Grobya.—Brazilian Orchids represented by G. galeata and G. Amherstiæ. Intermediate house.
Habenaria.—Terrestrial Orchids. H. militaris and H. rhodocheila are bright scarlet; H. carnea, flesh colour; H. Susannæ, H. Bonatea, and H. Ugandæ, tall-growing, green and white. The two latter species will grow in a cool house; the others need greater warmth. The North American species are nearly hardy, and may be grown in a frame.
Houlletia.—Fragrant epiphytal Orchids from South America. Intermediate house.
Ionopsis.—Pretty, slender, white and lilac species. Grow in small baskets in the intermediate house.
Lælia.—One of the largest and showiest genera, great favourites in gardens, and fine subjects in the hands of the hybridiser. The Mexican species L. anceps, L. autumnalis, L. albida, &c., used to be allotted a special dryish intermediate house, but they are now usually grown in the intermediate or Cattleya house, and rested in a cooler vinery or corridor. All the species require the same treatment as Cattleya.
Liparis.—A genus of dwarf Orchids chiefly of botanical interest. Intermediate house.
Lissochilus.—Showy terrestrial Orchids, chiefly from South and Tropical Africa. They should be grown in warm or cool conditions according to their habitats. L. Krebsii and L. speciosus are two handsome, cool-house species; L. giganteus, L. Horsfallii, and others of this class require a warm house. Being marshy plants, they need weak, liquid manure when growing.
Lueddemannia.—A fine genus of strong, Acineta-like growth and pendulous racemes of bronzy-orange coloured flowers. The growths are three to five feet in length. The best species are L. Lehmannii, L. Pescatorei, and L. triloba. Grow in baskets suspended in intermediate house.
Luisia.—Terete-leafed Orchids that may be grown in the warm house with the Aërides.
Lycaste.—Most of the species thrive in the cool end of the intermediate house. They have been grown successfully in a compost in which decayed leaves formed the principal ingredient, the remainder being either Sphagnum-moss, loam fibre, or peat, with a little sand or fine crocks added. In some collections L. Skinneri and some of the other species are grown in the cool house. All the species require to be kept as cool as possible in summer.