Lichens of Canada Exsiccati, Fascicle I, Nos. 1-25
Opuscula Philolichenum, 17: 335-341. 2018. *pdf effectively published online 12October2018 via (http://sweetgum.nybg.org/philolichenum/) Lichens of Canada Exsiccati, Fascicle I, Nos. 1-25 R. TROY MCMULLIN1* AND LYNDSEY SHARP2 ABSTRACT. – A new exsiccati is initiated, Lichens of Canada, disseminated by the National Herbarium of Canada (CANL) at the Canadian Museum of Nature. Thirty-one sets of 25 species from the Hudson Bay Lowlands in northern Ontario and Salt Spring Island in British Columbia are distributed to: B, BG, C, CANB, COLO, DUKE, E, EWU, FH, FR, GZU, H, HMAS, KANU, LD, M, MSC, NBM, NFLD, NY, O, OSU, PMAE, QFA, S, SWSG, TNS, TU, UBC, UPS, WIS. KEYWORDS. – Biodiversity, fungi, lichenology, mycology, natural history collections, scheda. INTRODUCTION Exsiccati are identically numbered sets of dried specimens distributed to herbaria (Sayre 1969, 1971). Their purpose is to disseminate material from particular areas, or of specific groups of taxa, for examination by researchers in other parts of the world (Stafleu 1972, Stevenson 1971). An exchange of duplicate specimens serves a similar function and is often done instead of exsiccati. The benefit of exsiccati however, is that sets are consistent and provide an alternative to sorting through herbaria to locate specimens from a particular region since they are all in one place and usually organised in a catalogue. In Canada, two exsiccati that contain lichens have been distributed in the past by the National Herbarium of Canada (CANL) at what is now the Canadian Museum of Nature. The first, ‘Canadian Lichens’, was prepared by John Macoun and disseminated in two series.
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