Observation 185577: Ingvariella bispora (Bagl.) Guderley & Lumbsch

Not much information on this species. [but see comment below] Of my references it is only mentioned by Noble and in McCune’s Miscellaneous Keys as "on siliceous roc, montane to alpine in semi-arid climates: with a broad world distribution; known from Wyoming. He doesn’t mention Noble’s specimen.
Noble collected it as Diploschistes bisprorus on “HCl- sandstone at a maritime site on Saltspring Island” [not far from Lopez Island]
The North America Checklist has both D. bisporus and I. bispora in boldface as accepted names, but apparently the former should appear in normal font as a synonym.
Here’s Fernandez-Brime et al. – http://www.mycologia.org/content/103/4/755.full


on Chadwick HillI. bispora on rock ledge in left of person in photo

Proposed Names

83% (1)
Eye3 Eyes3
Used references: Noble, W. J. (1982) The Lichen Flora of the Coastal Douglas-fir Dry Subzone of British Columbia. Ph.D. Thesis, University of British Columbia, Reprinted and nomenclaturally updated in 1996 by Bruce McCune with per mission of the author.;
McCune, Bruce (2007) Miscellaneous Keys to Microlichens of the Pacific Northwest of North America;
T. L. Esslinger (2012) A Cumulative Checklist for the Lichen-forming, Lichenicolous and Allied Fungi of the Continental United States and Canada, Vers. 19
Based on microscopic features: spores 2/ascus, muriform, brown at maturity, ave 46 × 22u

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Thanks for looking!
By: Richard Droker (wanderflechten)
2014-11-12 18:04:34 CST (-0600)

Thanks Jason.

Great observation
By: Jason Hollinger (jason)
2014-11-10 15:41:31 CST (-0600)

I wish I had something useful to contribute.

I don’t have access to the original description of the genus:

Guderley, R., H.T. Lumbsch and G.B. Feige. 1997. Ingvariella, a new genus in the Thelotremataceae (lichenized Ascomycotina). Nova Hedwigia 64: 147-154.

Bruce Ryan has very little to say on the subject:

Differs from Diploschistes in lacking a true exciple.

Ingvariella bispora (Bagl.) Guderley & Lumbsch
Spores 1-2 per ascus, hyaline to brownish, broadly ellipsoid, 5-12-septate transversely, 2-5-septate longitudinally. Thallus uniform, tightly attached, rimose-areolate, matt to shiny, gray to brown, not pruinose; aroeles 0.2-1.6 mm diam., to 1 mm thick, irregularly polygonal, flat. Apothecia urceolate, sunken, to 1.3 mm diam., roundish; disc blackish, slightly pruinose; proper exciple blackish, 70-100 um thick, pseudoparenchymatous; hymenium 90-120 um high; hypothecium hyaline, 10-15 um; paraphyses simple, flaccid, 1-1.5 um thick; asci cylindrical, 80-110 × 15-30 um. Thallus K-, C-, P-. UV- (no substances). On siliceous rocks, montane to alpine in arid or semi-arid areas. Wyoming, British Columbia, possibly Washington.

I notice that he, also, says nothing about perispores.

The one pictured in the French site has an extremely broad perispore — maybe it’s just very faint because it’s so diffuse?

By: Richard Droker (wanderflechten)
2014-10-29 08:39:52 CDT (-0500)

A photo at http://naturainneustria.blog.fr/... showa a perispore. Using india ink I could not find this. Don’t know how significant this is.

Additional references with descriptions – Lumbsch in Nash III, T.H., Ryan, B.D., Diederich, P., Gries, C. and Bungartz, F. (eds) (2004) Lichen Flora of the Greater Sonoran Desert Region, Volume 2 (see at http://eol.org/pages/198796/overview including map which shows most specimens collected in southeast Australia and Greece) and Galloway, D. J. (2007) Flora of New Zealand, Lichens – do not mention perispore. Suspect the Natura In Neustria photos are something else (also show only 1 spore/ascus)

Created: 2014-10-25 20:55:59 CDT (-0500)
Last modified: 2014-10-29 19:25:51 CDT (-0500)
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