Odontoglossum and Oncidium include some of the best-known cultivated orchids.
In the cool or odontoglossum house a considerable degree of moisture must be maintained at all times, for in these the plants keep growing more or less continuously.
The bottom of the border as well as that Cymbidium Cypripedium Cyrtopodium Dendrobium Diacrium Disa Epidendrum Eulophia Eulophiella Galeandra Gongora Grammatophyllum Habenaria Houlletia lonopsis Ipsea Laelia Laelio-Cattleya* Leptotes Lissochilus Lycaste Masdevallia Miltonia Mormodes Odontoglossum Odontioda* Oncidium Peristeria Pescatorea Phaj us Phaio - calanthe* Phalaenopsis Pilumna Platyclinis Pleione Pleurothallis Polystachya Promenaea Renanthera Restrepia Rodriguezia S accolabium Schomburgkia Scuticaria Sobralia Sophro-cattleya* Sophronitis Spathoglottis Stanhopea Thunia Trichopilia Trichosma Vanda Zygo - colax* of the drain must be kept lower than the general level of the subsoil, else the soakage will gather in all the little depressions of its surface.
The adventurous orchid-hunter, however, has penetrated deeply into their recesses in search of choice varieties, and collectors of these valuable plants are largely indebted to Colombia for their specimens of Cattleya Mendelli, Warscewiczii and Trianae; Dowiana aurea; Odontoglossum crispum, Pescatorei, vexillarium, odoratum, coronarium, Harryanum, and blandum; Miltonia vexillaria; Oncidium carthaginense and Kramerianum; Masdevalliae, Epidendra, Schomburgkiae and many others.