Ulmus glaucescens var. glaucescens explained

Ulmus glaucescens var. glaucescens is a Chinese tree endemic to mountain slopes at elevations of 2000 - 2400 m in the provinces of Gansu, Hebei, Henan, Liaoning, Nei Mongol, Ningxia, eastern Qinghai, Shaanxi, Shandong, and Shanxi.

Description

The variety is distinguished by a "Samara glabrous except stigmatic surface pubescence in notch. Fl. and fr. March - May".^[1]

Pests and diseases

No information available.

Cultivation

The tree is very rare in cultivation beyond China.

Accessions

North America

• Morton Arboretum, US. Acc. details not known.

Europe

• Grange Farm Arboretum, Lincolnshire, UK. Two grafted trees from cuttings ex Morton. Acc. no. 1130.

Notes and References

1. Fu, L., Xin, Y. & Whittemore, A. (2002). Ulmaceae, in Wu, Z. & Raven, P. (eds) Flora of China, Vol. 5 (Ulmaceae through Basellaceae). Science Press, Beijing, and Missouri Botanical Garden Press, St. Louis, USA. http://flora.huh.harvard.edu/china/PDF/PDF05/Ulmus.pdf