''Crataegus'' × ''lavalleei'', sometimes known as hybrid cockspurthorn or Lavallée's hawthorn, is a

hybrid Hybrid may refer to: Science * Hybrid (biology), an offspring resulting from cross-breeding ** Hybrid grape, grape varieties produced by cross-breeding two ''Vitis'' species ** Hybridity, the property of a hybrid plant which is a union of two diff ...

that arose between cultivated specimens of two

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

in the genus ''

Crataegus ''Crataegus'' (), commonly called hawthorn, quickthorn, thornapple, Voss, E. G. 1985. ''Michigan Flora: A guide to the identification and occurrence of the native and naturalized seed-plants of the state. Part II: Dicots (Saururaceae–Cornacea ...

'' (Hawthorn). It is an ornamental small tree with glossy dark green unlobed leaves that is used horticulturally. 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''). Carrière's hawthorn, ''C.'' × ''carrierei'' has the same parentage, and is therefore a

synonym A synonym is a word, morpheme, or phrase that means precisely or nearly the same as another word, morpheme, or phrase in a given language. For example, in the English language, the words ''begin'', ''start'', ''commence'', and ''initiate'' are a ...

, 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 A cultivar is a kind of Horticulture, cultivated plant that people have selected for desired phenotypic trait, traits and which retains those traits when Plant propagation, propagated. Methods used to propagate cultivars include division, root a ...

, which is formally written as ''Crataegus'' 'Carrierei'. It has gained the

Royal Horticultural Society The Royal Horticultural Society (RHS), founded in 1804 as the Horticultural Society of London, is the UK's leading gardening charity. The RHS promotes horticulture through its five gardens at Wisley (Surrey), Hyde Hall (Essex), Harlow Carr ...

Award of Garden Merit The Award of Garden Merit (AGM) is a long-established award for plants by the British Royal Horticultural Society (RHS). It is based on assessment of the plants' performance under UK growing conditions. It includes the full range of cultivated p ...

. 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.

References

External links

USDA Plants Profile
{{DEFAULTSORT:Crataegus lavalleei lavalleei Hybrid plants