Britton, ?Sci. Surv. Porto Rico& Virgin Isl. 6: 561. 1930.?, 1930.

Britton, ?in Baker & Simmonds, Fl. Trinidad& Tobago 2(4): 267. 1953.?, 1953.

Britton, Britton,, and Britton, ?Bull. Torrey Bot. Club 48(12): 338. 1921.?, 1921.

Britton, ?Mem. Torrey Bot. Club 16: 100. 1920?, 1920.

Britton, ?Mem. Torrey Bot. Club 5: 288. 1894?, 1894.

Britton, ?Bull. Torrey Bot. Club 27: 23. 1900?, 1900.

Britton, ?Bull. New York Bot. Gard. 3: 451. 1905?, 1905.

Britton, ?Ann. New York Acad. Sci. 7: 180. 1893?, 1893.

Rusby and Britton, ?Bull. Torrey Bot. Club 26: 196. 1899?, 1899.

(D. ) Britton and Britton, ?Mem. Torrey Bot. Club 5: 287. 1894?, 1894.

Britton, ?Bull. Torrey Bot. Club 27: 22. 1900?, 1900.

Britton, ?Bull. Torrey Bot. Club 43: 461. 1916?, 1916.

Britton, ?Sci. Surv. Porto Rico & Virgin Islands 6: 370. 1926?, 1926.

Britton, Britton,, and Rusby, ?Mem. Torrey Bot. Club 6: 92. 1896?, 1896.

Britton, ?Bull. New York Bot. Gard. 4: 123. 1905?, 1905.

Rusby and Britton, ?Bull. Torrey Bot. Club 26: 199. 1899?, 1899.

K.  .Schum., Britton,, .Schum., K., Britton,, .Schum., K., and Britton, ?Justs Bot. Jahresber 27, 1: 544.?.

Britton, ?Bull. New York Bot. Gard. 4: 469. 1907?, 1907.