Like other Mesoamerican peoples, the traditional Maya recognize in their staple crop, maize, a vital force with which they strongly identify. This is clearly shown by their mythological traditions. According to the 16th-century Popol Vuh, the Hero Twins have maize plants for alter egos and man himself is created from maize. The discovery and opening of the Maize Mountain – the place where the corn seeds are hidden – is still one of the most popular of Maya tales. In the Classic period (200-900 AD), the maize deity shows aspects of a culture hero. Female and male deities In Maya oral tradition, maize is usually personified as a woman — like rice in Southeast Asia, or wheat in ancient Greece and Rome. The acquisition of this woman through bridal capture constitutes one of the basic Maya myths. In contrast to this, the pre-Spanish Maya aristocracy appears to have primarily conceived of maize as male. The classic period distinguished two male forms: a foliated (leafy) maize god and a tonsured one. The foliated god is present in the so-called maize tree (Temple of the Foliated Cross, Palenque), its cobs being shaped like the deity's head. A male maize deity representing the foliated type and labeled God E is present in the three extant Maya hieroglyphic books. Whereas the foliated maize god is a one-dimensional vegetation spirit, the tonsured maize god's functions are much more diverse. When performing ritually, the latter typically wears a netted jade skirt and a belt with a large spondylus shell covering the loins. On stelae, it is a queen rather than a king that tends to represent the tonsured maize god. The queen thus appears as a maize goddess, in accordance with the Mayan narrative traditions mentioned above. Late Preclassic and Classic Maya mythology Many classic Maya paintings, particularly those on cacao drink vessels, testify to the existence of a rich mythology centered on the tonsured maize god. The late preclassic murals of San Bartolo demonstrate its great antiquity. Several theories, with varying degrees of ethnographic support, have been formulated to account for episodes such as the maize deity's resurrection from a turtle, his canoe voyage, and his transformation into a cacao tree. Popol Vuh twin myth extension The tonsured maize god is often accompanied by the hero twins. Following Karl Taube, many scholars (such as Michael D. Coe) believe that the resurrected tonsured maize god of