Accepted as Triphora trianthophoros on Plants of the World Online, iNat's taxonomic authority for vascular plants. Also accepted as -os on:
ITIS
Flora of North America
Go Orchids
Tropicos
Per ITIS,
The basionym Arethusa trianthophoros Sw. was published with a Greek feminine ending, and so Triphora trianthophoros (Sw.) Rydb. retains its Greek feminine ending; its publication with latinized ending 'trianthophora' is a correctable error under ICBN Art. 60.1 (2006)
POWO (2018). 'Plants of the World Online. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http://apps.kew.org/wcsp/ Retrieved 7 November 2018' (Link)
Unintended disagreements occur when a parent (B) is
thinned by swapping a child (E) to another part of the
taxonomic tree, resulting in existing IDs of the parent being interpreted
as disagreements with existing IDs of the swapped child.
Identification
ID 2 of taxon E will be an unintended disagreement with ID 1 of taxon B after the taxon swap
If thinning a parent results in more than 10 unintended disagreements, you
should split the parent after swapping the child to replace existing IDs
of the parent (B) with IDs that don't disagree.