270 
Kail, Kohlrabi, &c. Other races of this species are collec- 
tively represented by Brassica Eapa, L. (B. campestris, L.), 
the Wild Kavew, yielding most of the varieties of Turnips, 
some with other cultivated forms transferred to us from 
ancient times. Again other varieties are comprehended 
within Brassica Napus, L., such as the Swedish and Teltower 
Turnips, while the Bape seed, so important for its oil 
(Colza), is also derived from a form of B. Kapus. The 
Rape should he produced here as an agrarian produce, 
giving a rapid return, wherever it should remain free of 
aphis. The hardier turnips could he produced on our 
highest Alps, as they are grown still within the Arctic circle, 
and, according to Dr. J. Hooker, at a height of 15,000 feet 
in the Himalaya mountains. 
Buttimus umbellatus, L. 
The Blowering Rush. Europe, North and Middle Asia. 
This elegant perennial water-plant is mentioned here more 
for its value in embellishing our lakes and watercourses than 
for the sake of its roots. The latter, when roasted, are 
edible. The plant would live in our subalpine rivulets. 
Bromus unioloides, Humboldt.* (R. ScJiraderi, Kunth.) 
Here called the Prairie Grass. Erom Central America it 
has spread over many parts of the globe. The writer saw it 
disseminated in the mountains of St. Vincent’s Gulf as 
early as 1847. It is one of the richest of all grasses, grows 
continously and spreads readily from seeds, particularly on 
fertile and somewhat humid soil, and has proved as a lasting 
and nutritious fodder-grass or pasture-grass one of our best 
acquisitions. 
Broussonetia papyrifera, Ventenat. 
The Paper Mulberry. Islands of the Pacific Ocean, China, 
Japan, perhaps only truly indigenous in the last-named 
country. The bast of this tree or shrub can be converted 
into very strong paper. It can also be used as a textile 
fabric ; furthermore the fabrics made from it can be dressed 
with linseed oil for waterproof coverings. In cultivation 
the plant is kept like an osier. The leaves cannot be used 
