This page is based on the 1993 Jepson Manual.
Please see the Jepson eFlora for up-to-date information about California vascular plants.
    Jepson Flora Project: Jepson Interchange    

 
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
Print edition is available from the University of California Press

Manual image The second edition of The Jepson Manual (2012) is available from the University of California Press
See also the Jepson eFlora, which parallels the Second Edition

ULMACEAE

ELM FAMILY

Dieter H. Wilken

Shrub or tree, often monoecious
Leaves simple, generally alternate, generally 2-ranked, short-petioled; stipules deciduous; blade base often oblique, veins pinnate
Inflorescence: cyme, clustered, axillary; flowers 1–few; bracts 0
Flower radial; sepals 4–6, free to fused; corolla 0; stamens 4–6, opposite sepals; ovary superior, chamber 1, ovule 1, style branches generally 2
Fruit: drupe or winged nutlet
Genera in family: ± 15 genera, ± 150 species: temp to tropical; some cultivated for ornamental (Celtis , Ulmus , Zelkova ), some used for wood, fibers (especially Ulmus )
Reference: [Elias 1970 J Arnold Arbor 51:18–40]
Recent taxonomic note: Celtis recently treated in Celtidaceae [Angiosperm Phylogeny Group 1998 Ann Missouri Bot Gard 85:531–553; Wiegrefe & Sytsma 1998 Plant Syst Evol 210:249–270]
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