. Cyclopedia of American horticulture, comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers, and ornamental plants sold in the United States and Canada, together with geographical and biographical sketches. Gardening. t563. Selenipedium caudatum. In other instances it is ahnost indescribably transformed (Stanhopea, Gongora). In nearly all cases the labellum is provided with raised lines, crests, and markings for guiding the insects. In many genera the base is produced into a sac or spur, which secretes honey, or whose walls
. Cyclopedia of American horticulture, comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers, and ornamental plants sold in the United States and Canada, together with geographical and biographical sketches. Gardening. t563. Selenipedium caudatum. In other instances it is ahnost indescribably transformed (Stanhopea, Gongora). In nearly all cases the labellum is provided with raised lines, crests, and markings for guiding the insects. In many genera the base is produced into a sac or spur, which secretes honey, or whose walls contain juices which are sought by insects. In the curious JMadagascar Orchid, Anr/rcecnm sesquipedale, the spur attains the astonishing length of 10 or 11 inches {Fig. 15G4). TJie habit of Orchid plants is almost as varied as that of the flowers themselves. It is dependent upon the mode of life of the plants, which, in this respect, may be divided into three classes, —saprophytes, epiphytes, and terrestrial Orchids. True parasites are not known to occur in this family. The saprophytic Orchids are the most reduced forms, devoid of chlorophyll, and depending for their carbon food upon the organic matter of the humus in which they grow. The subterranean stem or rhizome consists of a much-knotted coral-like mass which takes the place of roots. In most species the rhizome has been foxmd to be invested with a fungus by means of which organic matter of the humus is absorbed and transformed into compounds available to the plant. The annual shoot is a brownish or yellowish stem bearing a few scales and a simple terminal inflorescence. Few, if any, of these plants are successfully cultivated, as it seems impos- sible to reproduce all the natural conditions. Common examples are the North American Corallorhizas. The epiphytic Orchids exhibit the most varied forms. These inhabit branches of trees, dead trunks, and often barren rocks in exposed places. They grow, without exception, in tro
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