The manna ash is a small tree found in Italy, and extending to Switzerland, South Tirol, Hungary, Greece, Turkey and Asia Minor.
Xvi.) P's version of the sending of the manna and quails.
Roscher (Nektar and Ambrosia, 1883; see also his article in Roscher's Lexikon der Mythologic) nectar and ambrosia were originally only different forms of the same substance - honey, regarded as a dew, like manna, fallen from heaven, which was used both as food and drink.
This manna occurs in the form of small, roundish, hard, dry tears, varying from the size of a mustard seed to that of a coriander, of a lightbrown colour, sweet taste, and senna-like odour.