Rumex acetosella
Sheep Sorrel or Sour Grass
Edible for humans slightly lemony. I grew up nibbling the stuff. Anyone know if it's crabby safe?
http://www.nps.gov/plants/color/northwe ... Ruac1f.gif (picture link)
Sour Grass
sorrels
sorrels are generally thought to be safe or non-toxic, but they should be fed in small amounts and not on a regular basis because they are very high in oxalic acids (that's what makes them sour) which blocks absorption of minerals including calcium. It may help to steam them to inactivate some of the oxalic acids. Spinach is another one hight in oxalic acid or oxalates.
let me know
Let me know what the crabs think of it! Feel free to post it on my blog (as a comment) if you want to share your experience with my readers.