Ulmus bergmanniana var. lasiophylla
| Ulmus bergmanniana var. lasiophylla | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Rosids |
| Order: | Rosales |
| Family: | Ulmaceae |
| Genus: | Ulmus |
| Species: | Ulmus bergmanniana |
| Trinomial name | |
| Ulmus bergmanniana var. lasiophylla C. K. Schneid. | |
| Synonyms | |
|
Ulmus lasiophylla C. K. Schneid. (W. C. Cheng)[1] | |
Ulmus bergmanniana var. lasiophylla C. K. Schneid. is endemic to China, on mountain slopes between 2100 m and 2900 m elevation in the provinces of Gansu, Shaanxi, north-west Sichuan, south-east Xizang (formerly Tibet), and north-west Yunnan. [2]
Description
The tree is distinguished by Fu et al. (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. No accession details; planted in West Collections Area.
- Morton Arboretum. Acc. no. 45-95. Collected from the wild at an unrecorded site in China.
- U S National Arboretum , Washington, D.C., USA. Acc. nos. 76218, 68978.
Europe
- Grange Farm Arboretum , Sutton St James, Spalding, Lincs., UK. Acc. no. 825.
- Royal Botanic Garden Edinburgh, Scotland. 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.