Species from Veracruz, Mexico (high humidity weather). According to the "Trichocentrum" Wikipedia page, "Many species from Central America apparently endure a prolonged drought for at least part of the year, and have developed succulent leaves to deal with these conditions. Plants may shrivel quite severely without long-lasting injury." Stramineum is once such species--it is a "mule ear" type, with its leaves differing from other oncidinae in that they are very firm, almost succulent-like. Thus, the plant can tolerate more light & warmer climates than typical oncidinae.
Water when dry though summer (about once per week). During winter, longer "dry-out" periods between waterings will mimic its natural habitat's drier season. Place in partial shade to bright light. (Plant can still flower even in a more shaded location!) Pot in medium fir bark or LECA. Plant may also be mounted with sphagnum moss.
The flower stem emerges from the base of the leaf. The flowers form on stems that branch off the main flower stem into a shape similar to that of a vanda flower stem (with what resembles a column or cylinder of flowers). They are about 1 inch in size and last approx. 1 month. Colour ranges in shade from yellow-leaning cream to pastel yellow with magenta speckles at the base of the column, as well as on the apical wings coming off the sides of the column. There is also a bit of magenta colouring just below the creamy yellow anther cap.