332 FOREST CULTURE AND 
lowing, and often regarded asa variety of M. viri- 
dis, L. 
Mentha silvestris, L.—The Horse Mint. Europe, 
North Africa, temperate Asia. Perennial. One of 
the Crisp Mints is derived from this species. 
Mentha viridis, L.—The Spear Mint. Middle and 
South Europe. Perennial. A particular sort of 
Crisp Mint (M. crispata, Schrad.) belongs to this spe- 
cies. 
fOur native Mints, M. Australis and M. gracilis, M. 
saturejoides, R. Br., yield also oil of good flavor. M. 
Australis is far the largest and most abundant of these 
plants. | 
Meyanthes trifoliata, L.—Inappropriately called the 
Bog- bean. Europe, North and Middle Asia, North 
America. In springy and spongy bogs. <A perennial 
herb of great beauty, which could be naturalized with 
facility inour Alps. The rootis starchy. The whole 
plant is pervaded with a bitter principle, largely de- 
rived from Menyanthin. The plant is used medici- 
nally as a tonic and febrifuge. 
Microseris Forsteri, J. Hooker.—The Native Scor- 
zonera of extra-tropical Australia and New Zealand. 
A perennial herb deserving attention, as likely its 
roots would enlarge and improve through culture. 
Oa the summits of our snowy mountains the plant de- 
velops itself most luxuriantly. The aborigines use 
the root for food. The plant would prove hardy in 
Middle Europe. 
Morus alba, L.*—The White Mulberry-tree. China. 
This tree, in several varieties, provides the food for 
the ordinary Chinese silk-insect (Bombyx Mori). Silk 
was produced in Italy already 600 years ago, and there 
