?Zelkova
Zelkova serrata
Scientific classification
Kingdom: Plantae Division: Magnoliophyta Class: Magnoliopsida Order: Rosales Family: Ulmaceae Genus: Zelkova Spach
Species
See text Image File history File links Zelkova_serrata. ... Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms (as opposed to folk taxonomy). ... Divisions Green algae Chlorophyta Charophyta Land plants (embryophytes) Non-vascular plants (bryophytes) Marchantiophyta - liverworts Anthocerotophyta - hornworts Bryophyta - mosses Vascular plants (tracheophytes) Lycopodiophyta - clubmosses Equisetophyta - horsetails Pteridophyta - true ferns Psilotophyta - whisk ferns Ophioglossophyta - adderstongues Seed plants (spermatophytes) †Pteridospermatophyta - seed ferns Pinophyta - conifers Cycadophyta - cycads Ginkgophyta - ginkgo Gnetophyta - gnetae Magnoliophyta - flowering plants... Classes Magnoliopsida - Dicots Liliopsida - Monocots The flowering plants (also called angiosperms) are a major group of land plants. ... Young castor oil plant showing its prominent two embryonic leaves (cotyledons), that differ from the adult leaves An example of a trimerous and non-eudicot flower: Magnolia Dicotyledons or dicots are a group of flowering plants whose seed typically contains two embryonic leaves or cotyledons. ... Families Barbeyaceae Cannabaceae (hemp family) Dirachmaceae Elaeagnaceae Moraceae (mulberry family) Rosaceae (rose family) Rhamnaceae (buckthorn family) Ulmaceae (elm family) Urticaceae (nettle family) For the Philippine municipality, see Rosales, Pangasinan. ... Genera Celtis - Hackberries Planera - Water-elm Ulmus - Elms Zelkova - Zelkovas Ulmaceae is a family of flowering plants that includes elms, hackberries and zelkovas. ...

Zelkova is a genus of six species of deciduous trees in the elm family Ulmaceae, native to southern Europe, and southwest and eastern Asia. They vary in size from shrubs (Z. sicula) to large trees up to 35 m tall (Z. carpinifolia). Deciduous means temporary or tending to fall off (deriving from the Latin word decidere, to fall off). ... The coniferous Coast Redwood, the tallest tree species on earth. ... Genera Celtis - Hackberries Planera - Water-elm Ulmus - Elms Zelkova - Zelkovas Ulmaceae is a family of flowering plants that includes elms, hackberries and zelkovas. ... World map showing the location of Asia. ... A broom shrub in flower A shrub or bush is a horticultural rather than strictly botanical category of woody plant, distinguished from a tree by its multiple stems and lower height, usually less than 6 m tall. ...

The name Zelkova ultimately derives from the native name of Z. carpinifolia in one or more of the languages of the Caucasus, as shown by the Georgian name, ძელქვა (dzelkva). The languages of the Caucasus are a large and extremely varied array of languages spoken by more than ten million people in the Caucasus region of Eastern Europe and Western Asia, between the Black Sea and the Caspian Sea. ...

Species

• Zelkova abelicea - Cretan Zelkova
• Zelkova carpinifolia - Caucasian Zelkova
• Zelkova serrata - Keaki or Japanese Zelkova
• Zelkova sicula - Sicilian Zelkova
• Zelkova sinica - Chinese Zelkova
• Zelkova schneideriana - Schneider's Zelkova

The Sicilian Zelkova Z. sicula, only discovered in 1991, is listed as an endangered species. The only known population comprises a small number of low shrubs suffering from severe overgrazing; the natural mature size of undamaged specimens is unknown. Binomial name Zelkova carpinifolia (Pall. ... Binomial name Zelkova serrata (Thunb. ... 1991 (MCMXCI) was a common year starting on Tuesday of the Gregorian calendar. ... The endangered Sea Otter An endangered species is a population of organisms (usually a taxonomic species), which because it is either (a) few in number or (b) threatened by changing environmental or predation parameters, it is at risk of becoming extinct. ...

Zelkova serrata and Z. carpinifolia are grown as ornamental trees. An ornamental plant is a plant species or cultivar that is grown indoors, or in gardens and parks for its amenity value, or for beauty (in its end use), rather than commercial or other value. ...

The genus Zelkova was common throughout North America and Northern Europe as late as the Pliocene. However, extensive Pleistocene glaciation has confined the genus to its present range south of the Alps and Pyrenees, and in East Asia where only local glaciation occurred. World map showing North America A satellite composite image of North America. ... Northern Europe is marked in dark blue Northern Europe is a name of the northern part of the European continent. ... The Pliocene epoch (spelled Pleiocene in some older texts) is the period in the geologic timescale that extends from 5. ... The Pleistocene epoch (pronounced like ply-stow-seen) is part of the geologic timescale. ... A glaciation (a created composite term meaning Glacial Period, referring to the Period or Era of, as well as the process of High Glacial Activity), often called an ice age, is a geological phenomenon in which massive ice sheets form in the Arctic and Antarctic and advance toward the equator. ... The West face of the Petit Dru above the Chamonix valley near the Mer de Glace. ... Central Pyrenees. ... East Asia is a subregion of Asia that can be defined in either geographical or cultural terms. ...

References and external links

• Andrews, S. (1994). Tree of the year: Zelkova. Int. Dendrol. Soc. Yearbook 1993: 11-30.
• de Spoelberch, P. (1994). Zelkova: More questions than answers. Int. Dendrol. Soc. Yearbook 1993: 30-33.
• Hunt, D. (1994). Beware of the Zelkova. Int. Dendrol. Soc. Yearbook 1993: 33-41.
• Rushforth, K. (1999). Trees of Britain and Europe. HarperCollins ISBN 0002200139
• Zelkova sicula photos
• Survivors from the Tertiary
• Zelkova sicula at IUCN