Ulmus bergmanniana var. lasiophylla
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Rosales
Family: Ulmaceae
Genus: Ulmus
Species:
U. bergmanniana
Variety:
U. b. var. lasiophylla
Trinomial name
Ulmus bergmanniana var. lasiophylla
Synonyms

Ulmus lasiophylla C. K. Schneid. (W. C. Cheng)[1]

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]

Description

The tree is distinguished by Fu (2002) as having "Leaf blade adaxially with densely curved pubescence.[3] Flowers and fruits February - April".[4]

Cultivation

Var. lasiophylla is cold hardy; in artificial freezing tests at the Morton Arboretum[5] 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

Europe

References

  1. ^ C. K. Schneid., in Sargent, (1916), Pl. Wilson 3: 241.
  2. ^ 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. [1]
  3. ^ "Ulmus bergmanniana var. lasiophylla". Herbarium catalogue. Board of Trustees of the Royal Botanic Gardens, Kew. Retrieved 17 October 2016.
  4. ^ Campbell University Herbarium specimen. Sheet labelled U. bergmanniana var. lasiophylla Schneid., flowers from Morton Arboretum (2011)
  5. ^ 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

Elm species, varieties, hybrids, hybrid cultivars and species cultivars
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