Biology:Magnolia fraseri
| Fraser magnolia | |
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| From Curtis's Botanical Magazine; or Flower Garden Displayed (London, 1809, volume 30, plate 1206). Hand-colored engraving by Francis Sansom after Sydenham Teast Edwards. | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Magnoliids |
| Order: | Magnoliales |
| Family: | Magnoliaceae |
| Genus: | Magnolia |
| Subgenus: | Magnolia subg. Magnolia |
| Section: | Magnolia sect. Auriculata |
| Species: | M. fraseri
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| Binomial name | |
| Magnolia fraseri Walter[2]
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| Natural range | |
Magnolia fraseri, commonly known as Fraser magnolia, mountain magnolia, earleaf cucumbertree, or mountain-oread, is a species of magnolia native to the south-eastern United States in the southern Appalachian Mountains and adjacent Atlantic and Gulf Coastal Plain from West Virginia south to northern Florida and west to eastern Texas . The Appalachian plants are classified as Magnolia fraseri var. fraseri, and the more coastal plants as M. fraseri var. pyramidata. These two kinds of magnolia are often recognized as distinct species, M. fraseri and M. pyramidata, respectively.
Fraser magnolia is a small, deciduous tree growing to 14 m (40 ft) tall, as a basal-branching, fragrant plant, with brown bark with a "warty" or "scaly" texture. The leaves are quite large, 15–25 cm (rarely up to 53 cm) long and 8–18 cm (rarely up to 29 cm) broad, with a pair of auricles (or "ear-lobes") at the base and an entire margin; they are green above and glaucous blue-green below. The showy white flowers are 16–25 cm in diameter with nine tepals; they open in late spring or early summer, after the foliage. The fruit is a woody, oblong, cone-like structure (like all Magnolias) 6.5–12 cm long, covered in small, pod-like follicles each containing one or two red seeds that hang out from the cone by a slender thread when ripe. A good seed crop occurs only about every 4–5 years. Reproduction is accomplished by both seed and vegetative sprouts. The fruit is eaten by wildlife, helping disperse the seeds. In the Appalachian Mountains, the Fraser Magnolia is a popular nest tree for the Virginia Northern Flying Squirrel. [3]
This tree grows best on rich, moist, well-drained soil. The very large showy white flowers and large-leaved, coarse-textured foliage make this an attractive ornamental tree, but otherwise it has little commercial value. It is sometimes cultivated in North America as a native alternative to exotic magnolias, and can be grown a considerable distance north of its natural range if given conditions favorable to its growth.
There are two varieties:
- Magnolia fraseri var. fraseri, native to the Appalachian Mountains.
- Magnolia fraseri var. pyramidata (Bartram) Pampanini, from the Coastal Plain. The vernacular name for this variety is Pyramid magnolia.
The bigleaf magnolia (Magnolia macrophylla) also has auriculate-lobed leaves.
Fraser Magnolia is named for the Scottish botanist John Fraser (1750–1811), who collected extensively in the Appalachian Mountains.
Gallery
M. fraseri in young forest, south of Spruce Knob, West Virginia, USA.
M. fraseri flower and foliage. West slope of Spruce Mountain, West Virginia, USA.
Magnolia fraseri flower bud and emerging leaves, Arnold Arboretum of Harvard University, accession #23-88*D
Magnolia fraseri maturing fruit Arnold Arboretum of Harvard University, accession #999-79*A.
References
- ↑ Khela, S. (2014). "Magnolia fraseri". IUCN Red List of Threatened Species 2014: e.T193941A2291599. doi:10.2305/IUCN.UK.2014-1.RLTS.T193941A2291599.en. https://www.iucnredlist.org/species/193941/2291599. Retrieved 20 November 2021.
- ↑ Magnolia fraseri was first described and published in Flora Caroliniana, secundum Systema vegetabilium Linnæi digesta, characteres essentiales naturalesve et differentias veras exhibens; cum emendationibus numerosis, descriptionum antea evulgatarum adumbrationes stirpium plus mille continens, necnon generibus novis non paucis, speciebus plurimis novisq. ornata. London 159. 1788 "Plant Name Details for Magnolia fraseri". IPNI. http://www.ipni.org:80/ipni/idPlantNameSearch.do?id=30302949-2. Retrieved June 6, 2011. "Distribution: United States of America (Northern America) / Type Information: Locality: Carolina"
- ↑ Menzel, Jennifer (2004). Nest Tree Use by the Endangered Virginia Northern Flying Squirrel in the Central Appalachian Mountains. 151(2).
- Hunt, D., ed. (1998). Magnolias and their allies. International Dendrology Society & Magnolia Society. ISBN:0-9517234-8-0.
- Sternberg, G. (2004). Native Trees for North American Landscapes pp. 264. Timber Press, Inc.
External links
- Magnolia fraseri images at the Arnold Arboretum of Harvard University Plant Image Database
- https://archive.today/20060311195300/http://wildwnc.org/trees/Magnolia_fraseri.html (wildwnc.org)
- Photos of flowers and foliage
- Magnolia fraseri images at bioimages.vanderbilt.edu
- Interactive Distribution Map of Magnolia fraseri
Wikidata ☰ Q819208 entry
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