Radula erigens (M.A.M.Renner et Braggins) M.A.M.Renner, 2013

Renner, Matt A. M., Söderström, Lars, Hagborg, Anders & Konrat, Matt Von, 2013, Notes on Early Land Plants Today. 29. A new combination in Radula (Radulaceae, Marchantiophyta), Phytotaxa 81 (1), pp. 12-14 : 12-13

publication ID	https://doi.org/ 10.11646/phytotaxa.81.1.5
DOI	https://doi.org/10.5281/zenodo.5067891
persistent identifier	https://treatment.plazi.org/id/3A018458-FFEE-E315-1AEC-EF34FA20FC41
treatment provided by	Felipe
scientific name	Radula erigens (M.A.M.Renner et Braggins) M.A.M.Renner
status	comb. et stat. nov.

Treatment

Radula erigens (M.A.M.Renner et Braggins) M.A.M.Renner , comb. et stat. nov.

Basionym:— Radula cordiloba subsp. erigens M.A.M.Renner et Braggins, J. Hattori Bot. Lab. 97: 45, 2005 ( Renner 2005).

Type: NEW ZEALAND. Kermadec Is.: Raoul Island , 1956 R . Cooper (holotype AK 44347 ex AKU063120 View Materials !) .

Representative specimens examined:— NEW ZEALAND. Kermadec Is.: Raoul Island , Denham Bay Track, above Orange Cove, 29°14’556.9”S 177°55’54.1”W, 208 m, 18 May 2011, P.J. de Lange K742 (AK325678) ; Raoul Island , Moumoukai Track, 29°16’0”S 177°54’0”W, 384 m, 8 May 2009, P.J. de Lange K224 & D.C. Havell (AK313206) GoogleMaps ; Raoul Island , Moumoukai Track, 29°16’0”S 177°54’0”W, 336 m, 15 May 2011, P.J. de Lange K741 (AK325676) GoogleMaps ; Raoul Island , Denham Bay Track, 29°15’39.5”S 177°56’15.7”W, 271 m, 18 May 2011, P.J. de Lange K744 (AK325681) GoogleMaps ; Raoul Island , 1956, R. C. Cooper 44350 (CHR558807) .

Notes:—To date known with certainty only from Raoul Island in the Kermadec Group, the northern most outlier of the New Zealand Botanical Region. On Raoul Island R. erigens grows in sheltered ravines, typically as a saxicol on exposed basalt on ravine walls, but also as an epiphyte on the bases of palm trunks. Radula erigens co-occurs with Lejeunea anisophylla Montagne (1843: 263) , L. exilis ( Reinwardt et al. 1824: 227) Grolle (1979: 353) , L. gracilipes ( Taylor 1846: 385) Spruce (1884: 213) , Lopholejeunea sp. and Plagiochila pacifica Mitten (1873: 407) , Papillaria crocea ( Hampe 1853: 715) Jäger & Sauerbeck (1877: 267) and Echinodium umbrosum ( Mitten 1859: 92) Jäger & Sauerbeck (1877: 314) . Occurrence on islands elsewhere throughout the Pacific would not be unexpected, but to date examination of herbarium material and recent collecting activities in the Cook Islands (Rarotonga) and Fiji (Viti Levu, Kadavu, Taveuni) have failed to locate this species.

Also examined:— Radula longispica Steph. INSULA WALLIS. Unea, 1902, Joly, herb Corbière 113. (Lectotype fide Yamada 1979, G-42698! [=G-15438!] 1); INSULA WALLIS. Unea, 1902, Joly (Isolectotype, FH!). The specimen identified as lectotype is cited as a holotype by So (2006). As no specific collection was indicated in the protologue, and there is more than one duplicate, it must be regarded as a lectotype instead.