6 BOTANICAL GAZETTE [JANUARY 
tion parallel to the dehiscence the length is several times as great 
as the breadth. 
THE OVULATE STROBILUS 
The ovulate strobilus is cylindrical in outline, and when mature 
is green and smooth. There is such variation in the size and 
Fic. 3.—Staminate sporophylls: 
before aa: b, dehiscence bas 
taken place in the upper half but not 
yet in the lower; in c, nearly all the 
sporangia have shed their pollen; X2. 
general appearance of the strobi- 
lus that if one considered only the 
extremes he could easily describe 
new species. What may be re- 
garded as extremes in the appear- 
ance of large cones is represented 
in figs.6and7. The largest cone 
noted in several year’s collections 
was 33.5 cm. in length and 11 
cm. in diameter, and the smallest 
measured 21X8.5cm. The aver- 
age size is about 26.3X9.7 cm. 
The sporophylls appear to be 
arranged in vertical rows, and 
the number of sporophylls can 
be determined with considerable 
accuracy by counting the number 
of rows and number of -sporo- 
phylls in a row, but the arrange- 
ment is strictly spiral. The 
lowest number of sporophylls 
observed was 72, in 8 rows with 
9 in a row; and the highest num- 
ber was 182, in 14 rows with 13 
in a row; an average computed 
from 12 well developed cones was 11 rows with 11 in arow. The 
number of sporophylls, therefore, varies from 72 to 182, with 121 
as an average; and the number of ovules varies from 144 to 364, 
with an average of 252, since each sporophyll bears two ovules. 
The two hard spines or horns, which are similar to those on the 
microsporophyll, are always conspicuous, and they are so stiff 
and sharp that they make a large cone an uncomfortable object 
