401 
Trapa bicornis, L- fil* 
The Leng or Ling or Links of China. The nuts of this 
water-plant are extensively brought to marl^et in that 
country. The horns of the fruit are blunt. The kernel, 
like that of the two following species, is of excellent taste. 
The plant is regularly cultivated in lakes and ponds of 
China. 
Trapa bispinosa, Eoxb.* 
Middle and South Asia, extending to Ceylon and Japan ; 
found also in Africa as far south as the Zambesi. Here in 
our culture it lasts through several years. In some countries, 
for instance in Cashmere, the nuts form an important staple 
cf food to the population. To this species probably 
belong T. CocJiin-cliinensis, Lour, and T. incisa, Sieb. and 
Zucc. 
Trapa natans, L.* 
The ordinary Waternut. Middle and South Europe, Middle 
Asia, North and Central Africa. Eecorded as an annual. 
T. quadrispinosa, Eoxb., from Sylhet, is an allied plant. 
Trifolium agrarium, L. 
The perennial Yellow Clover or Hop-Clover. All Europe, 
Western Asia. Of considerable value in sandy soil as a 
fodder-herb. It is easily naturalized. 
Trifolium Alexandrinum, L.* 
The Bersin- Clover. North-eastern Africa, South-western 
Asia, South Europe. Much grown for forage in Egypt. 
Eecorded as annual. 
Trifolium fragiferum, L. 
The Strawberry-Clover. Europe, North Africa, Middle and 
North Asia. A perennial species, well adapted for clay 
soils. 
Trifolium hybridum, L.* 
The Alsike-Clover. Europe, North Africa, Western Asia. 
A valuable perennial pasture-herb, particularly for swampy 
localities. 
