AN INDEX TO ORCHIDS. 
N the subjoined lists of Orchids, the plants have been arranged according to the degree 
of heat necessary to bring them to perfection—thus, the “stove’’ species require to 
be grown in the East Indian house, those classified as “intermediate” thrive in the 
Brazilian house, while the “cool-house” species are best suited by the low temperature 
of the Peruvian house. The few “hardy” species here enumerated are almost all natives 
of Britain or of North America, and, being all terrestrial, are well adapted for culture in 
outside borders. 
The habit of each plant is stated immediately after the name, the epiphytal species 
being marked eph, and the terrestrial ones ter; while s-ter indicates subjects of a sub- 
terrestrial habit of growth. 
The colours are generally arranged according to their importance, the prevailing hue 
being stated first in each instance. In many species, however, the markings are often 
very variable, so that the colours here mentioned may perhaps be found to differ slightly 
from those actually seen in a particular specimen. In such cases the markings most 
frequently found have been given. 
The species of Anectochilus and Physwrus stand in strong contrast to the other 
members of the Order, being grown only for their handsome foliage, and not for the 
beauty of their flowers, which are small and unattractive. The descriptive colours in 
these cases, therefore, apply only to the foliage, as indicated by the abbreviation fol, 
preceding the colours. 
For much interesting information relative to the structural peculiarities of these 
plants, see “Orchidee” and “Orchid Fertilisation,’ in Vol. II. Full instructions as to 
general culture are given in the article on “Orchid House,” and the special require- 
ments of the more important genera will be found under their respective headings. 
The following abbreviations are used :— 
b, blue; bk, black; br, brown; c, cream; eph, epiphytal; fol, foliage; g, green; 1, lilac; m, magenta; mu, manye $ 
0, orange; p, purple; pi, pink; r, red;, sc, scented; si, silver; s-ter, sub-terrestrial ; ter, terrestrial; v, violet; 
w, white; y, yellow. 
