Acer × freemanii
| Acer × freemanii | |
|---|---|
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| Transitioning to autumn color | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Sapindales |
| Family: | Sapindaceae |
| Genus: | Acer |
| Section: | Acer sect. Rubra |
| Species: | A. × freemanii
|
| Binomial name | |
| Acer × freemanii A.E. Murray[1]
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| Synonyms | |
|
Acer freemanii | |
Acer × freemanii, Freeman maple or Freeman's maple, is a naturally occurring hybrid maple that is the result of a cross between Acer rubrum (red maple) and Acer saccharinum (silver maple). Wild specimens are found in eastern North America where the parent species overlap. The species is named for Oliver M. Freeman of the U.S. National Arboretum who hybridized A. rubrum with A. saccharinum in 1933. The fall foliage is a striking orange-red. It has many commercially available cultivars and is frequently used as a street tree.
Cultivars[edit]
The cultivars are typically deliberately hybridized and selected in nurseries, not drawn from the wild specimens. Usually infertile (a desirable trait in cultivated maples), they have stronger branch attachments than silver maples and faster growth rates than red maples.[2]
- 'Armstrong', with a more yellow fall foliage
- Autumn Fantasy
- 'Celzam', trade name CELEBRATION
- Firefall
- 'Jeffersred', trade name AUTUMN BLAZE, recipient of the RHS's Award of Garden Merit[3]
- 'Marmo', which does not produce seeds
- 'Morgan' trade name INDIAN SUMMER
- 'Scarsen', trade name SCARLET SENTINEL
- Sienna Glen
Description[edit]
Even high-powered morphometric analyses of leaf shape cannot easily distinguish Acer × freemanii individuals from the parent species.[4] All that can be said is that Acer × freemanii is generally intermediate between the parents.[citation needed]
References[edit]
- ^ Kalmia 1:2, 18. 1969
- ^ "Freeman's maple". mortonarb.org. The Morton Arboretum. 2019. Retrieved 14 August 2019.
- ^ "Acer × freemanii Autumn Blaze = 'Jeffersred'". RHS. Retrieved 15 August 2019.
- ^ Jensen, Richard J.; Ciofani, Kristen M.; Miramontes, Lydia C. (August 2002). "Lines, outlines, and landmarks: morphometric analyses of leaves of Acer rubrum, Acer saccharinum (Aceraceae) and their hybrid". Taxon. 51 (3): 475–492. doi:10.2307/1554860. JSTOR 1554860. Retrieved 5 October 2019.