402 
Trifolium incarnatum, L. 
The Carnation-Clover. Middle and South Europe. Though 
annual only, it is valued in some of the systems of rotation 
of crops. It forms particularly a good fodder for sheep. A 
white flowering variety exists. 
Trifolium medium, E.* 
The Red Zigzag Clover. Europe, North and Middle Asia. 
A deep-rooting perennial herb, much better adapted for dry 
sandy places than T. pratense. It would also endure the 
inclemency of the clime of our higher alpine regions if 
disseminated there. T. Q;iiartinianum, A. Rich., is an allied 
plant from Abyssinia, where several endemic species exist. 
Trifolium pratense, E.* 
The ordinary Red Clover. All Europe, North Africa, North 
and Middle Asia, extending to Japan. A biennial or under 
special circumstances also perennial herb, of great import- 
ance for stable-fodder. It prefers rich soil and particularly 
such, which is not devoid of lime. Also this species would 
live in our alps, where it would much enrich the pastures. 
Trifolium repens, E.* 
The ordinary White Clover. Europe, North Africa, North 
and Midele Asia, sub-Arctic America. Perennial. Most 
valuable as a fodder-plant on pastoral land. It has a predi- 
lection for moist soil, but springs again from dry spots after 
rain. It has -naturally spread over many of our humid 
valleys, and its growth should be encouraged in such 
localities. 
Trifolium subrotundum, Hochstett. 
The Mayad-Clover. North and Middle Africa, ascending to 
9000 feet. A perennial species, in its native countries with 
advantage utilized for Clover-culture. This by no means 
closes the list of the Clovers, desirable for introduction, 
inasmuch as about 150 well-marked species are recognized^ 
many doubtless of pastoral value. But the notes of rural 
observers on any of these kinds are so sparingly extant, 
that much uncertainty about the yield and nutritive value 
of the various kinds continues to prevail. Most Clovers 
