak among them, a single bristle still tips the leaf. A white oak group leaf has no bristle anywhere, and its lobes end round. That split comes first:

> "Learning how to make this initial separation can simplify identification by automatically eliminating the species in the other group." (Missouri Department of Conservation, *Oaks*)

When a tip is torn, the twigs confirm the group. Every red oak we grow but runner oak ripens its acorns over two seasons, so in summer its twigs carry young acorns of two sizes, where a white oak carries one crop. The groups' other differences are in [red oaks and white oaks](https://bluewhaletrees.com/articles/red-oaks-and-white-oaks/index.html.md).

![Single white oak leaf hanging in sunlight, its rounded lobes and deep sinuses lit from behind](https://bluewhaletrees.com/img/articles/which-oak-is-this-leaf-2-1000.jpg?v=2f9404ef "A white oak leaf at the Chadwick Arboretum of Ohio State University in Columbus on August 2, 2018. Every lobe ends round, with no bristle.")
*Photo: Dan Keck from Ohio, [CC0](https://creativecommons.org/publicdomain/zero/1.0/deed.en) ([source](https://commons.wikimedia.org/wiki/File%3AWhite_Oak_(43775887872).jpg))*

## Leaves with no lobes

These oaks grow leaves with no lobes, or a few shallow ones near the tip. The live oaks, laurel, myrtle and sandhill oak keep theirs green through winter. On the red oaks a bristle still tips the leaf, so check the tip before the shape. We grow all twelve:

| Oak | Group | Shape and edge | Underside | Length, inches |
| --- | --- | --- | --- | --- |
| [Arkansas oak](https://bluewhaletrees.com/plants/arkansas-oak/index.html.md) | Red | Broad near the tip; may have 2–3 shallow lobes | Vein-angle tufts | 2–6 |
| [Bluejack oak](https://bluewhaletrees.com/plants/bluejack-oak/index.html.md) | Red | Narrow, blue-green | White and woolly | 2–4 |
| [Dwarf live oak](https://bluewhaletrees.com/plants/dwarf-live-oak/index.html.md) | White | Broad and toothed low on a shoot, narrow and smooth near its tip | Usually hairy | 1–3 |
| [Laurel oak](https://bluewhaletrees.com/plants/laurel-oak/index.html.md) | Red | Narrow, leathery | Paler, hairless | 1–3 |
| [Live oak](https://bluewhaletrees.com/plants/live-oak/index.html.md) | White | Oblong, leathery; edge smooth or spiny, rolled under | Pale, finely hairy | 2–5 |
| [Myrtle oak](https://bluewhaletrees.com/plants/myrtle-oak/index.html.md) | Red | Small and stiff; edge rolled under | Vein-angle tufts | ½–2 |
| [Oglethorpe oak](https://bluewhaletrees.com/plants/oglethorpe-oak/index.html.md) | White | Narrow, smooth-edged | Pale, velvety | 3–7 |
| [Plateau live oak](https://bluewhaletrees.com/plants/plateau-live-oak/index.html.md) | White | Oblong, leathery; edge smooth or spiny | Much paler, fuzzy | 1–3 |
| [Runner oak](https://bluewhaletrees.com/plants/runner-oak/index.html.md) | Red | Oblong; edge rolled under | Gray-brown hairs all over | 1–4 |
| [Sandhill oak](https://bluewhaletrees.com/plants/sandhill-oak/index.html.md) | Red | Oval; edge strongly rolled under | Yellow-scurfy | 2–3½ |
| [Shingle oak](https://bluewhaletrees.com/plants/shingle-oak/index.html.md) | Red | Oblong, smooth-edged | Paler, downy | 3–7 |
| [Willow oak](https://bluewhaletrees.com/plants/willow-oak/index.html.md) | Red | Narrow like a willow's, smooth-edged | Pale, hairless | 2–5 |

Size sorts the narrow ones. Shingle oak's leaf is wider than willow oak's, and sandhill oak's leaves are larger than myrtle oak's. Laurel oak's bristle and bare underside set it apart from the live oaks.

