Ulmus bergmanniana var. lasiophylla
Ulmus bergmanniana var. lasiophylla C. K. Schneid. (Hairy-leaved Bergmann's elm) is endemic to China, on mountain slopes at elevations of 2100–2900 m in Gansu, Shaanxi, north-west Sichuan, south-east Xizang (formerly Tibet), and north-west Yunnan.[2]
| Ulmus bergmanniana var. lasiophylla | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Rosales |
| Family: | Ulmaceae |
| Genus: | Ulmus |
| Species: | |
| Variety: | U. b. var. lasiophylla |
| Trinomial name | |
| Ulmus bergmanniana var. lasiophylla | |
| Synonyms | |
|
Ulmus lasiophylla C. K. Schneid. (W. C. Cheng)[1] | |
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[3] 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. 45–95. 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 , Lincolnshire, UK. Acc. no. 1057.
- Royal Botanic Garden Edinburgh, UK. Acc. no. 19933397. Wild collected in Kunming, China, by Gothenburg Expedition.
References
- C. K. Schneid., in Sargent, (1916), Pl. Wilson 3: 241.
- 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.
- Shirazi, A. M. & Ware, G. H. (2004). Evaluation of New Elms from China for Cold Hardiness in Northern Latitudes. International Symposium on Asian Plant Diversity & Systematics 2004, Sakura, Japan.
External links
- efloras.org: U. bergmanniana var. lasiophylla leaves and fruit illustration
- efloras.org: U. bergmanniana var. lasiophylla description
- Campbell University Herbarium specimen. Sheet labelled U. bergmanniana var. lasiophylla Schneid., flowers from Morton Arboretum (2011)
- "Ulmus bergmanniana var. lasiophylla". Herbarium catalogue. Board of Trustees of the Royal Botanic Gardens, Kew. Retrieved 17 October 2016.
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