Final answer:
The phrase 'Into those regions? The Morphean fount' is a metaphorical reference to the god of dreams, Morpheus, symbolizing the source of dreams.
Step-by-step explanation:
The phrase "Into those regions? The Morphean fount" refers to a metaphorical or symbolic concept. In this context, A reference to the god of dreams, Morpheus can be identified, as Morpheus is the god associated with sleep and dreams in Greek mythology. The 'Morphean fount' would metaphorically represent the source of dreams, suggesting a place where the waters of dreams and sleep originate, hence a metaphor for the process or place from which dreams come. Considering the context of mythic inspiration, allusions to mythical fountains, and the representation of other realms, this is less likely to be about a physical location and does not solely represent an allusion to a specific mythical fountain.