Cattleya trianae Cattleya trianae Cattleya trianae (Lind. & Rchb. fil), also known as "Flor de Mayo" ("May flower") or "Christmas orchid", is a plant belonging to the Orchidaceae family. It grows as an epiphytic orchid, with succulent leaves, endemic to Colombia where it was nominated as the national flower in November 1936. That year, the National Academy of History of Argentina asked the Latin American countries to participate in an exhibition with the representative flowers of each country. The Colombian government gave the botanist Emilio Robledo the task to designate the most representative flowering plant of the country. The choice of "Cattleya
Flowering plant Hofmeister discovered the changes occurring in the embryo-sac of flowering plants, and determined the correct relationships of these to the Cryptogamia. This fixed the position of Gymnosperms as a class distinct from Dicotyledons, and the term Angiosperm then gradually came to be accepted as the suitable designation for the whole of the flowering plants other than Gymnosperms, including the classes of Dicotyledons and Monocotyledons. This is the sense in which the term is used today. In most taxonomies, the flowering plants are treated as a coherent group. The most popular descriptive name has been Angiospermae (Angiosperms), with Anthophyta ("flowering plants")