Solenostoma major (Hattori, 1950) Bakalin & Vilnet, 2012

Váňa, Jiří, Söderström, Lars, Hagborg, Anders & Konrat, Matt Von, 2013, Notes on Early Land Plants Today. 44. Comments on sexuality in Solenostoma (Solenostomataceae, Marchantiophyta) and on some newly described taxa, Phytotaxa 152 (1), pp. 33-47 : 39

Solenostoma major

Bakalin & Vilnet (2012: 574) elevated Solenostoma pyriflorum var. major to specific rank. The molecular data for this and their value was already discussed under Solenostoma rossicum above. Morphologically, this taxon is separated from Solenostoma pyriflorum by the following characteristics: a) “deep purple rhizoid coloration versus colorless to brownish and light rose in S. pyriflorum ”. However, the rhizoids in the Japanese plants including the type are “colorless or purple” (cf. Amakawa 1960: 62). b) “wide, flattened, undulate and distant leaves versus concave, not undulate and contiguous leaves”. Again, Japanese plants including the type have “somewhat concave” and not undulate leaves (cf. Amakawa 1960: 62). c) A tendency to occupy wet habitats. This character is based on only two specimens from South Korea collected on “banks of stream, where it is commonly growing submerged” (but Solenostoma pyriflorum also occurs on wet rocks). Thus, we regard the taxon as a modification that with the present knowledge at most deserves recognition at varietal rank.