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at intersection of veins. Fruit spherical, flat at both ends, of a 
yellow color. 
3. Thorburn 3 s Mammoth King Pumpkin. — Stems almost 
round, not ridged. Pubescent, not spiny. Leaves not lobed, no 
white spots in angles of veins. Fruit same as No. 5. 
4. Delicious Squash. — Stem rounded, not ridged. Leaves 
not lobed, short petiolate. Flower peduncles short and round, 
covered with fine hairs. Fruit dark green, pointed at distal end. 
5. Symme 3 s Big Hubbard. — Stem more or less rounded. 
Leaf petiole, very long, round. Leaves not lobed, of dark green 
color. Flower peduncle quite long. Fruit dark green, deeply 
furrowed and wrinkled, tapering at distal end. 
DISCUSSION 
In the past, great confusion has existed as to the classification 
of the squashes and pumpkins grown in the United States, for 
many pumpkins should have been called squashes and vice versa. 
By following the key to the species of the genus Cucurbita , as 
given in these outlines, one should have no difficulty in placing 
pumpkins as well as squashes in the proper species. 
CONCLUSION 
The writer feels certain that the Mammoth Pumpkins are not 
pumpkins at all, but squashes belonging to the species Cucurbita 
maxima. Furthermore, he believes that Thorburn’s Mammoth 
Golden Cushaw and Kentucky Field Pumpkins are not pumpkins 
but squashes belonging to the species Cucurbita moschata. 
Department oe Botany, 
Iowa State College. 
