Fig. 4.

Patterns of floral orientation and development established by inhibitory fields of FSBs and floral prophyll(s). (A) Bracteate flower without floral prophyll; (B) bracteate flower with a single lateral floral prophyll; (C) bracteate flower with a single adaxial floral prophyll; (D) bracteate flower with two lateral floral prophylls. Closed circles indicate inflorescence axis, black arcs represent the FSB and pedicel phyllome(s). Grey areas represent inhibitory zones. Numbers indicate the sequence of initiation of outer tepals.