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98 Small forms of Tetraplodon angustatus B. & S., and Splachnum ampullaecum Linn., closely resemble this species. The first, however, has a dimidiate calyptra, extending to the base of the sporangium, and only a monoicous inflorescence; the second has broader and less attenuated leaves, narrowed at the base, and an exserted capitate columella in the dried capsule: in both the apophysis of the capsule is much larger, particularly in the last, where it is of a deep purple color.

TAB. 58.—