Cyclosorus interruptus (Willd.) H.Ito

Yañez, A., Marquez, G. J., Berrueta, P. C. & García, R. A., 2021, An urban fern refugium: Municipal Ecological Reserve of Avellaneda (Eco Área) (Buenos Aires, Argentina), Blumea 66 (3), pp. 227-235 : 233

Cyclosorus interruptus (Willd.) H.Ito — Fig. 3i

Origin — Native. It is a cosmopolitan species, widely distributed in the Americas from the southern US, northern Mexico and Central America to Bolivia, Paraguay and Uruguay. In Argentina, it is widely distributed in the Northwest, Center and Northeast.

Habitat & Ecology — Terrestrial, marsh species. It forms dense populations at the edge of low flow streams, in flooded soil.

Location within the reserve — Grows both in exposed places, next to Iris pseudacorus , and in the shady undergrowth, next to temporary streams that run through the reserve.

Observations — As was mentioned for Gastoniella chaerophylla and Pteris tremula , during the collections carried out in 2020, new populations of this species were found growing on the edges of the tourist walkways.

Illustration and morphological description reference — Ponce (2016).

Studied specimens. ARGENTINA, Buenos Aires,Mun.Avellaneda, Reserva Ecológica Municipal de Avellaneda (Eco Área), Yañez et al. 477 (BA, LP), 18-IX-2018 ; Yañez et al. 492 (BA), 31-V-2019 .