Chiloscyphus gremmenii

Söderström, Lars, Váňa, Jiŕí, Crandall-Stotler, Barbara, Stotler, Raymond E., Hagborg, Anders & Konrat, Matt Von, 2013, Notes on Early Land Plants Today. 43. New combinations in Lophocoleaceae (Marchantiophyta), Phytotaxa 112 (1), pp. 18-32 : 28

Transfer of Chiloscyphus gremmenii to Stolonivector

Chiloscyphus gremmenii was described using a very broad concept of the genus Chiloscyphus (sensu Engel & Schuster 1985). Molecular analyses of a relatively large number of taxa (e.g., Hentschel et al. 2006, 2007) show that within the broadly defined genus were included a number of separate clades, some of which corresponded to described genera (see Söderström et al. 2013). Unfortunately, no specimens of the small, morphologically specialized genus Stolonivector Engel (1991c: 80) have been included in any molecular study to date. However, we conclude that, with acceptance of a narrower circumscription of Chiloscyphus and the additional, better developed material of Chiloscyphus gremmenii now available, Chiloscyphus gremmenii should be transferred to Stolonivector as it agrees with this genus in all characteristics presented by Engel (1991c) except that stolons are not common and gynoecia are on leading shoots. This species is similar to Stolonivector fiordlandiae ( Hodgson 1953: 340) Engel (1991c: 82) and Stolonivector obtusilobus Engel (2009: 337) . The differences can be summarized as follows: stolons relatively rare, leaves heteromorphic, of very variable form, sometimes deeply bi-(tri-)lobed, basal part of the leaves bistratose, gemmae present, gynoecia on leading shoots, and perianth mouth entire. Moreover, Stolonivector gremmenii has larger cells (25-30 × 20-27 µm) than Stolonivector fiordlandiae . Thick-walled cells without trigones and acute leaf lobes separate Stolonivector gremmenii from Stolonivector obtusilobus .