I saw Bejamin Carp talk about his book Defiance of the Patriots: The Boston Tea Party and the Making of America on CSPAN over the weekend. In the Q&A he mentioned the teas tossed overboard. They were 4 blacks souchong,congou,bohea,? which he forgot. I am sure it was pekoe. Also two greens hyson and singlo. Singlo did not ring a bell at all. I wasnt even sure of the spelling which seems to right looking on the Internet. However the corresponding chinese characters arent so obvious. I came across an old chinese dictionary on Google books which groups tea names and mentions singlo tea. The two characters as I can make out are ??. I am sure of the first and ? on the second due to the blurred print. My Google Book character reference is
Jim