![Narrow, smooth-edged willow oak leaves around a twig holding two ripe acorns in thin saucer cups](https://bluewhaletrees.com/img/articles/which-oak-is-this-leaf-3-1000.jpg?v=d6c73199 "Willow oak on September 29, 2007: narrow leaves with smooth edges, and acorns under the thin, saucer-like cups of a red oak.")
*Photo: Franklin Bonner, USFS (ret.), Bugwood.org, [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0) ([source](https://commons.wikimedia.org/wiki/File%3AQuercus_phellos_5424061.jpg))*

## Teeth or waves but no lobes

Five white oaks grow leaves edged with teeth or waves instead of lobes. The teeth may be sharp, but none ends in a bristle. We grow all five:

| Oak | Teeth | Underside | Length, inches |
| --- | --- | --- | --- |
| [Chestnut oak](https://bluewhaletrees.com/plants/chestnut-oak/index.html.md) | Rounded and even | Paler, nearly smooth | 4–6 |
| [Chinquapin oak](https://bluewhaletrees.com/plants/chinquapin-oak/index.html.md) | Coarse and sharp, 8–13 a side | Paler, with gray hairs | 4–8 |
| [Dwarf chinquapin oak](https://bluewhaletrees.com/plants/dwarf-chinquapin-oak/index.html.md) | Wavy and blunter, 4–8 a side | Much paler, velvety | 1½–6 |
| [Swamp chestnut oak](https://bluewhaletrees.com/plants/swamp-chestnut-oak/index.html.md) | Large, round and blunt | Whitish, velvety | 4–8 |
| [Swamp white oak](https://bluewhaletrees.com/plants/swamp-white-oak/index.html.md) | Large and blunt, or shallow lobes | Silvery white, velvety | 3–7 |

The four chestnut-leaved oaks, all but swamp white oak, are hard to tell apart by teeth alone, so read the hairs and acorns too. Dwarf chinquapin oak stays a shrub that spreads into colonies, while chinquapin oak grows into a tree that keeps to limestone. Swamp white oak's crown flashes pale in the wind before a summer storm.

![Whorl of large swamp white oak leaves seen from above, their edges cut into big, round, blunt teeth](https://bluewhaletrees.com/img/articles/which-oak-is-this-leaf-7-1000.jpg?v=854ce7d9 "Swamp white oak on October 21, 2026. Its teeth are large, round and blunt, and none ends in a bristle.")
*Photo: Blue Whale Trees*

## Lobes with bristles

All of these are red oaks. Count the lobes, then see how far the sinuses, the gaps between lobes, cut toward the midrib. We grow all fourteen:

| Oak | Lobes | Underside | Length, inches |
| --- | --- | --- | --- |
| [Bear oak](https://bluewhaletrees.com/plants/bear-oak/index.html.md) | 3–9, shallow | Thickly hairy | 2–5 |
| [Black oak](https://bluewhaletrees.com/plants/black-oak/index.html.md) | 5–7, deep in sun, shallow in shade | Fuzzy, with vein-angle tufts | 4–10 |
| [Blackjack oak](https://bluewhaletrees.com/plants/blackjack-oak/index.html.md) | 3, shallow, at the end of a broad bell | Tan to brown hairs | 5–8 |
| [Cherrybark oak](https://bluewhaletrees.com/plants/cherrybark-oak/index.html.md) | 5–11, even, at right angles to the midrib | Whitish to grayish hairs | 5–8 |
| [Georgia oak](https://bluewhaletrees.com/plants/georgia-oak/index.html.md) | 3–7, irregular | Vein-angle tufts | 2–5 |
| [Maple-leaf oak](https://bluewhaletrees.com/plants/maple-leaf-oak/index.html.md) | 5–7; the leaf often wider than long | Smooth or tufted | 3–5½ |
| [Northern pin oak](https://bluewhaletrees.com/plants/northern-pin-oak/index.html.md) | 5–7, sinuses past halfway | Mostly hairless | 3–6 |
| [Northern red oak](https://bluewhaletrees.com/plants/northern-red-oak/index.html.md) | 7–11, sinuses a third to half way | Smooth, a few small tufts | 5–9 |
| [Nuttall oak](https://bluewhaletrees.com/plants/nuttall-oak/index.html.md) | 5–7, uneven; sinuses deep | Vein-angle tufts | 3–7 |
| [Pin oak](https://bluewhaletrees.com/plants/pin-oak/index.html.md) | 5–9, sinuses nearly to the midrib | Smooth, with vein-angle tufts | 3–6 |
| [Shumard oak](https://bluewhaletrees.com/plants/shumard-oak/index.html.md) | 5–9, sinuses past halfway | Smooth, prominent tufts | 4–8 |
| [Southern red oak](https://bluewhaletrees.com/plants/southern-red-oak/index.html.md) | 3 on young trees, or 5–7 with a long end lobe | Matted light brown to grayish hairs | 5–9 |
| [Texas red oak](https://bluewhaletrees.com/plants/texas-red-oak/index.html.md) | 7–9 | Small tufts or none | 2–4 |
| [Turkey oak](https://bluewhaletrees.com/plants/turkey-oak/index.html.md) | 3–7, like a turkey's foot | Vein-angle tufts | 4–8 |

