抄録
Seven species, including two new species, of the genus Trichocolea Dumort.: T. iriomotensis T.Katag., T. japonica T.Katag., T. magna T.Katag., T. mollissima (Hook.f. & Taylor) Gottsche, T. pluma (Reinw., Blume & Nees) Mont., T. rudimentaris Steph., and T. tomentella (Ehrh.) Dumort., are recognized for Southeast Asia, including the New Guinea Islands. Distribution data, habitat, taxonomic notes, distinguishing characters of the species, and a key to the species of the genus Trichocolea are provided. Three new synonyms of Trichocolea pluma: Jungermannia tomentella var. javanica Reinw., Blume & Nees, T. samoana Steph., T. tonkinensis Steph., one new synonym of Trichocolea tomentella: T. tomentella f. nodulosa Nees, and one new synonym of Trichocolea rudimentaris: T. fragillima Herzog are proposed. Lectotypes are selected for T. australis Steph. (= T. mollissima), T. striolata Steph. (= T. pluma), T. levifolia Steph. (= T. pluma), and T. rudimentaris Steph. Phylogenetic analyses based on rbcL gene sequences revealed monophyly of Trichocoleaceae in which two clades Eotrichocolea–Leimotra clade and Trichocolea clade were resolved. It is suggested that epicoelocaules, as observed in Trichcocolea and Eotrichocolea, are independently derived from perianth-bearing shoots.
