388 Tricotylons Races. 
Lychnis fulgens. The tricotylous seedlings of this 
species are as a rule weakly; their culture, therefore, is 
difficult and their harvest poor. In 1892 I had a tri- 
cotylous plant whose seeds gave a proportion of 5%. 
From these I reached, in the spring of 1894, a ratio of 
13 % containing one tetracotylous plant; most of the 
tricotyls afterwards remained ternary. In 1895 they 
produced tricotyls in proportions varying from 3 to 1 1 % , 
with a mean of 6%. In the next, i. e., the fifth genera- 
tion (spring of 1896), I counted from 2 to 8% tricotyls 
per seed-parent, and from a particular individual 21 tri- 
cotyls amongst 110 seedlings, i. e., about 19%. But the 
number of seedlings in this case was too small to signify 
a real advance. 
Penstemon gentianoides. In 1892 I had raised four 
tricotylous plants from bought seed. They produced 
respectively 0.3, 1.0, 2.6 and 3% tricotyls in 1893. I 
planted out the tricotylous seedlings of the best seed- 
parent, but only six managed to flower. Their seeds gave 
ratios varying from 4% to 12% (March 1892), with a 
mean of 7%. The tricotylous seedlings of those seed- 
parents only which had ratios above 10% were planted 
out. Of these 8 tricotyls, 6 hemi-tricotyls and 2 tetra- 
cotyls have flowered. The seeds of the former gave 
ratios of tricotyls, ranging from to 3.3% with a mean 
of 2.8%; the hemi-tricotyls from 1.2% to 2.4% with a 
mean of 4.8% ; and the four tetracotyls 10% and 11%, 
amongst which, however, only a single seedling had four 
cotyledons. The offspring of both of these tetracotyls 
and of the best of the remaining seed-parents were 
planted out in 1895. Only in the case of eight plants, 
however, was the harvest a sufficient one and gave a 
ratio which as a rule was between and 12% and which 
