Here are full-blowing large Orchids, with red, white, and yellow flowers; and among the grasses, smaller ones of great variety, and as great scientific interestMelastomaceous plants of various genera; Utricularias, Droseras, rare and various grasses, and Cyperoids of small sizes and fine kinds, with a species of Cassytha; in the water, Ceratophyllum (the well-known hornwort of the English ponds) and bog-mosses.