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Karyomorphology and relationships of Celtidaceae and Ulmaceae (Urticales)
Journal of Plant Research, 1990Based on karyomorphological features, six (examined in this study) of nine genera of Celtidaceae are divided into three groups: 1)Celtis, Parasponia, Pteroceltis andTrema; 2)Aphananthe; 3)Gironniera, and six genera of Ulmaceae into two: 1)Holoptelea andPhyllostylon; 2)Hemiptelea, Planera, Ulmus andZelkova.
Peter H. Raven +2 more
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Grana, 1983
Abstract Thirty-two species from 17 genera were examined by scanning electron microscopy and representatives from each subfamily were examined by transmission electron microscopy. The treatment of Ulmaceae based on pollen grains is consistent with the treatment of the family presented by I. A. Grudzinskaya.
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Abstract Thirty-two species from 17 genera were examined by scanning electron microscopy and representatives from each subfamily were examined by transmission electron microscopy. The treatment of Ulmaceae based on pollen grains is consistent with the treatment of the family presented by I. A. Grudzinskaya.
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Ulmus americana (Ulmaceae) is a polyploid complex
American Journal of Botany, 2011• Premise of the study: Exotic diseases are threatening many North American tree species, and management of diseases requires understanding the biology of the host as well as the pathogen. Ulmus americana is a widespread dominant tree of eastern North America that has been widely planted as an ornamental and shade tree.
Alan T, Whittemore, Richard T, Olsen
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2000
Family Ulmaceae is represented in Somalia by two genera, i.e. Celtis including two species, and Trema including one species. A description of the species and ecological and distributive data are furnished.
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Family Ulmaceae is represented in Somalia by two genera, i.e. Celtis including two species, and Trema including one species. A description of the species and ecological and distributive data are furnished.
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