Analysis of herbarium collections of sporulating Zygodon stirtonii suggests recognition at variety level

[摘要] During revision of Zygodon stirtonii from the Netherlands no intermediates between Z. stirtonii and Z. viridissimus s.s. were found, even when the taxa were growing in mixed populations. From a total number of about 100 Dutch collections of Z. stirtonii, 26 had sporophytes, the majority of them dating back to the 19th century. Sporulating herbarium specimens were analysed for taxonomic and sexual composition. All male, female and sporulating individuals were counted in selected coherent samples from luxurious collections.

[学科分类] 植物学