Diplotomma alboatrum (Hoffm.) Flotow 227760

Description:

Description: Diplotomma alboatrum (Hoffm.) Flotow Image location: Lummi Island, Whatcom Co., Washington, USA on Si rock in salt spray zone very distinctive spores which look (faintly) 1-septate but develop into multiiple round locales (not oil bodies) as Buellia alboatra in Nash et al. Apparently D. chlorophanum which was also found nearby ( https://mushroomobserver.org/97301?q=Nt0q ) is considered by some to be a variety of D. alboatra which contains norstictic acid. It does differ is some other characteristics though. Interesting that both are found in the same small area. Used references: Smith, C.W., Aptroot, A., Coppins, B.J., Fletcher, A., Gilbert, O.L., James, P.W. and Wolseley, P.A. (2009) The Lichens of Great Britain and Ireland; Nash III, T.H., Gries, C. and Bungartzk, F. (ads) (2007) Lichen Flora of the Greater Sonoran Desert Region, Volume 3; 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. Based on microscopic features: epihymenium brownish; hymenium 60u tall; hypothecium brownish; spores 8/ascus average 17×13; paraphyses 2u diameter, 4u diameter at tip Based on chemical features: Thallus K neg, no crystals with K : For more information about this, see the observation page at Mushroom Observer. English | español | français | italiano | македонски | മലയാളം | português | +/−. Date: 14 June 2012. Source: : This image is Image Number 227760 at Mushroom Observer, a source for mycological images. This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing. English | español | français | italiano | македонски | മലയാളം | português | +/−. Author: : This image was created by user Richard Droker (wanderflechten) at Mushroom Observer, a source for mycological images.You can contact this user here. English | español | français | italiano | македонски | മലയാളം | português | +/−.