A GENERIC REVISION OF THE LEMBOPHYLLACEAE

抄録

  The results of a generic-level revision of the family Lembophyllaceae (Musci) are presented.

  During the history of the Lembophyllaceae, 15 genera have been included in the family. These genera have been reviewed and their relations to Lembophyllum determined. The following genera previously placed in the Lembophyllaceae are here rejected from the family: Isotheciopsis, Dolichomitra and Dolichomitriopsis (placed in the Meteoriaceae); Acrocladium (Amblystegiaceae); Rigodium (Rigodiaceae); Tripterocladium and Elmeriobryum (Hypnaceae); Isothecium and Plasteurhynchium (Brachytheciaceae); Porotrichodendron, Dixonia and Porotrichopsis (Thamnobryaceae).

  Isotheciopsis, Dolichomitra and Dolichomitriopsis are rejected from the Lembophyllaceae on the basis of their Isobryalean peristomes. The remaining genera share a Hypnobryalean peristome with the Lembophyllaceae, but are rejected from the family on gametophytic grounds.

  The Lembophyllaceae is here treated as containing five genera. Of the genera previously placed in the Lembophyllaceae, only Lembophyllum, Camptochaete, Weymouthia and Fifea are retained. Fallaciella, a segregate of Camptochaete is also included in the Lembophyllaceae. New sections are described in both Lembophyllum (sect. Looseria for L. orbiculata, transferred from Camptochaete) and Weymouthia (sect. Catenula for W. cochlearifolia).

  The Lembophyllaceae is characterised by: (i) pleurocarpous, plagiotropic, weft-forming or pendent growth form, (ii) commonly epiphytic habitat, (iii) generally ovate-oblong, concave leaves, (iv) rhombic upper laminal cells, (v) prorate and linear midlaminal cells, (vi) short, double costa (sometimes single), (viii) exserted capsules, and (ix) hypnoid peristome.

  The family is distributed: Indonesia (Flores), Papua New Guinea, Solomon Islands, Vanuatu, Fiji, eastern Australia, New Zealand and Hawaii.