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Pertusaria pustulata
EOL Text
Canada
Origin: Unknown/Undetermined
Regularity: Regularly occurring
Currently: Unknown/Undetermined
Confidence: Confident
United States
Origin: Unknown/Undetermined
Regularity: Regularly occurring
Currently: Unknown/Undetermined
Confidence: Confident
License | http://creativecommons.org/licenses/by-nc/3.0/ |
Rights holder/Author | NatureServe |
Source | http://explorer.natureserve.org/servlet/NatureServe?searchName=Pertusaria+pustulata |
Rounded Global Status Rank: G4 - Apparently Secure
Reasons: Cosmopolitan in temperate regions (Nash et al. 2002). Grows on bark (Nash et al. 2002). In the greater Sonoran Desert region, it is only known from southern California (Nash et al. 2002).
Thallus: continuous to finely fissured or fissured-areolate, with very thin to thin verrucae; margins: entire, unzoned; upper surface: yellow-gray to green-gray, smooth to finely tuberculate, shiny, seldom dull, epruinose; lacking soredia or isidia; fertile verrucae: concolorous with thallus, ampliariate or erect, numerous, c. 0.3-1.4 mm in diam.; ostioles: 1 or 2-8 per verruca, level, sunken or papillate, often fusing in a central depression to form a pseudolecanorate disc; Apothecia: 1-5 per verruca; disc: 0.4-0.8 mm wide, blackish brown, epruinose; epithecium: dark brown to black, K; hypothecium: hyaline; asci: cylindrical, 160-320 x 35-60 µm, 2-spored (seldom 1- or 3-spored); ascospores: hyaline, ellipsoid to cylindrical, 45-160 x 26-48 µm; spore wall: 2-layered; outer spore wall c. 1-5 µm thick; inner spore wall: 2-8 µm thick, smooth; apices: up to 20 µm thick; Pycnidia: immersed; conidia: bacilliform, 9-16 x 1-1.5 µm; Spot tests: K+ yellow, C+ orange, KC-, P+ yellow to orange, UV+ orange-red; Secondary metabolites: 2-chloro-6-O-methylnorlichexanthone and stictic acid (both major), 4-chloro-6-O-methylnorlichexanthone, constictic, cryptostictic, hypostictic, menegazziaic, thiophaninic acids (all minor).; Substrate and ecology: A temperate corticolous species; World distribution: Pertusaria pustulata is a cosmopolitan corticolous lichen; Sonoran distribution: only known from southern California.; Notes: This species is characterized by a greenish to yellowish thallus, ascomata with ostiola which may dilate and fuse to form a small pseudolecanorate disc, a K- epithecium, 2-spored asci and the presence of stictic acid and 2-chloro-6-O-methylnorlichexanthone. A full discussion of this species is found in Dibben (1980) and Archer and Messuti (1997).
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | Lichen Unlimited: Arizona State University, Tempe. 2002-2011 |
Source | http://symbiota.org/nalichens/taxa/index.php?taxon=54884 |