### Sinus depth

Northern red oak's sinuses reach a third to half way to the midrib, Shumard oak's past halfway, and pin oak's nearly all the way. Pin oak's main lobes form a U. Scarlet oak, which we do not grow, looks like pin oak but has deep notches rounded like a C.

![Northern red oak leaves from above, each pointed lobe tipped with a bristle, the sinuses cut about halfway](https://bluewhaletrees.com/img/articles/which-oak-is-this-leaf-5-1000.jpg?v=8fdb758b "Northern red oak on May 24, 2024. Every lobe ends in a bristle, and the sinuses reach a third to half way to the midrib.")
*Photo: Blue Whale Trees*

### Telling outlines

Southern red oak's leaf ends in a long middle lobe, and young trees often carry three-lobed leaves. Cherrybark oak's evenly spaced lobes trace a pagoda, the outline behind its botanical name. Turkey oak's leaves hang edge-on to the sun. Texas red oak's leaves look much like Nuttall oak's, but the two do not grow wild in the same places.

## Rounded lobes, no bristles

These white oaks have lobed leaves. We grow all ten:

| Oak | Lobes | Underside | Length, inches |
| --- | --- | --- | --- |
| [Bluff oak](https://bluewhaletrees.com/plants/bluff-oak/index.html.md) | 3–7, shallow, rounded | Paler, nearly bare when mature | 3–7 |
| [Boynton oak](https://bluewhaletrees.com/plants/boynton-oak/index.html.md) | 3 broad lobes near the tip, or 3–5 rounded | Gray or silvery, densely hairy | 2–4 |
| [Bur oak](https://bluewhaletrees.com/plants/bur-oak/index.html.md) | Many; two middle sinuses nearly reach the midrib | Pale, downy | 6–12 |
| [Chapman oak](https://bluewhaletrees.com/plants/chapman-oak/index.html.md) | Wavy, or 3–5 rounded lobes near the tip | Grayish or yellowish | 1–3 |
| [Delta post oak](https://bluewhaletrees.com/plants/delta-post-oak/index.html.md) | 2–3 shallow lobes a side, no cross | Grayish, a few star-shaped hairs | 3–5 |
| [Durand oak](https://bluewhaletrees.com/plants/durand-oak/index.html.md) | Very irregular: none, teeth or up to 7 shallow lobes | Silvery with minute star-shaped hairs | 2–5 |
| [Overcup oak](https://bluewhaletrees.com/plants/overcup-oak/index.html.md) | 5–9, irregular, lyre-shaped | Whitish, hairy | 3–10 |
| [Post oak](https://bluewhaletrees.com/plants/post-oak/index.html.md) | 3–5; the square middle pair makes a cross | Star-shaped hairs | 4–10 |
| [Sand post oak](https://bluewhaletrees.com/plants/sand-post-oak/index.html.md) | 3–5, rounded; middle pair somewhat square | Pale, downy | 4–6 |
| [White oak](https://bluewhaletrees.com/plants/white-oak/index.html.md) | 7–10, rounded, finger-like | Whitish, hairless | 4–9 |

Bluff oak is often mistaken for Durand oak, or for water oak, a red oak with leaves of the same shape that we do not grow. Young Durand oak leaves pass for water oak too.

![A post oak leaf with two square middle lobes spread at right angles, forming a cross, over dry ground](https://bluewhaletrees.com/img/articles/which-oak-is-this-leaf-4-1000.jpg?v=00775e81 "Post oak in Wharton State Forest, New Jersey, on September 23, 2024. The square middle lobes make the cross the tree is known by.")
*Photo: Famartin, [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0) ([source](https://commons.wikimedia.org/wiki/File%3A2024-09-23_11_55_07_Post_Oak_leaf_along_the_Mullica_River_Trail_and_Mullica_River_Road_within_Wharton_State_Forest_in_Washington_Township%2C_Burlington_County%2C_New_Jersey.jpg))*

Post oak's cross is the mark people know it by, but not every tree shows it, and the hairs beneath are the surer test.

