x Cystocarpium roskamianum Fraser-Jenkins

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作   者：

Harry Roskam; 

作者机构：

Leiden;  Naturalis Biodiversity Center;  The Netherlands; 

期刊名称：

Pteridologist

i s s n：

0266-1640

年卷期：

2022 年 7 卷 Pt.4 期

页   码：

282-283

页   码：

摘   要：

I found the plant discussed here in the early eighties of the last century, in the North-Eastern Pyrenean Mountains in France. The plant was growing between clumps of two species, Gymnocarpium dryopteris and Thelypteris connectilis, that I dug out inthe mountain. It was a strange one; I could not recognize the species. It was impossible that the plant was crossed in my garden, as some pteridologists from France have suggested. The clump was one year old and the emerging plant was mature. It was also the first year of my serious fascination with ferns. Until that moment I had not sown and grown ferns, let alone made hybrids. For many years it was unclear what species the plant belonged to. In that time I asked many pteridologists, without success.