Ulmus bergmanniana var. lasiophylla

Ulmus bergmanniana var. lasiophylla <small>C. K. Schneid.</small> (Hairy-leaved Bergmann's elm) is endemic to China, on mountain slopes at elevations of 2100&ndash;2900&nbsp;m in Gansu, Shaanxi, north-west Sichuan, south-east Xizang (formerly Tibet), and north-west Yunnan.

Description

The tree is distinguished by Fu (2002) as having "Leaf blade adaxially with densely curved pubescence. Flowers and fruits February - April".

Cultivation

Var. lasiophylla is cold hardy; in artificial freezing tests at the Morton Arboretum the LT50 (temp. at which 50% of tissues die) was found to be - 27.7 °C. There are no known cultivars of this taxon, nor is it known to be in commerce.

Accessions

North America

• Chicago Botanic Garden, US. No accession details; planted in West Collections Area.
• Morton Arboretum, US. Acc. no. 45&ndash;95. Collected from the wild at an unrecorded site in China.
• United States National Arboretum, Washington, D.C., US. Acc. nos. 76218, 68978.

Europe

• Glendoick Gardens, Perthshire, UK; two trees (2017), source 'SSNY 205'.
• Grange Farm Arboretum https://web.archive.org/web/20120314110413/http://www.thegardeningwebsite.co.uk/grange-farm-plants-speciality-rare-trees-shrubs-i411.html, Lincolnshire, UK. Acc. no. 1057.
• Royal Botanic Garden Edinburgh, UK. Acc. no. 19933397. Wild collected in Kunming, China, by Gothenburg Expedition.

References

External links

• efloras.org: U. bergmanniana var. lasiophylla leaves and fruit illustration
• efloras.org: U. bergmanniana var. lasiophylla description