Osmunimunda ruggii (R.M.Tryon) X.Wan & Li Bing Zhang, 2022

Wan, Xia & Zhang, Li-Bing, 2022, Three new fern names of hybrid genera and four new combinations in Athyriaceae, Osmundaceae, and Thelypteridaceae, Phytotaxa 575 (1), pp. 104-108 : 105

publication ID	https://doi.org/ 10.11646/phytotaxa.575.1.8
DOI	https://doi.org/10.5281/zenodo.7409817
persistent identifier	https://treatment.plazi.org/id/DA59FC37-FF9C-FFDD-FF6C-9B0C952CD4C1
treatment provided by	Plazi
scientific name	Osmunimunda ruggii (R.M.Tryon) X.Wan & Li Bing Zhang
status	comb. nov.

Treatment

× Osmunimunda ruggii (R.M.Tryon) X.Wan & Li Bing Zhang View in CoL , comb. nov.

Basionym: Osmunda × ruggii R.M. Tryon (1940: 65) View in CoL ≡ “ × Osmuntonia ruggii (R.M.Tryon) Hong M.Liu, Schuettp. & H.Schneid. View in CoL ” (2020: 999), nom. inval.

Type:— USA. Connecticut: Hartford , cult., 20 June 1934, H. G . Rugg, s.n. (holotype GH00021739 ) .

Notes: This nothospecies is a hybrid between Claytosmunda claytoniana ( Linnaeus 1753: 1066) Metzgar & Rouhan in PPG I (2016: 594) and Osmunda regalis var. spectabilis ( Willdenow 1810: 98) A. Gray (1856: 600) . It has intermediate morphology of the parents, such as fertile fronds, segment size, vein branching, and segment margins. Although its parents occur together in a large area, mature hybrids are difficult to find due to its rarity. Perhaps they are incompatible with other plants, or there are strong incompatibility barriers between the parents ( Tryon 1940, Wagner et al. 1978).

Distribution: Northeastern U.S.A.