Ascoglossum

Ascoglossum, abbreviated as Ascgm in horticultural trade, is a monotypic genus of epiphytic orchids in family Orchidaceae. Its only species Ascoglossum calopterum is endemic to Dinagat Island in the southern Philippines, and is critically endangered by collection as an ornamental plant and habitat loss. Flowers are a vivid purple. Plant growth is similar to Renanthera.[1]

Ascoglossum
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Epidendroideae
Tribe: Vandeae
Subtribe: Aeridinae
Genus: Ascoglossum
Schltr.
Species:
A. calopterum
Binomial name
Ascoglossum calopterum
(Rchb.f.) Schltr.
Synonyms[2]
  • Saccolabium calopterum Rchb.f.
  • Cleisostoma cryptochilum F.Muell.
  • Saccolabium schleinitzianum Kraenzl.
  • Saccolabium purpureum J.J.Sm.
  • Ascoglossum purpureum (J.J.Sm.) Schltr.

Based on research published by Kochyan & Schuit. in Phytotaxa 161 (2014) 68, The Royal Horticultural Society considers the species as Renanthera caloptera for hybrid registration purposes.[3]

Before that 2014 taxonomic revision,Ascoglossum formed several different intergeneric hybrids (nothogenera):

Ascoglossum × Renanthera (Ren.)Renanthoglossum (Rngm.)
Ascoglossum × Aerides (Aer.)Nonaara (Non.)
Ascoglossum × ArachnisNgara (Ngara)
Ascoglossum × ParaphalaenopsisAscoparanthera (Apn.)
Ascoglossum × Phalaenopsis (Phal.)Dresslerara (Dres.)
Ascoglossum × RhynchostylisLauara (Lauara)
Ascoglossum × TrichoglottisSheehanara (Shn.)
Ascoglossum × VandaPantapaara (Pntp.)
Ascoglossum × VandopsisFreedara (Fdra.)

Orchid hybrids are registered with The International Register at the Royal Horticultural Society. One primary hybrid was originated and registered by A.Kolopaking in 1989 as Renanthoglossum Nina Rach (Ascoglossum purpureum × Renanthera monachica). As of 2014, this is classified as Renanthera Nina Rach [4]

References
  1. E. M. G. Agoo; J. Cootes; A. Golamco Jr.; E. F. de Vogel & D. Tiu (2004). "Ascoglossum calopterum". The IUCN Red List of Threatened Species. IUCN. 2004: e.T46296A11043316. doi:10.2305/IUCN.UK.2004.RLTS.T46296A11043316.en. Retrieved 13 January 2018.
  2. Kew World Checklist of Selected Plant Families
  3. http://www.orchidsnewguinea.com/orchid-information/species/speciescode/1675
  4. http://apps.rhs.org.uk/horticulturaldatabase/orchidregister/orchiddetails.asp?ID=78251


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