2 THE SPECIES
Earlier works have retained this separation, although Oakeley in his latest work, lumps clowesii and the former 'ruckeri' into a single group. Readers should, hlowever, note the modern view, and refer to the clowesii page.
Schlechter, as noted by Kennedy2 includes as allied species hohenlohi C. Morr, macroglossum Schlechter and goldschmidtiana Schlechter, although Kennedy notes that while Schlechter first described the last two species in his 1916 review, he (Kennedy) could find no subsequent record of them in the literature. Kennedy believes they may (with hohenlohi) be in collections mislabelled ruckeri, or that ruckeri may be a variable species, with these three forms synonyms or varieties of the same species.
The Dictionary of Gardening and Williams both show Anguloa hohenlohi as a synonym for A, ruckeri var. sanguinea. Whatever is the true position regarding this species, Kennedy's flattened lip diagrams are reproduced here.
One further species of this group is Anguloa brevilabres Rolfe, first described in The Orchid Review in 1915. It was incorrectly subsequently redescribed as Anguloa saggittata in The Kew Bulletin of 1931, although this was corrected in 1935.
Kennedy2 notes all 5 'species' are exceedingly superficially similar, with essentially identical floral morphology, the principle diagnostic feature involving the lip configuration, as illustrated. Under Anguloa ruckeri the literature lists a number of colour variants, including var. albiflora (white), sanguinea (deep red) (Veitch); retusa (dark purple) (Williams); and alba (white), media (dotted carmine) (Dictionary of Gardening).
In his latest work, Oakeley now beleives this 'species' is, in fact, a natural hybrid between Ang. hohenlohii crossed with Ang. closesii. Colonies of this natural hybrid have been see in Venezuela, and the artifical hybrid using these parents has been made, showing typical 'ruckeri' form.
It now should be shown as Anguloa xruckeri to indicate its hybrid status.
Anguloa xacostae is the natural hybrid of Anguloa hohenlohii x Anguloa eburnea from northern Colombia.
This dark red Anguoa first flowered in Belgium in 1849, following collection in Colombia. It is now no longer known there, although is found in Venezuela.
Anguloa hohenlohii var. macroglossa was given specific rank as Anguloa macroglossa, but Oakley has reduced it to only a variety of this species.
A species from Colombia, growing some 1,500 metres above sea level in woodland.
If you wish you may forward
E-mail comments etc. to me at -