BOTANICAL APHORISMS» _ 9% 
lowing order: First, the calyx, then, the corolla, 
the nectarium, the stamina, the pistillum, the fruit 
and the seed. In the compound flowers we end 
with the receptacle, and in the umbelliferze we begin 
with the involucrum. A full description of the 
genus is contained in the essential character, the 
rules for forming which have been already detailed, 
§ 198. 
Varieties, if they are not remarkable, deserve 
little attention from botanists: but if they are of a 
very singular figure, they must be taken notice of 
and described, that they may not be considered as 
species. Variations in colour only are of no con- 
sequence, being exceedingly subject to change, as 
we shall see immediately, (§ 201). 
§ 199. 
in plants the following are the principal colours : 
1. Cyaneus, dark blue, like Prussian blue. 
2. Coeruleus, sky blue, like the flowers of Ve- 
ronica chamedrys. 
3. Azureus, azure blue, nearly the same with the 
former, but bright, like ultramarine. 
4. Caesius, pale blue, verging towards grey. 
5. Atrovirens, dark green, bordering on dark 
blue. 
6, Aeruginesus, light bluish green, lke verdi- 
grease. 
7. Prasinus, oT smaragdinus, gYass- 
green, without any tinge of yellow.or blue. 
8, Mavo-virens, green, verging upon yellow. 
N 3 9, Glaucus, 
