I doubt very much that Beckett 55 represents a single collection. The material at left (including that in packet) [CHR 623773] is Rhynchostegium tenuifolium; the material at right [CHR 630881] is R. laxatum; and the material mounted below right is R. tenuifolium [CHR 630886]. This specimen is cited by Beckett in Trans. N.Z.Inst. 25: 300 (1893).
Allan Fife, May 2004