## The underside settles the hard cases

Turn the leaf over. Many of the hairs that name an oak show under a hand lens at ten or fifteen times, and the Flora of North America trusts them over the outline:

> "Although these microscopic characters may seem intimidating, the alternative characters of leaf shape and dentition, so often used in the field, are unreliable in many cases." (Flora of North America, *Quercus*)

The hairs settle the common confusions:

- **Red or white.** Tufts of hair in the vein angles mark many red oaks, and the white oak group shows no noticeable tufts.
- **Post oak.** Star-shaped hairs beneath, and a top that feels like fine sandpaper.
- **Swamp chestnut and chestnut oak.** Swamp chestnut oak is felty to the touch beneath, where chestnut oak looks smooth.
- **Shumard and northern red oak.** Shumard oak carries prominent tufts in the vein angles, and northern red oak a few small ones.
- **Southern red and cherrybark oak.** Both are hairy across the underside, where northern red, Shumard and pin oak are smooth but for their tufts.
- **The live oaks.** A dense coat of minute hairs whitens the underside, though shade leaves stay light green and nearly bare.

![A hand turning over a swamp white oak leaf to show its silvery white underside and raised yellow veins](https://bluewhaletrees.com/img/articles/which-oak-is-this-leaf-6-1000.jpg?v=37bed0f7 "Swamp white oak turned over on October 21, 2026. Its underside is silvery white and velvety, the two-tone leaf that sets it apart from the chestnut oaks.")
*Photo: Blue Whale Trees*

## Leaves that mislead

One tree grows several kinds of leaf, since shape changes with the leaf's place in the crown, its light and its age. A shade leaf is larger, thinner and less deeply lobed than a sun leaf. A black oak's sinuses run deep at the top of the crown and shallow inside it. Gather several mature leaves from the sunny outside of the crown, on twigs with buds. Why a tree grows both kinds is in [sun leaves and shade leaves](https://bluewhaletrees.com/articles/sun-leaves-and-shade-leaves/index.html.md).

Sprouts, saplings and the second flush of summer growth bend the rules too. Bluejack oak can grow lobes and extra bristles there, and laurel oak up to ten bristles. Even a plateau live oak sucker can carry spiny teeth. Black oak varies even beneath:

> "In some growing areas, the undersides have a short tuft of hairs at the base of major veins. In other areas, the underside may be covered in short whitish hairs." (NC State Extension Gardener Plant Toolbox, *Quercus velutina*)

Oaks cross in the wild only within their own group, so a hybrid stays on its side of the bristle test. Most hybrids are single odd trees or small scattered groups. Bur oak and swamp white oak cross often where they meet, and the hybrids have more deeply lobed leaves than swamp white oak.

In winter many oaks keep dried brown leaves on their lower branches, the habit called [marcescence](https://bluewhaletrees.com/articles/glossary/index.html.md#marcescence). Young pin oaks hold theirs all winter.

## When the leaf is not enough

A second part of the tree settles what the leaf cannot:

- **The acorn.** Its length and its cup name most oaks, as [which oak dropped this acorn](https://bluewhaletrees.com/articles/which-oak-dropped-this-acorn/index.html.md) shows.
- **The bark.** Mature white oak bark is scaly or papery, chestnut oak's deep ridges aside, and red oak bark is smooth or furrowed.
- **The twig.** An oak ends each twig in a cluster of buds, which [winter identification](https://bluewhaletrees.com/articles/winter-tree-identification/index.html.md) reads once the leaves are down.
- **A photograph.** Send a question with photographs of both sides of a leaf through the [support page](https://bluewhaletrees.com/support/index.html.md).

Blue Whale Trees grows every oak in the four tables from seed. The common ones are in [Classic Oaks](https://bluewhaletrees.com/shop/classic-oaks/index.html.md), and cherrybark and swamp chestnut oak are [Superior Specimen Lines](https://bluewhaletrees.com/shop/specimens/index.html.md). The rest are in [Rare and Uncommon Oaks](https://bluewhaletrees.com/shop/rare-oaks/index.html.md). To choose one for your ground, [which oak to plant](https://bluewhaletrees.com/articles/which-oak-to-plant/index.html.md) matches the species to the site.

