A Potamoi river god gives instructions on how to collect this stuff to a girl who almost drowned herself in him. Phrixus gives this stuff to a king as a gift of gratitude (15[1])for being (15[1])saved from a sacrifice plot devised by his step-mother Ino. To avoid the poisonous creatures central to her second task given by Aphrodite, Psyche (15[1])collects this stuff from thorn bushes at night. (15[1])This stuff was (*) hung on an oak (10[1])tree in a grove sacred to Ares, where it was guarded by a (-5[1])dragon (-5[1])whose teeth (-5[1])could become soldiers. King Iolcus gives a (10[1])man who arrived at his court with only one sandal a challenge involving this (10[1])stuff. Orpheus, Heracles, and several other Greek heroes later join that challenge to obtain this stuff. For 10 points, name this material Jason fetched with the Argonauts. (10[3])■END■