Dear Oliver I am not an expert, but the description of the leaf suggests to me the genus Epistephium. The flower certainly does resemble a Sobralia.
I would peruse the web page by Nina Rach, possibly contact her for her opinion. http://www.autrevie.com/Sobralia/ Another good person to contact would be Eric C., David Bennett and others may be able to help with the identity. Leo <snip> Here is a picture of an orchid found growing at 1500m in Pampa Hermosa, near Satipo in Perú. http://www.trekperu.org/orchid.jpg _______________________________________________ the OrchidGuide Digest (OGD) orchids@orchidguide.com http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com