During a trip to northern Argentina in search of cacti several years ago I came across an unexpected number of bulb species, not all of which I could identify. One of them, sighted in Salta Province, was growing on extremely steep slopes in a cloud forest several thousand feet above the city of Salta. http://flickr.com/photos/andrewrmw/… ightbox/ There were hundreds of these bulbs in bloom. The steepness, dense herbiage and slippery footing made it difficult to access the main body of the group. The gray appearance is due to the dripping clouds and the condensation from the overhanging branches of thinly foliaged trees. A guess might indicate it to be Hippeastrum tucumanum (H. argentinum). However, I did see clumps in another, drier region that looked closer to what I understand as the norm for that species, with petals more widely opened. If anybody can provide an identification I would appreciate it. Thanks Andrew Wilson San Diego