(B. ) Edmonds, ?Kew. Bull. 27: 106. 1972.?, 1972.

(B. ) Edmonds, ?Bot. J. Linn. Soc. 92: 27. 1986.?, 1986.

(B. ) Edmonds, ?Kew Bull. 27: 110. 1972.?, 1972.

(B. ) Edmonds, Edmonds, (L.  ), and Edmonds, (M. ), ?Bot. J. Linn. Soc. 75: 171. 1977.?, 1977.