380 REMARKS ON 



arvense^ pMtense, nemorosum and si/lvati' 



cum, Carex arenaria^ uUginosa and sijlvatica, 



as well as aquatica, maritima, rupestris, al- 



pina, nivalis, used for many plants. But 



names derived from particular countries or 



districts are liable to much exception, few 



plants being sufficiently local to justify their 



use. Thus Ligusticum cornuhiense is found, 



not only in Cornwall, but in Portugal, Italy 



and Greece ; Schwenkia americana grows in 



Guinea as well as in South America. Such 



therefore, thou2;h suffered to remain on the 



authority of Linnasus, will seldom or never 



be imitated by any judicious writer, unless 



TroUius europceus and asiaticus may justify 



our naming the third species of that genus, 



lately brought from America, americanus. 



The use of a plant is often commodiously 



expressed in its specific name, as Brassica 



oleracea, Papaver somniferum, Inocarpiis 



edulis; so is likewise its time of flowering, 



as Primula veris, Leucojum vernum, cEstiviim 



and autiimnale, and Hellehorus hyemalis. 



When a plant has been erroneously made 

 into a new genus, the name so applied to it 

 may be retained for a specific appellation, as 



