The status of the Biltmore ash is controversial. By some botanists it has been considered to be no more than a downy form of F. americana, but Miss Miller in her monograph accepts it as a species and suggests that it may be the result of hybridisation between F. americana and F. pennsylvanica (op. cit., pp. 22-24 and 41-43). The tree at Kew described under F. biltmoreana in previous editions no longer exists, but there is another in the Ash collection, received from the Arnold Arboretum in 1902. This is a very slender-crowned tree, measuring 70 × 5 ft (1969). It has the following characters, which agree well with those of the Biltmore ash as defined by Miss Miller: young twigs grey-brown, downy; terminal buds ovoid with apiculate tips; leaves with seven to nine stalked, entire leaflets, downy and very white beneath; rachis downy. Fruits not seen and probably not borne by this tree. They are described as having terminal wings (i.e., the wing not extending as a rim along the body of the fruits).
Fraxinus biltmoreana Beadle
Genus
Other species in the genus
- Fraxinus americana L.
- Fraxinus angustifolia Vahl
- Fraxinus anomala Torr.
- Fraxinus bungeana DC.
- Fraxinus caroliniana Mill.
- Fraxinus chinensis Roxb.
- Fraxinus cuspidata Torr.
- Fraxinus dipetala Hook. & Arn.
- Fraxinus elonza Kirchn.
- Fraxinus excelsior L.
- Fraxinus floribunda Wall.
- Fraxinus griffithii C. B. Clarke
- Fraxinus holotricha Koehne
- Fraxinus latifolia Benth.
- Fraxinus longicuspis Sieb. & Zucc.
- Fraxinus mandshurica Rupr.
- Fraxinus mariesii Hook. f.
- Fraxinus nigra Marsh.
- Fraxinus obliqua Tausch
- Fraxinus ornus L.
- Fraxinus oxycarpa
- Fraxinus pallisiae
- Fraxinus paxiana Lingelsh.
- Fraxinus pennsylvanica Marsh.
- Fraxinus platypoda Oliver
- Fraxinus pubinervis Blume
- Fraxinus quadrangulata Michx.
- Fraxinus rotundifolia Mill.
- Fraxinus sieboldiana Blume
- Fraxinus sogdiana Bunge
- Fraxinus spaethiana Lingelsh.
- Fraxinus syriaca Boiss.
- Fraxinus texensis (A. Gray) Sarg.
- Fraxinus tomentosa Michx.
- Fraxinus 'Veltheimii'
- Fraxinus velutina Torr.
- Fraxinus xanthoxyloides [G. Don] DC.