(B. ) J.F.Macbr., J.F.Macbr.,, J.F.Macbr.,, and J.F.Macbr., ?Publ. Field Columbian Mus., Bot. Ser. 8: 111. 1930.?, 1930.

(B. ) J.F.Macbr. and J.F.Macbr., ?Publ. Field Mus. Nat. Hist., Bot. Ser. 8: 109. 1930?, 1930.