Andrewsianthus perigonialis
(Hook.f. &Taylor) R.M.Schust.Plants forming mats, golden- or chestnut brown, sometimes becoming flagelliform at shoot tips. Branches emerging from leaf axils at their dorsal side or centred on the basal centre of leaf. Leaves oblong to ovate in outline, bilobed or rarely trilobed, 300–825 μm long, 225–750 μm wide, widely-spreading, remote to contiguous, entire or with a slime papilla near base of dorsal margin; lobes 1/9–1/3 length of leaf, usually with ventral lobe larger, acute or obtuse, sometimes the dorsal lobe rounded, separated by V-shaped to lunate sinus. Underleaves absent or vestigial and composed of 1–2 stalked slime papillae. Laminal cells oblong to rounded polygonal or rounded quadrate, 10–33 μm long, 10–23 μm wide, smallest at margin, smooth or nearly so, with 2–7 oil bodies; oil bodies grey, spherical to ellipsoid, finely granular. Bracts of innermost series 3-lobed, with blunt apices and entire margins. Bracteoles present, bilobed, entire or with a single tooth, fused to one bract for up to 0.45 of its length.
Recorded once on a well-sheltered rock beside a fast-flowing stream in the alpine zone on Mount Buffalo. Also, Tasmania New Zealand and the Falkland Islands.
The one Victorian collection identified as this species have acute lobes that are up to 1/3 of the leaf length. This differs from type material of A. perigonialis from New Zealand that has rounded or blunt leaf lobes to a ¼ of the leaf length, but matches plants described as A. confusus from New Zealand (Schuster 1963) and A. planifolius from the Falkland Islands (Engel 1972), that have been synonymised with A. perigonialis by Váňa et al. (2013).
Engel, J.J. (1972). The genus Andrewsianthus in South America and the Falkland Islands. The Bryologist 75: 325–334.
Engel, J.J. & Glenny, D. (2008). A Flora of the Liverworts and Hornworts of New Zealand. Volume 1. Missouri Botanical Garden Press: St Louis.
Schuster, R.M. (1963). Studies on antipodal Hepaticae I. Annotated key to the genera of antipodal Hepaticae with special reference to New Zealand and Tasmania. Journal of the Hattori Botanical Laboratory 26: 185–309.
Váňa, J., Söderström, L., Hagborg, A. & von Konrat, M. (2013). Notes on early land plants today. 32. New Synonyms in Andrewsianthus and a transfer to Tritomaria (Lophoziaceae, Marchantiophyta). Phytotaxa 81: 22–25.
Spinning