
Andreas from Bogotá, Colombia (aka Quimbaya@Flickr - check out his other orchid photos!) submitted this photograph of an orchid cultivated by noted Colombian orchid grower, Sócrates Forero (BPotD Flickr Group Pool | original image). Thank you Andreas!
Scaphosepalum antenniferum is native to northwestern South America, i.e., Bolivia, Peru, Ecuador and Colombia. Its plant family, the Orchidaceae, contains over eight hundred described genera and roughly twenty-five thousand species. With so many different kinds of orchids, it is necessary to divide the family into smaller chunks to be able to effectively communicate about the plants within it. Orchid enthusiasts and biologists will use subfamily, tribe and subtribe as intermediate groupings between family and genus. In the case of Scaphosepalum, it is often described as being a pleurothallid orchid, meaning it is in the subtribe Pleurothallidinae (tribe: Epidendreae and subfamily: Epidendroideae). The Pleurothallidinae contains ~30 genera (roughly 3.5% of all genera), but those 30 genera contain over four thousand species – ~16% of all orchids! Scaphosepalum is a small genus within the Pleurothallidinae, containing only thirty or so species.
Botany / technology resource link: Plant Life for Virtual Terrain is part of the Virtual Terrain Project, whose goal is “to foster the creation of tools for easily constructing any part of the real world in interactive, 3D digital form”. It's a fascinating site that discusses the challenges of rendering plants digitally for video games, animated movies, computer simulations and scientific modelling. It also evaluates the tools available and provides an extensive list of resources.





Scaphosepalum antenniferum - Z10 - RHS Index of Garden Plants, Griffiths
I see now that different sources have widely different numbers for the number of genera in the Pleurothallidinae, but I don't have the time at the moment to investigate why.
Probably lack of agreement among taxonomists. Possibly there has been some DNA work done, resulting in a gulf between pre-DNA and post-DNA interpretation.
This page on Pleurothallidinae taxonomy goes into some details about the discrepancies in numbers (scroll down to “Current status of Pleurothallidinae taxonomy”), though it would be handy to see the 2004 Luer paper to see why the numbers have increased re: genera.
I also note that they mention on the page that Scaphosepalum contains 67 species – I think it's a safe assumption that at least a few of those were discoveries in the past few decades.
I'm curious about the etymology of the name Scaphosepalum. My guess is that the first part of the name is from the Greek σκάφοσ (scaphos), meaning "ship", indicating that the sepals are like a ship.
Yes, exactly right, Steve: Scaphosepalum via Wikipedia.