REPRODUOTIVE ORGANS IN THE PRIMULACEE. 89 
flowered varieties of Primula Aurieula approaching closely the 
normal form of the species. 
TABLE I.— Primula Auricula. 
Number of 
flowers fer- 
tilized. 
Number of 
capsules 
produced. 
Number of 
Long-styled by own-form pollen (homomorphic union) 16 13 153 
Long-styled by pollen of short-styled (heteromorphie 18 17 | 1945 
union) er. GI CI RN, 
Short-styled by own-form pollen (homomorphic union), 16 12 169 
Short-styled by pollen of long-styled (heteromorphie 18 18 | 1764 
BH) een 
SUMMARY. 
The two homomorphic unions | ............... eene een 32 25 323 
The two heteromorphie unions ....................... eee 36 35 | 3009 
By reducing the figures of the two homomorphie and the two 
heteromorphie unions, we get the following proportions :— 
Sa A ta 
E aude e 
E Ed 3 3 E m e e 
Bes | 228838122 |% 
2321588|12935|53|2 
The two homomorphie unions......, 100 78 1004 | 100 |1288 
The two heteromorphie unions .... 100 97 8339 100 18597 
This comparative tabulation of the different unions shows that 
the flowers of the two heteromorphic unions produce a greater 
number of good capsules and seeds than the flowers of the two 
homomorphie unions. The good capsules of the two heteromor- 
phic unions yield more seed, in about the proportion of seven to 
one, than those from the two homomorphic unions! Again, if we 
refer to the different unions of the two forms given separately in 
the upper table, we see that the short-styled forms produce the 
most seed in both homomorphie and heteromorphic unions. Thus, 
taking the two homomorphie unions, we see that the average of 
seeds per capsule from the short-styled unions is fourteen, that 
from the long-styled unions scarcely twelve, or as seven to six. 
In the heteromorphie unions these proportions are increased, the 
short-styled forms averaging 98, the long-styled 73 seeds per 
capsule,—that is, nearly as eight to six. These results, though 
clearly showing that the short-styled unions in every case yield 
the greatest amount of seed, are nevertheless far from lending 
