青檀 Pteroceltis tatarinowii

Scientific Name: Pteroceltis tatarinowii Maxim.
Ref: Bull. Acad. Imp. Sci. Saint-Pétersbourg, sér. 3, 18:293. 1873
Synonym: Ulmus cavaleriei H.Lév.
English Common Name: blue sandalwood, Tara wingceltis
Chinese Common Name: 青檀 qīngtán
Family: Cannabaceae
Genus: Pteroceltis
Distribution: Mountainous regions on limestone, river and stream banks; 100-1500 m. Anhui, Fujian, S Gansu, Guangdong, Guangxi, Guizhou, Hebei, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Liaoning (Dalian), SE Qinghai, Shaanxi, Shandong, Shanxi, Sichuan, Zhejiang.
Photo: Hangzhou, Zhejiang

Trees, to 20 m tall, d.b.h. 70-100 cm or more. Bark grayish white to dark gray. Branchlets with distinct lenticels. Winter buds ovoid. Petiole 0.5-1.5 cm, pubescent; leaf blade broadly ovate to oblong, 3-10 × 2-5 cm, base oblique, margin irregularly serrate, apex acuminate; secondary veins 4-6 on each side of midvein. Nut yellowish green to yellowish brown, ± globose to oblong, 1-1.7 cm in diam., glabrous or pubescent, base truncate or cordate, apex notched; perianth and style persistent; stalk 1-2 cm; wings ± woody. Fl. Mar-May, fr. Aug-Oct. (Flora of China)