| Ulmus × hollandica 'Haarlemensis' | |
|---|---|
 'Haarlemensis' before 1912 | |
| Hybrid parentage | U. glabra × U. minor |
| Cultivar | 'Haarlemensis' |
| Origin | Netherlands |
The elm cultivar Ulmus × hollandica 'Haarlemensis', said to have been grown from seed c.1880 from a hybrid parent tree, was first listed by Springer as U. campestris haarlemensis in 1912.[1][2]
Description
[edit]A slow-growing tree, forming an unbroken, broad pyramidal crown, with small, glossy, dark-green leaves persisting for several weeks longer than most in autumn.[3][4][5]
Cultivation
[edit]Saplings grown from seed by Haarlem head forester J. Kollerie were first planted along a new canal in the city in 1891.[2] An U. campestris 'Haarlemensis' was cultivated in the Poort Bulten Arboretum in the 20th century.[4] No specimens are known to survive.
References
[edit]- ^ "Neue Gehölze". Mitteilungen der Deutschen Dendrologischen Gesellschaft. 21: 366. 1912.
- ^ a b Springer, Leonard (1912-12-14). "Ulmus campestris Wheatleyi en Ulmus campestris Haerlemensis". Onze Tuinen. 7 (24): 277–288.
- ^ Green, Peter Shaw (1964). "Registration of cultivar names in Ulmus". Arnoldia. 24 (6–8). Arnold Arboretum, Harvard University: 41–80. Retrieved 16 February 2017.
- ^ a b "Herbarium specimen - L.1586966". Botany catalogues. Naturalis Biodiversity Center. Sheet labelled U. carpinifolia 'Haarlemensis' (Springer), Poort Bulten Arboretum , Oldenzaal (1929)
- ^ "Herbarium specimen - WAG.1852781". Botany catalogues. Naturalis Biodiversity Center. Sheet labelled U. campestris 'Haarlemensis', Haarlem (1915)
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
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