ABSTRACT
Malaxis paludosa Masdevallia, curious closed flowers Bolbophyllum, labellum kept in constant movement by every breath of air Dendrobium, contrivance for self-fertilization Cattleya, simple manner of fertilization Epidendrum Self-fertile Epidendreae. This chapter describes the great exotic tribes of the Malaxeae, Epidendreae, and Vandeae. The flowers of the Malaxis paludosa, though so small and inconspicuous, are highly attractive to insects. The Epidendreae and Malaxeae are characterized by the pollen-grains cohering into large waxy masses. In the latter of these groups the pollinia are said not to be furnished with caudicles exist in Masdevallia fenestrata and some other species in an efficient condition, although unattached and of minute size. Cattleya is fertilized in a very simple manner, different from that in any British orchid. The rostellum is a broad, tongue-shaped projection, which arches slightly over the stigma; the upper surface is formed of smooth membrane; the lower surface together with the central portion consists of a very thick layer of viscid matter.
