Ulmus laevis var. celtidea | |
---|---|
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Rosids |
Order: | Rosales |
Family: | Ulmaceae |
Genus: | Ulmus |
Species: | |
Variety: | U. l. var. celtidea
|
Trinomial name | |
Ulmus laevis var. celtidea |
Ulmus laevis var. celtidea Rogow. [: like Celtis, the leaves] is a putative variety of European White Elm first described by Rogowicz, [1] who found the tree in 1856 along the river Dnjepr [2] near Chernihiv in what is now northern Ukraine. The type specimen is held at the National Herbarium of Ukraine. [3] The variety was first named as Ulmus pedunculata var. celtidea. [2] Litvinov (1908) considered it a species, calling it Ulmus celtidea Litv., a view not upheld by other authorities. [4]
Similar trees were later found near Briansk in Oryol Oblast, but featured larger leaves. [5]
The leaves are oblong-lanceolate, but only about 25 millimetres (1 in) in length, long-acuminate at the apex, and coarsely, sharply serrate, cuneate and sub-equal at the base. The samarae were also notably smaller than the species. [6] A 1906 herbarium specimen (leaves and fruit) in the Berlin Botanical Museum labelled U. celtidea Litv., from Orel province, Russia, has, however, leaves to 2 or 3 inches. [7]
One specimen which grew at the Strona Arboretum, University of Life Sciences, Warsaw, Poland, (as Ulmus celtidea Litv.) died circa 2006. The tree was grown from seed collected from a tree at the Arboretum of the Forest-Technical Academy in St. Petersburg in 1961; it is not known whether this source is still alive. No cultivars or hybrid cultivars are known.
Ulmus laevis var. celtidea | |
---|---|
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Rosids |
Order: | Rosales |
Family: | Ulmaceae |
Genus: | Ulmus |
Species: | |
Variety: | U. l. var. celtidea
|
Trinomial name | |
Ulmus laevis var. celtidea |
Ulmus laevis var. celtidea Rogow. [: like Celtis, the leaves] is a putative variety of European White Elm first described by Rogowicz, [1] who found the tree in 1856 along the river Dnjepr [2] near Chernihiv in what is now northern Ukraine. The type specimen is held at the National Herbarium of Ukraine. [3] The variety was first named as Ulmus pedunculata var. celtidea. [2] Litvinov (1908) considered it a species, calling it Ulmus celtidea Litv., a view not upheld by other authorities. [4]
Similar trees were later found near Briansk in Oryol Oblast, but featured larger leaves. [5]
The leaves are oblong-lanceolate, but only about 25 millimetres (1 in) in length, long-acuminate at the apex, and coarsely, sharply serrate, cuneate and sub-equal at the base. The samarae were also notably smaller than the species. [6] A 1906 herbarium specimen (leaves and fruit) in the Berlin Botanical Museum labelled U. celtidea Litv., from Orel province, Russia, has, however, leaves to 2 or 3 inches. [7]
One specimen which grew at the Strona Arboretum, University of Life Sciences, Warsaw, Poland, (as Ulmus celtidea Litv.) died circa 2006. The tree was grown from seed collected from a tree at the Arboretum of the Forest-Technical Academy in St. Petersburg in 1961; it is not known whether this source is still alive. No cultivars or hybrid cultivars are known.