Flower Ornament Scripture: Formation of Worlds, p. 189:
"Children of Buddha, the oceans of worlds have various different forms and characteristics. That is to say, some are round, some square, some neither round nor square. There are infinite distinctions. Some are shaped like whirlpools, some like mountains of flames, some like trees, some like flowers, some like palaces, some like living creatures, some like Buddhas. There are as many forms such as these as there are atoms in an ocean of worlds."
In the verse section:
"Some are round, some are square,
Some triangular, some octagonal;
Gemstone-wheel shaped, lotus blossoms, and so on:
All are different, according to deeds."