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Bacidia heterochroa
EOL Text
Thallus: crustose, usually continuous, smooth, areolate, rimose, or entirely without cracks; areoles: discrete, convex; prothallus: often present as a thin black line; surface: almost white, ±gray, rarely gray-green or grayish yellow, warted, or wrinkled; Apothecia: at first flat, remaining so or rarely becoming convex, 0.5-1.1 mm in diam.; disc: basically purple-brown to black but often mottled with paler pinkish, brownish, or purplish hues, epruinose or rarely with a thin white pruina on a few young apothecia; margin: concolorous with or paler than disc (especially below), at first distinct, at first raised above disc, soon level with with disc, persistent or rarely excluded; upper part of margin; exciple: laterally 50-120 µm wide, without crystals or rarely with radiating clusters of crystals, interior colorless, yellowish or orange-brown to brown-orange, fading below, upper part of edge darker than interior, brown to red-brown (K+ purplish, N+ orange), fading below; edge: with single cell layer of enlarged cell lumina (up to 6 µm wide); epithecium: ±brown (K+ purplish, N+ orange) in distinct layer; pigment mostly confined to paraphysis walls; hymenium: hyaline, 75-115 µm tall; paraphyses: 0.8-1.6 µm wide in mid-hymenium, apices ±clavate or not swollen, 1.2-4 µm wide, with distinct hoods of brown pigment; hypothecium: colorless or pale yellow (K+ intensifying, N-); asci: clavate, 8-spored; ascospores: hyaline, (3-)7-15-septate, acicular, straight to curved to sigmoid, 32-73 x 2.5-4.3 µm; Pycnidia: ±immersed in thallus, brownish or black, 40-100 µm in diam.; conidia: simple, filiform, curved, 5-18 x 0.8-1 µm; Spot tests: all negative; Secondary metabolites: none detected.; Habitat and ecology: on bark of various broad-leaved trees; World distribution: pantropical, extending into warm-temperate, coastal areas of the world, known from all continents and possibly the most widespread species of Bacidia on earth; Sonoran distribution: known from a few localities on the Channel Islands and adjacent mainland areas of coastal, southern California.; Notes: The description of Bacidia heterochroa above has been adjusted to fit western specimens of this species. Specimens from the eastern U.S. contain atranorin (Ekman 1996a).
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=53126 |
Rounded Global Status Rank: GNR - Not Yet Ranked
License | http://creativecommons.org/licenses/by-nc/3.0/ |
Rights holder/Author | NatureServe |
Source | http://explorer.natureserve.org/servlet/NatureServe?searchName=Bacidia+heterochroa |