Telipogon mayoi, from the western Colombian Andes, is proposed as a new species. The species was found in “La Elvira” National Protective Forest in the Yumbo Municipality, one of the oldest protected areas in Colombia, close to the Farallones de Cali National Park, both localities in the Dapa Mountains. Specimens of Telipogon mayoi were previously misidentified as Telipogon lankesteri Ames and T. williamsii P.Ortiz, but detailed analysis of the floral morphology revealed that it is different. Telipogon mayoi is most similar to T. lankesteri but it is characterized by the crenulated margins of the leaves (vs. entire margins), the ovate oblong lip (vs. oblong lanceolate) and furcate setae on the column (vs. simple setae). We provide a description, illustrations, a plate, in situ photographs, a distribution map, and ecological notes. Key Words: Andes, cloud forest, Colombia, miniature Telipogon, Oncidiinae
Stelis excentrica, a new species endemic to the Cauca slope of the western Andes, municipality of Cali, Valle del Cauca, Colombia, is described and illustrated. It was found in the northern part of the Farallones de Cali National Park, in the vicinity of the protected area “El Danubio” administered by the Cali mayoralty. Stelis excentrica is similar to Stelis gigantissima from Ecuador but differs in the ocher-green flowers (vs. dark purple), the reniform petals (vs. flabellate petals), subquadrate lip with a minute apicule (vs. subcuneate without apicule). Reaching up to 30.6 mm from the apex of the dorsal sepal to the apex of the lateral sepal, Stelis excentrica probably has the largest flowers reported in any member of Stelis subgen. Stelis. Its 60 cm long inflorescence is only rivaled by that of Stelis gigantissima. Ecological notes, in situ photographs, typus illustration, maps, and a composite plate are provided. Key Words: biggest flower, Farallones de Cali, Stelis gigantissima, taxonomy
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