Ulmus bergmanniana var. lasiophylla

Taxobox
status = LC
name = "Ulmus bergmanniana" var. "lasiophylla"
regnum = Plantae
divisio = Magnoliophyta
classis = Magnoliopsida
ordo = Rosales
familia = Ulmaceae
genus = "Ulmus"
species = "Ulmus bergmanniana"
trinomial = "Ulmus bergmanniana" var. "lasiophylla"
trinomial_authority = C. K. Schneid.
synonyms ="Ulmus lasiophylla" C. K. Schneid. (W. C. Cheng) [C. K. Schneid., in Sargent, (1916), "Pl. Wilson" 3: 241.]

"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. [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] ]

Description

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

Cultivation

Var. "lasiophylla" is cold hardy; in artificial freezing tests at the Morton Arboretum 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.] 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 available from any nurseries.

Accessions

North America

*Chicago Botanic Garden, Glencoe, Illinois. Planted in West Collections Area.
*Morton Arboretum (acc. no. 45-95), collected from the wild at an unrecorded site in China.

Europe

*Royal Botanic Garden Edinburgh, Scotland. Acc. no. 19933397. Wild collected in Kunming, China, by Gothenburg Expedition.

References