by Paul Carpenter Standley

1916

by Paul Carpenter Standley

1926

by Paul Carpenter Standley

1928

by Paul Carpenter Standley

1924

by Gerrit Smith Miller, Paul Carpenter Standley

1912

by Paul Carpenter Standley

1926

by Paul Carpenter Standley

1912

by Gerrit Smith Miller, Joseph Nelson Rose, Robert Stratham Williams, William Ralph Maxon, Paul Carpenter Standley

1916

by Agnes Chase, Albert Spear Hitchcock, Charles Vancouver Piper, Emery Clarence Leonard, Paul Carpenter Standley, Sidney Fay Blake

1927

by Paul Carpenter Standley

1930

by Smithsonian Institution

1927