Biology:Ulmus bergmanniana var. lasiophylla

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Short description: Variety of tree

Ulmus bergmanniana var. lasiophylla
Scientific classification edit
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
C. K. Schneid.
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

  • 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 [2], Lincolnshire, UK. Acc. no. 1057.
  • Royal Botanic Garden Edinburgh, UK. Acc. no. 19933397. Wild collected in Kunming, China, by Gothenburg Expedition.

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". Board of Trustees of the Royal Botanic Gardens, Kew. http://apps.kew.org/herbcat/getImage.do?imageBarcode=K000852642. 
  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

Wikidata ☰ Q7879425 entry



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