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Species MB515128 Canoparmelia roseoreagens Marcelli, Canêz & Elix 2010   Bibliography: Canêz, L.; Marcelli, M.P.; Elix, J.A., 2009, Mycotaxon 110: 468 (more info, abstract) Year of publication: 2010 Status of the name: basionym; legitimate MycoBank's opinion: currently used Classification: Fungi, Ascomycota, Pezizomycotina, Lecanoromycetes, Lecanoromycetidae, Lecanorales, Parmeliaceae, Canoparmelia Obligate synonym(s): none Morphic status: Teleomorph (anamorph connection(s) unknown or not recorded) Taxonomic synonym(s): Ordered by epithet name none Descriptions: Latin diagnosis (Canêz, L.; Marcelli, M.P.; Elix, J.A. 2009, Mycotaxon 110: 468) Canoparmelia roseoreagens Marcelli, Canêz & Elix, sp. nov. Fig. 1b MycoBank MB 515128 Diagnosis: Similis Canoparmelia sanguinea medulla C+ rosa et praesentia isidiorum sed substantiis medullae differt. Holotype - Brazil, Rio Grande do Sul State, Municipality of Vacaria, Fazenda da Estrela locality, Araucaria angustifolia forest, 28º03'58,8''S, 50º57'34,1''W, 905 m alt., on tree bark, leg. L.S. Canêz & A.A. Spielmann 96, 03-III-2003 (SP, isotype in H). Original description (Canêz, L.; Marcelli, M.P.; Elix, J.A. 2009, Mycotaxon 110: 468) Canoparmelia roseoreagens Marcelli, Canêz & Elix, sp. nov. Fig. 1b MycoBank MB 515128 Thallus grayish, sublaciniate, to 9.0 cm wide. sublaciniae irregularly branched, 0.9-2.5 wide, adnate, contiguous, apices truncate, margin smooth to crenate; upper surface smooth, continuous to slightly cracked in the center of the thallus; maculae weak or absent, reticulate, more evident in the young parts, sometimes forming small cracks. Lacinules, pustules and soredia absent. Isidia concolorous with the thallus, cylindrical, simple to mostly coralloid when mature, 0.10-0.45 x 0.05 mm, erect, firm, laminal, apices eciliate, brown. Medulla white, K+ purple pigment absent. Lower surface black to dark brown, slightly shiny, rugose; marginal zone brown, shiny, 0.5-1.5 mm wide, rugose, rarely papillate; rhizines white, dark brown or rarely black, simple to furcate, 0.25-0.50 x 0.05-0.08 mm, few to frequent, almost evenly distributed. Apothecia and Pycnidia not seen. Spot tests: cortex K+ yellow, UV-; medulla K-, C+ rose, KC+ rose, P+ pale yellow, UV-. TLC/HPLC: Atranorin (±minor), methyl olivetolcarboxylate (major), methyl divarinolcarboxylate (major), eight major unknown depsides (derivatives of norsekikaic acid, norhomosekikaic acid and norhyperhomosekikaic acids or their corresponding methyl esters). Canoparmelia roseoreagens is a maculate, isidiate species with a rugose lower surface and a complex medullary chemistry. This species is probably the isidiate counterpart of the sorediate C. subroseoreagens (see below). Another isidiate species that also has a C+ rose medulla is C. sanguinea, but the latter has a different chemistry, which includes substances of the anziaic, divaricatinic, glomelliferic, and perlatolic acid complexes as well depsidellin B, substances that are absent from C. roseoreagens. Additionally, the isidia of C. roseoreagens are more densely branched (mostly coralloid) than those found in the specimens of C. sanguinea (simple to sparsely branched) from various localities in Brazil (see below). Two other C+ rose isidiate Canoparmelia species contain different medullary substances. C. rarotongensis Louwhoff & Elix (2000) from the Cook Islands has inflated isidia and produces lecanoric acid, orsellinic acid, and orcinol, while C. martinicana (Nyl.) Elix & Hale (from North America and northern South America), has papillate, then cylindrical to thickened, isidia and produces gyrophoric acid, protocetraric acid, and (rarely) norlobaridone (Hale 1976). In the field, C. roseoreagens could be confused with C. caroliniana (Nyl.) Elix & Hale, which is very abundant in Brazil. Canoparmelia caroliniana, which may have similar isidia and maculation, has a paler grayish-white upper surface and different chemistry, producing perlatolic acid (major), stenosporic acid (major), glomelliferic acid (minor), anziaic acid (trace), 4-O-demethylstenosporic acid (trace), divaricatic acid (trace) in the medulla (C-, KC+ faint purple). Date entered: 19/08/2009 01:49:37 Date of release: 15/02/2010 02:47:45 Entered by: Dr. Marcelo Marcelli Instituto de Botânica / Seção de Micologia e Liquenologia, Brazil Illustration #1: Description: Partial new species holotypes b. Canoparmelia roseoreagens. Author(s): Canêz Marcelli & Elix Original in: Canêz, L., Marcelli, M.P. & Elix, J.A. 2009, Mycotaxon 110: 465-472 Type specimen Description: MBSPEC 50032 Herbarium number: SP, isotype in H Collected by: L.S. Canêz & A.A. Spielmann 96, 03-III-2003 (SP, isotype in H) Substrate: tree bark Location: Brazil, Rio Grande do Sul State, Municipality of Vacaria, Fazenda da Estrela locality, Araucaria angustifolia forest, 28º03'58,8''S, 50º57'34,1''W, 905 m alt.