268 BOTANICAL GAZETTE [OCTOBER 
equal numbers of the mutant: type and of the type of O. Lamarck- 
iana. Moreover, a mutant dwarf has been produced. 
O. Lamarckiana mut. liquida (fig. 5, A).—In 1912 and 1913 
a new type of mutant was discovered, which came next to O. scin- 
tillans, had flat and smooth leaves like that form, but the foliage 
was much broader and lighter green. The individual mutants 
resembled one another in all respects, save the size of the flowers; 
they were very slender and had leaves about two-thirds the size 
of those of O. Lamarckiana. The pollen was sometimes abundant, 
but in other flowers rather scanty. _ 
All in all, I had 6 mutants of this type. One came from seed 
of O. Lamarckiana, but unfortunately it failed to produce good 
seeds, although the fruits were well developed. Four others arose 
from O. lataX Lamarckiana, two in 1912, which also did not yield 
fertile seeds, and two in 1913. The last one was found in the 
culture of O. pallescens mut. no. 1, and mentioned previously. The 
seeds of the 3 fertile mutants were sown in 1914 and yielded small 
cultures, which split up into two types, one repeating the mutant 
parents in all respects, and the other differing in no visible way 
from ordinary O. Lamarckiana. Besides these there were some 
mutants which happened to belong to allied types. Table VU 
gives the size and constitution of these cultures. 
TABLE VII 
SECOND GENERATION OF O. liquida 
Mutant 1913 from Lamarckiana liquida Mutant Total at hous. 
pallescens .. 02.5.2 c II a 17 35 
lata 61 26 I 88 30 
Mth 6 ee 13 8 2 23 35 
Total. ove 85 40 3 128 31 
In each of these cultures 15 individuals have been allowed to 
flower, about one-half of these being the liguida type and the other 
half the Lamarckiana type. The 3 mutants were scintillans, 
pallescens, and cana. All 3 have grown vigorously and flowered 
in August and September; they differed in no respect from the 
_ races of the same names. 
