The specimens CHR 666977 (Isotype of Mastigobryum pusillum Colenso) and CHR 666979 (isotype of Mastigobryum quadratum) were separated from this specimen, CHR 575193, by D. Glenny in Sept 2020.
He recognised that amongst four small pieces of material from Colenso's herbarium, which E.A. Hodgson had sent to K.W. Allison, and which Allison had packeted together as Bazzania hochstetteri, were two small isotypes. Colenso a1419, Hodgson 720, Allison H 2022 is a piece of Colenso's Bazzania pusillum; Colenso a1399, Hodgson 717, Allison H 2020 is a piece of Colenso's Mastigobryum quadratum.
Gibb ES, Jan 2021
Herbarium history:
Before the isotypes were removed the packet CHR 57193, had:
ex herb. Colenso a 1405, a 1399, a 2105, a 1410
[Ex herb. E.A. Hodgson] Nos 714, 717, 718, 2105
The K. W. Allison Collection H 2016, H 2020, H 2021, H 2022