
1) Aquatic plant 2) Berry 3) Berry sized fruit 4) Bite for a herbivore 5) Bite for a frugivore 6) Comestible fruit 7) Comestible berry 8) Culinary berry 9) Culinary fruit 10) Edible little fruit 11) Edible berry 12) Edible berry sized fruit 13) Edible small fruit 14) Edible fruit by the handful 15) Edible fruit 
Found on 
https://www.crosswordclues.com/clue/wampee

1) Pickerelweed 
Found on 
https://www.crosswordclues.com/clue/wampee

• (n.) A tree (Cookia punctata) of the Orange family, growing in China and the East Indies; also, its fruit, which is about the size of a large grape, and has a hard rind and a peculiar flavor. • (n.) The pickerel weed.
Found on 
http://thinkexist.com/dictionary/meaning/wampee/
Wam·pee'  noun  (Botany)  (a)  A tree (
 Cookia punctata ) of the Orange family, growing in China and the East Indies; also, its fruit, which is about the size of a large grape, and has a hard rind and a peculiar flavor. 
 (b)  The pickerel weed. [ Southern U. S.] 
Found on 
http://www.encyclo.co.uk/webster/W/5
  No exact match found.