There are approximately 200 species of orchids that grow in the United States and 54 of those species grow here in Texas. Unlike their tropical cousins, Texas orchids are terrestrial, growing in the soil rather than attached to trees or rocks. Orchids can be found throughout the state in a variety of environments, but the majority (36 species) are found in the wet East Texas woodland, bogs, and savannas.
One of the orchids found in Southeast Texas is the Grass Pink -- Calopogon tuberosus. The Grass Pink has an interesting method of pollination, which depends on large bees. The hinged labellum of the Grass Pink has a yellow spot and hairs that mimic the anthers of some flowers. The bee lands on the labellum, which folds forward under the weight of the bee, and the bee's back lands against the column, where the pollen is collected on its back. The bee then crawls out and flies to the next flower and repeats the process, thus depositing the pollen from the first flower to the new one.
A short video of the process can be viewed here: Grass Pink Pollination
Chapman's Orchid is a rare orchid that can only be found in a few counties in Southeast Texas, Northern Florida, the adjacent area of Southern Georgia, and one county in North Carolina.