## Common questions

### How do you identify an oak tree by its leaves?

Look for bristles at the tips, which mark the red oak group, then at the outline and the hairs beneath. Use mature leaves from the sunny outside of the crown, since shade leaves are larger and less deeply lobed.

### What is the difference between red oak and white oak leaves?

Red oak leaves end each lobe, tooth or tip in a bristle. White oak leaves have rounded lobes or teeth with no bristle, and no noticeable tufts of hair in the vein angles beneath.

### Do all oaks have lobed leaves?

No. Willow, shingle, laurel, live and Oglethorpe oak grow leaves without lobes, and the chestnut-leaved oaks have teeth instead.

### What does a post oak leaf look like?

A thick leaf with three to five rounded lobes, the square middle pair making it look like a cross. It has star-shaped hairs beneath and a top that feels like fine sandpaper.

### What does a bur oak leaf look like?

A leaf 6 to 12 inches long whose two middle sinuses nearly reach the midrib, with lobes near the tip shaped like a crown. It grows alternately along the twig and is pale and downy beneath.

## Sources

- [Quercus](http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=127839): Flora of North America, vol. 3 (Kevin C. Nixon), with the species treatments of the oaks in the tables: the quotation on leaf shape and the hairs, hairs seen under a hand lens, acorns of two sizes on red oak twigs and runner oak's one-season acorns, bark by group, mature sun leaves on budded twigs, hybrids only within a group and mostly single trees, each species' blade, margin and underside, post oak's cross not shown by every tree, felty swamp chestnut and smooth chestnut oak, juvenile and second-flush leaves, and the bur and swamp white oak hybrids.
- [Oaks](https://mdc.mo.gov/discover-nature/field-guide/oaks): Missouri Department of Conservation field guide, with its pages for black, blackjack, bur, cherrybark, chinkapin, dwarf chestnut, northern red, Nuttall's, overcup, pin, post, scarlet, shingle, Shumard, southern red, swamp chestnut, swamp white, white and willow oak: the quotation on separating the groups, bristles as vein ends and on unlobed red oak leaves, no vein-angle tufts in the white oak group, leaf shape varying on one tree, dead leaves held through winter, the leaf lengths and undersides of those oaks, shingle oak wider than willow oak, and cherrybark oak's pagoda outline.
- [Quercus velutina](https://plants.ces.ncsu.edu/plants/quercus-velutina/): NC State Extension Gardener Plant Toolbox, with its pages for cherrybark and turkey oak: the quotation on black oak's undersides, cherrybark oak's grayish-white hairs, and turkey oak's leaves shaped like a turkey's foot.
- [White oak](https://dendro.cnre.vt.edu/dendrology/syllabus/factsheet.cfm?ID=35): Virginia Tech Dendrology, with the fact sheets for bear, black, blackjack, bluejack, bluff, bur, cherrybark, chestnut, chinkapin, Darlington, Durand white, dwarf chinquapin, Georgia, live, northern pin, northern red, Nuttall, Oglethorpe, overcup, pin, post, running, sand post, scarlet, shingle, Shumard, southern red, swamp chestnut, swamp white, Texas live, turkey and willow oak: the shape, lobes, sinuses, margin, underside and length of each leaf, black oak's sun and shade leaves, scarlet oak as a pin oak look-alike, and willow oak's saucer-like cups.
- [shade leaves](https://www.usanpn.org/taxonomy/term/823): USA National Phenology Network: shade leaves larger, thinner and less deeply lobed than sun leaves on the same plant.

## Related

- Next step: [See the catalog](https://bluewhaletrees.com/shop/index.html.md?q=oak)
- [Which oak dropped this acorn? Telling the eastern oaks apart by acorn size, cap and shape](https://bluewhaletrees.com/articles/which-oak-dropped-this-acorn/index.html.md)
- [Which oak to plant: the fastest, the first to bear, the biggest acorns, and oaks for small yards, wet ground and deer](https://bluewhaletrees.com/articles/which-oak-to-plant/index.html.md)
- [Winter identification: telling native trees apart by bark, buds and twigs](https://bluewhaletrees.com/articles/winter-tree-identification/index.html.md)
- [Red oaks and white oaks, and where each belongs](https://bluewhaletrees.com/articles/red-oaks-and-white-oaks/index.html.md)