Pteroceltis tatarinowii

{{Short description|Species of flowering plants belonging to the hop, hemp, and hackberry family}}

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|image=Pteroceltis tatarinowii - Morris Arboretum - DSC00350.JPG

|image_caption=

|genus=Pteroceltis

|species=tatarinowii

|authority=Maxim.

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Pteroceltis tatarinowii a species of tree endemic to China and the only extant member of the genus Pteroceltis.{{cite journal |last1=Zhang |first1=Y. |last2=Wang |first2=G. |last3=Zhou |first3=J. |last4=Zhou |first4=X. |last5=Li |first5=P. |last6=Wang |first6=Z. |year=2019 |title=The first complete chloroplast genome sequence of Pteroceltis tatarinowii (Ulmaceae), an endangered tertiary relict tree endemic to China |journal=Mitochondrial DNA Part B |volume=4 |pages=487–488 |doi=10.1080/23802359.2018.1544861 |doi-access=free}} Common names include blue sandalwood, wingceltis, Tatar-wingceltis or qing tan ({{zh|c={{linktext|青|檀}}|p=qīngtán}}). Trees grow to {{convert|20|m|ft|abbr=on}} tall and are used for timber, the bark fiber to make Xuan paper, and oil is extracted from its seeds.{{Cite web |url=https://www.chinaculturetour.com/huangshan/xuan-paper-making-technique.htm |title=Introduction to the Xuan Paper Making in Anhui China. |last= |first= |date=2019 |website=China Culture Tour.com |archive-url= |archive-date= |access-date=2019-12-17}} Seeds were collected and brought to America by Frank Meyer and given to the USDA in 1907. One of those seeds grew into a mature tree at the Morris Arboretum outside of Philadelphia, PA.