UlmaceaeThe Elm Family

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Ulmaceae• Deciduous group with lots of

variation

• Trees and shrubs

• 15-18 genera and 150 species

• 14 trees and 2 shrubs native to North America

• Temperate to tropical environments

http://en.wikipedia.org/wiki/Ulmaceae

http://luirig.altervista.org/flora/ulmus.htm

Leaf structure• Alternate and simple• Base often oblique • Margins entire or serrate• Venation pinnate to palmate-pinnate

www.colby.edu

Flowers and Fruit• Flowers are perfect or imperfect and lack petals • Fruit are evenly winged samara or drupe

www.colby.edu

http://botany.csdl.tamu.edu/FLORA/cgi/gallery_query?q=ulmus

Ulmus americana • American elm

• Tree that shades most streets and boulevards in FM area

• Tolerates wide variety of temperatures

http://www.statesymbolsusa.org/IMAGES/Massachusetts/American-Elm-Trees.jpghttp://shade-trees.tripod.com/image/street_elms2.jpg

Celtis occidentalis• Hackberry

• Varies in size from shrub to trees (100+ feet)

• Usually found on rich, moist soils

http://plants.usda.gov/java/profile?symbol=CEOC

Other Ulmaceae examples

http://botany.csdl.tamu.edu/FLORA/WINSTON/sophora.htm

Cedar Elm (Ulmus crassifolia)

http://www.efloras.org/florataxon.aspx?flora_id=1001&taxon_id=10928

Japanese zelkova (Zelkova serrata)

Tatar Wing Celtis (Pteroceltis tatarinowii )

http://www.sheffields.com/seed_common_name/tatar%20wing%20celtis

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ReferencesWalters, Dirk., Keil, David., Murrell, Zack. 2006. Vascular Plant Taxonomy. 5th ed. U.S.: Kendall/Hunt. 283. Print.

United States Department of Agriculture-Natural Resources Conservation Service. Plant Fact Sheet. “Common Hackberry.” 1 Feb 2002. [Internet]

Websites near all photos