MUTATIONS 279 
very short styles and was named brevistylis. Each differed somewhat 
with respect to other characters as well (see Fig. 115) but were named for 
their most striking difference from the parent species. De Vries next 
proceeded to hunt for more new forms. By transplanting rosettes from 
the original locality to his garden he carefully compared them when they 
flowered the second year and saved guarded seed from the ‘‘mutants”’ 
so that he might test the inheritance of the new forms. He also gathered 
seed from two different lamarckiana plants in the open and these were 
the source of his lamarckiana “families.”’ Of one of these families he 
raised several thousand plants from self-fertilized seed in each generation 
for seven generations and in each successive population he discovered 
a number of ‘mutants.’ This experiment is summarized in 
Table XLIV. 
Taste XLIV.—Pepicree or Aa Famity or G. Lamarckiana, 1886-1899 
Generation Gigas | Albida [Oblonga Rubrinervis [Lamarckiana Nanella | Lata | Scintillans 
J 
I | | | 9 
Il | | soc 15,000 5 5 
Ill eV il 1 10,000 3 3 
IV 1 176 8 14,000 60 7 1 
Vv oe 25 13 20 | 8,000 49 142 
VI 11 29 3 | 1,800 9 5 1 
VII 9 | 0 | 3,000 11 
VIII | 6 | 1 0 | 1,700 21 1 
otaleen c: 1 | 56 | 350 | 32 | 53,509 | 158 | 229 8 
This summary shows that among a total of some 50,000 seedlings of 
self-fertilized lamarckiana plants seven different new forms appeared 
with varying frequency. The first two to be recognized and isolated 
for testing were nanella and lata (see Fig. 116). The dwarf variety, 
nanella, was also found blooming among the typical lamarckiana plants 
at the original station and these plants, like those dwarfs that appeared 
in the experimental garden, always bred true if self-fertilized. Lata 
on the other hand proved to be self-sterile because entirely devoid of 
viable pollen. When fertilized with lamarckiana pollen it produced 15 
to 20 per cent. of lata and the remainder lamarckiana. Later on de 
Vries discovered a hybrid strain of lata that produced some viable pollen 
and when self-fertilized these plants produced the same proportion of 
lata and lamarckiana progeny. For this reason de Vries considers it an 
inconstant species. In the third generation another new form appeared, 
which unlike nanella and lata was more robust than lamarckiana. It 
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