Chaenotheca nitidula, A New Species of Calicioid Lichen from Northeastern North America

Tibell, Leif; Koffman, Anna

doi:10.1639/0007-2745(2002)105[0353:cnanso]2.0.co;2

Cited by 12 publications

(4 citation statements)

References 8 publications

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“…In total c. 600 specimens were selected and curated as voucher material and have subsequently been deposited in the herbaria of the Atlantic Forestry Centre and the University of British Columbia (UBC, Vancouver). Taxonomy and nomenclature follow Goward (1999), with the following exceptions: 1) Chaenotheca brunneola includes C. hygrophila and C. sphaerocephala ; 2) C. gracillima includes C. nitidula (Tibell & Koffman 2002); 3) C. trichialis includes C. stemonea . Titov (2006) recently synonymized Chaenothecopsis sp.…”

Section: Methodsmentioning

confidence: 99%

Calicioid diversity in humid inland British Columbia may increase into the 5th century after stand initiation

Goward

Arsenault

2018

The Lichenologist

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Maintenance of biodiversity in managed forested landscapes requires detailed knowledge of the ecological requirements of specialist organisms linked to key microhabitats. Here we examine the relationship of 37 lichenized and unlichenized epiphytic calicioid species to stand age and substratum type in seven pairs of mid-seral (70–165 y) and old (220–470 y) forest stands in humid east-central British Columbia. Based on our inventory of eight host tree species, total calicioid diversity and mean species richness are highest in old stands, with 12 species not detected and nine additional species much less frequent in mid-seral stands.Thuja plicatasupports by far the highest level of total calicioid diversity, with 31 of 37 species; mostly associated with very old trees. Owing primarily to the late recruitment of lignicolous calicioids, stand-level calicioid richness continues to increase into the 5th century after stand initiation. Our study thus has two major findings pertinent to the maintenance of forest biodiversity in managed forests: first, stand-level calicioid richness increases slightly for at least three centuries past the acquisition of old-growth status; second, remnant trees and snags carried forward into mid-seral, regenerating stands enhance overall calicioid species richness. These results suggest that very old old-growth (= ‘antique’) forests might play an important role in the long-term maintenance of calicioid species richness, further suggesting that the standard practice of lumping all forests above a set age into a single old-growth category is not ecologically tenable for all taxonomic groups.

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Section: Methodsmentioning

confidence: 99%

Calicioid diversity in humid inland British Columbia may increase into the 5th century after stand initiation

Goward

Arsenault

2018

The Lichenologist

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“…The large number of new species and new North American records of Chaenotheca in recent decades have been reported in numerous publications (e.g., Harris 1995;Rikkenin 1998;Selva and Tibell 1999;Tibell and Koffman 2002;Selva 2013;Allen and McMullin 2015). Selva (2014) developed a key to many of these species (19 of the 25), those occurring in the Acadian Forest region of northeastern North D r a f t America, and McCune (2017) developed a key to the 21 species in the Pacific Northwest.…”

Section: Introductionmentioning

confidence: 97%

“…From British Columbia. Tibell and Koffman (2002) then described C. nitidula Tibell from Maine and New Brunswick. Selva (2013) also described Chaenotheca erkahomattiorum Selva from the northeast.…”

Section: Introductionmentioning

confidence: 99%

A synopsis ofChaenothecain North America, including a new species from southern Ontario,C. selvae, supported by morphometric analyses

McMullin

Maloles

Selva

et al. 2018

Botany

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We describe and illustrate a new species of calicioid lichen from southern Ontario, Chaenotheca selvae. We place it in Chaenotheca because of its lichenized thallus with a Stichococcus photobiont, a brown mazaedium, and ascospores that are brown, spherical, and single-celled (3.0–3.6 μm in diam.). It differs from other species of Chaenotheca by its photobiont, non-ornamented ascospores, straight stalks, and producing orange-brown pruina on the mazaedium, excipulum, and upper portion of the stalk when mature. Using a detrended correspondence analysis we identified 25 taxa, including the sp. nov., analyzing 22 morphological characters. Our results provide evidence of chemical and morphometric variation among species of Chaenotheca. We also provide a key for the identification of the 25 Chaenotheca species in North America.

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“…Calicioid lichens and fungi are characterized by evanescent asci that form a mazaedium of passively dispersed spores. New species have been described recently from Africa and Madagascar (Tibell 2000), Europe (Tibell 1996(Tibell , 1999a, India (Tibell 2006), Japan (Tibell & Thor 2003), Australasia (Tibell 1983(Tibell , 1987, eastern Russia (Titov & Tibell 1993;Tibell & Titov 1995), South America (Tibell 1998), Costa Rica (Tibell 1982), and North America (Peterson & Rikkinen 1998;Rikkinen 1999Rikkinen , 2003aSelva & Tibell 1999;Tibell & Koffman 2002). This 'Caliciales' assemblage, once considered a paragon of monophyly united by mazaedia, has turned out to be suspiciously polyphyletic (Tibell 1984) and was ultimately rendered superfluous by phylogenetic analy-ses (Gargas & Taylor 1995;Wedin & Tibell 1997).…”

Section: Introductionmentioning

confidence: 99%

Calicium sequoiae, a new lichen species from north-western California, USA

Williams

Tibell

2008

The Lichenologist

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Abstract:We describe Calicium sequoiae as a new species of lichenized Ascomycota from north-western California, USA. The species is distinguished morphologically from other known members of Calicium by its stalks that react I+ blue, mature ascospores that are ornamented with spiral ridges, and apothecia that produce prominent white pruina. It is also the only Calicium known to produce thamnolic acid as a major secondary substance. Sequences from the ITS-region showed C. sequoiae to be unique among calicioid Physciaceae, and phylogenetic analysis positioned it close to C. adspersum, C. chlorosporum, C. lenticulare, Cyphelium notarisii, and C. tigillare. Thus far, Calicium sequoiae has been collected only from old-growth redwood (Sequoia sempervirens) forests, where it occurred on thick, fibrous bark of large redwood trees. A key to the 12 species of Calicium known from the Pacific Northwest is provided.

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Chaenotheca nitidula, A New Species of Calicioid Lichen from Northeastern North America

Cited by 12 publications

References 8 publications

Calicioid diversity in humid inland British Columbia may increase into the 5th century after stand initiation

Calicioid diversity in humid inland British Columbia may increase into the 5th century after stand initiation

A synopsis ofChaenothecain North America, including a new species from southern Ontario,C. selvae, supported by morphometric analyses

Calicium sequoiae, a new lichen species from north-western California, USA

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