Are there any clovers which are growing wild in United States which are toxic if eaten (by a human)?

Question

Are there any clovers which are growing wild in United States which are toxic if eaten (by a human)?

Answer 1

The Trifolium species:

T. hybridum, alsike clover

http://plants.usda.gov/java/profile?symb...

http://www.scib.gc.ca/pls/pp/ppack.info?...

T.pratense, red clover

http://plants.usda.gov/java/nameSearch

http://www.scib.gc.ca/pls/pp/ppack.info?...

T.repens, White clover

http://plants.usda.gov/java/profile?symb...

http://www.scib.gc.ca/pls/pp/ppack.info?...

are barely poisonous to animals. They are not reported to be toxic to humans, because nobody would like to eat an amount of clover large enough to be poisonous.

Their green parts contain the ( also for humans ) toxic substances

thiocyanates:

( http://en.wikipedia.org/wiki/Thiocyanate ),

cyanogenic glycosides > see classification:

( http://en.wikipedia.org/wiki/Glycoside ),

and phyto-oestrogenes:

http://en.wikipedia.org/wiki/Phytoestrog...

Trifolium pratense additional contains calcium oxalate:

http://en.wikipedia.org/wiki/Calcium_oxa...

http://www.sciencedirect.com/science?_ob...

Some species of pea family contain alkaloids toxic for humans, especially in the seed coats, but no member of  clover tribe.