NOMENCLATURE OF PLANTS. 215 
always deserves the preference. But the adjective 
must not be too long, nor consist of two words. 
When such trivial name is not to be found, we 
smust have recourse to the eo) place of g¥#owth 
and other circumstances.: 
Seren 
The colour and native country afford very uncertain 
trivial names. 
It cannot be known from the appearance of a 
plant whether it grows in this or in that country, 
nor whether another species may not likewise grow 
in the same place. Neither can it be known whe- 
ther the colour of a plant is constant or not. Tri- 
vial names, from these circumstaaces, are not there- 
fore to be recommended. Linnzeus has Polemonium 
coerulcum, though it varies with white flowers. Euony- 
mus europeus is not the only European species of 
that genus; the E. verrucosus and Jatifolius are both 
natives of Europe; and we might give other in- 
stances to shew that such names are not good. 
§ 222. 
The botanist must attend to varieties when they 
are considerable; he must give them a second name, 
and mark them with a Greek letter, ¢. ¢. Brassica 
oleracea. 
et. viridis. ¢; sélenisia: 
B. rubra. yn. sabellica. 
y- capitata. 9. botrytis. 
§. sabauda. i. Napobrassica. 
e laciniata. Ke gongylodes. 
O 4 Ne fn 
