× Oncostele Explained

× Oncostele, abbreviated Ons., is a hybrid genus of orchids, used for greges containing at least one ancestor species from the genera Oncidium (Onc.) and Rhynchostele (Rst.).^[1] The nothogenus was defined in 2003 by J. M. H. Shaw.^[2]

Greges

Over 500 greges have been registered in × Oncostele.^[3] The grex Midnight Miracles has two cultivars, 'Masai Red' and 'Masai Splash', that have gained the Royal Horticultural Society's Award of Garden Merit.^{[4] [5]}

Primary

The genus × Oncostele contains the following primary hybrids:

• Ons. Black Beauty, Santa Barbara (1988) = Rst. bictoniense × Onc. leucochilum
• Ons. Elske Stolze, L.Stolze (1978) = Onc. sotoanum × Rst. bictoniensis (basionym: Odontocidium)
• Ons. Feathers, Woodland (2006) = Onc. maculatum × Rst. rossii
• Ons. Rustic Bridge, Rod McLellan Co. (1981) = Onc. fuscatum × Rst. ureskinneri

Non-primary

• Ons. Wildcat = Ons. Rustic Bridge × Onc. Crowborough, ^[6] which has gained the Royal Horticultural Society's Award of Garden Merit.^[7]

Formerly

• Cus. Compadre Juan Manzur, S.Cusi (2007) = Cauc. phalaenopsis (syn. Onc. phalaenopsis) × Rst. rossii

Notes and References

1. Rees, T. (compiler) (2018). The Interim Register of Marine and Nonmarine Genera. Available from http://www.irmng.org at VLIZ. Accessed 2018-03-20 https://www.gbif.org/species/108447507/verbatim
2. J.M.H.Shaw, Orchid Rev. 111(1254, Suppl.): 96 (2003).
3. Oncostele, OrchidRoots; http://bluenanta.com/orchid/species/?genus=Oncostele&genustype=hybrid
4. Web site: × Oncostele Midnight Miracles gx 'Masai Red' . The Royal Horticultural Society . 10 September 2020 .
5. Web site: × Oncostele Midnight Miracles gx 'Masai Splash' . The Royal Horticultural Society . 10 September 2020 .
6. Oncostele Wildcat, The International Orchid Register, http://apps.rhs.org.uk/horticulturaldatabase/orchidregister/orchiddetails.asp?ID=91626
7. Web site: × Oncostele Wildcat gx . The Royal Horticultural Society . 14 September 2020 .