Asa Gray (November 18, 1810 - January 30,1888) is considered the most important American botanist of the 19th century. He was instrumental in unifying the taxonomic knowledge of the plants of North America. Of Gray's many works on botany, the most popular was his "Manual of the Botany of the Northern United States, from New England to Wisconsin and South to Ohio and Pennsylvania Inclusive". Wikipedia
The definitive Wikipedia entry for Asa Gray. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Asa_Gray
...editions Scientific Papers of Asa Gray Houghton, Mifflin - 1889 Scientific Papers of Asa Gray Houghton, Mifflin - 1889 show more Basic HTML mode About Google Book Search - Book Search ... books.google.com/books?ie=UTF-8&vid=OCLC01208686&id=wpAX-...
...editions Scientific Papers of Asa Gray Houghton, Mifflin - 1889 Scientific Papers of Asa Gray Houghton, Mifflin - 1889 show more Basic HTML mode About Google Book Search - Book Search ... books.google.com/books?ie=UTF-8&vid=OCLC01208686&id=IS_s3...