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|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Ulmaceae||View Description||Dichotomous Key|
|Genus: Ulmus||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Ulmus americana L.
Habit: To 35 m; bark split into ridges that mostly curve together at their ends. Stem: corky outgrowths on branches 0; winter buds red-brown, conical or narrowly ovoid, +- pubescent. Leaf: 8.6--12.5 cm, 4.2--7 cm wide, elliptical or occasionally oblong, acuminate, generally slenderly so, margins strongly double-serrate, abaxial surface sparsely long-hairy on blade and veins, hairs tufted in vein axils. Inflorescence: flower, fruit before leaves in spring; pedicel 7--17 mm, slender. Fruit: 0.9--1.3 cm, 0.6--0.8 cm wide, elliptical or oblong, tan, margins densely ciliate, surfaces glabrous.
Ecology: Seeding along disturbed streambanks, or spreading by root suckers near old plantings; Elevation: 60--700 m. Bioregional Distribution: ScV, SCo; Distribution Outside California: native to eastern United States. Flowering Time: Feb--Mar
eFlora Treatment Author: Alan T. Whittemore
Jepson Online Interchange
Previous taxon: Ulmus
Next taxon: Ulmus minor
Citation for this treatment: Alan T. Whittemore 2017. Ulmus americana, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=47473, accessed on March 28, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on March 28, 2017.