Garg Ji,
Thanks for all the distinguishing features.
Regards,
Aarti
On Sun, Feb 1, 2026 at 1:21 PM JM Garg <[email protected]> wrote:
> There are two closely related species with differences (Google AI view) as
> below:
> *Quercus palustris* (Pin Oak) and *Quercus coccinea* (Scarlet Oak) are
> closely related, deciduous North American red oaks often confused due to
> similar, deeply lobed leaves. The primary difference is habitat and
> morphology: *Q. palustris* thrives in moist/wet soils, features U-shaped
> leaf sinuses, and retains lower, drooping dead branches ("pins"). *Q.
> coccinea* prefers dry, upland sites, has C-shaped sinuses, and cleaner
> trunks.
> *Key Differences Between Quercus palustris and Quercus coccinea*
>
> - *Habitat:* *Q. palustris* (Pin Oak) thrives in floodplains, wet, and
> poorly-drained soils. *Q. coccinea* (Scarlet Oak) prefers dry, sandy,
> or rocky upland sites.
> - *Leaf Sinuses:* *Q. palustris* has deep sinuses that form a 'U'
> shape. *Q. coccinea* has deep sinuses that are more 'C' shaped or
> "closed".
> - *Leaf Underside:* *Q. palustris* has small, conspicuous tufts of
> pale orange-brown down (hair) in the vein axils. *Q. coccinea* leaves
> are generally hairless (glabrous).
> - *Branches:* *Q. palustris* is known for having many small, dead,
> downward-pointing branches that persist on the lower trunk (the "pins").
> *Q.
> coccinea* typically self-prunes better, lacking these persistent lower
> branches.
> - *Acorns:* *Q. palustris* acorns are smaller (
> mm) with a very thin, shallow, saucer-shaped cap. *Q. coccinea* acorns
> are larger (
> mm) with a deeper, bowl-shaped cap that covers about half the nut.
> - *Buds:* *Q. palustris* winter buds are small, light brown, and
> generally hairless (glabrous). *Q. coccinea* buds are covered in
> reddish-brown hairs on the top half.
> - *Growth Form:* *Q. palustris* has a distinct, often narrow pyramidal
> shape, with upper branches ascending, middle horizontal, and lower
> descending.
>
> So it should be *Quercus palustris* Münchh.
>
> ---------- Forwarded message ---------
> From: Aarti S. Khale <[email protected]>
> Date: Thursday, 10 January 2019 at 11:32:44 am UTC+5:30
> Subject: Quercus Species for ID : Atlanta,Georgia : 10JAN19 : AK-9
> To: efloraofindia <[email protected]>
>
>
> Quercus Species seen in a park.
> For Species id please.
> Aarti
>
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