548 
Gates .— The Trisomic Mutations of Oenothera. 
Table I. 
Mutants with if chromosomes. 
Mutation. 
Parent form. 
A uthorP 
Remarks. 
lata, de Vries 
Oe. Lamarckiana 
Lutz, 1912 
/ 
semilata , Gates 
Oe. lata x Lamarckiana 
Gates, 1912 
Gates and Thomas, 1914 
Gates and Thomas, 1914 
albida, de Vries 
Oe. La77iarckiana 
Lutz, 1908, 1917 
incui-vata, Gates 
Oe. La77ia7'ckiana, 
Gates, 1915 
lata 
Swedish race 
Oe. bie7i7iis race 
Gates and Thomas, 1914 
The conception of parallel 
simplex lata 
Oe. Lamarckiana, mut. 
de Vries, 1919 
mutations was based on 
this form. 
Oe. mut. si7?iplex differs 
simplex 
Boedijn, 1920 
from La7/ia7xkia7ta in 
seeunda lata 
Oe. La7ua7'ckiana,vnu\.. secwida 
Boedijn, 1920 
having lost a lethal 
factor. It has no empty 
seeds, no velutina ga¬ 
metes, and hence does 
not give twin types in 
F y crosses. It produces 
lata, oblonga, scinlil- 
lans, See., as mutations. 
albinervis, van Overeem 
Oe. bie7inis semigigas x bieimis 
van Overeem, 1920 
lata rubricalyx 
Oe. rubricalyx x grandijlora F 2 
Gates and Thomas, 1914 
de Vriesii 
Oe. La7narckia7ia se7?iigigas 
van Overeem, 1920, 1922 
bipartita, Lutz 
Oe. Lama7xkiana 
Lutz, 1917 
. 
type 5509 (modified, 
>> 
oblonga ) 
subovata , de Vries 
Oe. Lamarckiana and Oe. lata 
type 2806 
x La7narckia7ia 
Oe. La77iarckiana 
>> 
‘Having many points in 
type 4499 
Oe. lata x La7narckia>ia and 
common with type 
5509 .’ 
type 5365 
Oe. lata selfed 
Oe. lata selfed 
> > 
exilis, Lutz 
Oe. lata selfed 
exundans , Lutz 
Oe. lata selfed 
superflua , de Vries ? 
Oe. lata selfed 
de Vries, 1916 
4 A mutant from lata,' 
cana, de Vries 
Oe. Lamarckiana, &c. 
van Overeem, 1922 
probably from Oe. lata 
x LM77iarcktana. 
pallescens, de Vries 
Oe. La7naixkiana 
van Overeem, 1920 
Lactuca, „ 
liquida, ,, 
)> 
> > 
» 
lata, de Vries 
Oe. suaveolens, Desf. 
de Vries, 1918 
Chromosomes counted by 
jaculatrix, de Vries ? 
van Overeem, 1920 
van Overeem. 
See below. 
scintillans , de Vries 
oblonga, de Vries 
Oe. La)narckia7ia 
Hance, 1918 
Lutz, 1917 
There are certain contra¬ 
unnamed 
Oe. erytlMna 
van Overeem, 1920, 1922 
van Overeem, 1920 
dictory features in the 
record of ‘ oblonga 
but van Overeem (1922) 
has counted 15 chromo¬ 
somes in 10 plants. 
T This refers to the author who determined the chromosome number. 
