Crataegus × lavalleei, sometimes known as hybrid cockspurthorn[1] or Lavallée's hawthorn, is a hybrid that arose between cultivated specimens of two species in the genus Crataegus (Hawthorn). It is an ornamental small tree with glossy dark green unlobed leaves that is used horticulturally.
| Crataegus × lavalleei | |
|---|---|
| |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Rosales |
| Family: | Rosaceae |
| Genus: | Crataegus |
| Species: | C. × lavalleei
|
| Binomial name | |
| Crataegus × lavalleei | |
| Synonyms | |
|
C. × carrierei Vauvel | |
The female parent was C. mexicana (sometimes mistakenly called C. pubescens), and the male parent is thought to be C. calpodendron (which is sometimes mistakenly called C. crus-galli).[2]
Carrière's hawthorn, C. × carrierei has the same parentage, and is therefore a synonym, i.e. the same species. There are minor differences between Lavallée's hawthorn and Carrière's hawthorn, and the latter is considered a separate cultivar, which is formally written as Crataegus 'Carrierei'. It has gained the Royal Horticultural Society's Award of Garden Merit.[3] The leaves turn red before falling very late in the season. This cultivar is also characterised by almost thornless stems, and abundant orange berries which last long on the tree.[3]
References
edit- ^ BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
- ^ Phipps, James Bird; O’Kennon, R.J.; Lance, R.W. (2003). "Chapter 7: Hawthorns". Hawthorns and medlars. Cambridge: Royal Horticultural Society. p. 102.
The female parent of Crataegus x lavallei is C. mexikana and the pollen parent was suspected of being C. crus-galli, later generally repeated as fact. An unpublished M.Sc. thesis by a former student of mine, Tom Wells, provides a strong argument that C. calpodendron was the male parent. In this context it is interesting to note that C. calpodendron was in 19th-century France disguised as Mespilus fontanesiana in a number of botanic gardens and that, when it was transferred to Crataegus as C. fontanesiana, it was thought by some botanists to be a synonym of C. crus-galli.
- ^ a b "RHS Plant Selector - Crataegus × lavalleei 'Carrierei'". Retrieved 15 April 2020.
External links
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Media related to Crataegus × lavalleei at Wikimedia Commons