Rusby and Rusby, ?Mem. Torrey Bot. Club 6: 89. 1896.?, 1986.

Rusby, ?Mem. Torrey Bot. Club 6: 88. 1896 [1895?].?, 1986.

Rusby and Rusby, ?Mem. Torrey Bot. Club 6: 87. 1896.?, 1986.