A Lichenological Legacy – Festschrift Thomas H

More documents

Recommendations

Info

The species was previously known from Wright’s material from Cuba, Venezuela (see above), and Samoa [MÜLLER 1896, as Psorella pertexta (Nyl.) Müll. Arg.; not examined by me]. New to Jamaica and Puerto Rico. Specimens examined: CUBA. Buck 23433 (NY), Harris 14514, 14632 (NY), Hioram 12577 (NY, TLC not performed), Imshaug 24853 (MSC), Pérez-Ortega s.n. (hb Pérez-Ortega), Shafer 3359 (NY), Wright s.n. (H-NYL 17344, holotype), Wright, Lich. Cub. 214, 215, 216 (BM, UPS, isotypes of Lecidea microphyllina var. subgranulosa Tuck.). PUERTO RICO. Buck 3516 (NY). JAMAICA. Buck 5697, Cummings 118 (NY), Imshaug 13800, 14202 (MSC). 28. Phyllopsora phaeobyssina (Vain.) Timdal comb. et stat. nov. Lecidea breviuscula var. phaeobyssina Vain., Ann. Acad. Sci. Fenn., ser. A, 6, 7: 127 (1915). – Phyllopsora corallina var. phaeobyssina (Vain.) Brako, Mycotaxon 35: 14 (1989). – Type: GUADELOUPE, Houelmont, sur un Coffea arabica, Duss 481 (TUR-V 22602, holotype) [argopsin (major)]. (Colour Plate 16C) Description: Prothallus well developed, dark brown. Thallus effuse, squamulose, without radiating marginal squamules. Squamules medium sized, up to 0.5(–1) mm wide, adnate, isodiametrical to elongate, more or less scattered, plane to weakly convex, crenulate to deeply divided; upper side medium brown to dark brown, shiny, epruinose, glabrous; margin concolorous with the upper side, glabrous. Isidia common, more or less flattened, long, usually branched, sometimes coralloid. Upper cortex of type (1–)2, 40–60 μm thick, not containing crystals. Medulla containing crystals not dissolving in K, PD+ orange, K–. Apothecia common, up to 0.8(–1.2) mm diam., weakly to moderately convex, medium brown, mostly rounded and simple, with a paler, non-pubescent margin. Excipulum and hypothecium pale brown throughout, K–. Epithecium dark brown, K–. No crystals in apothecium. Ascospores ellipsoid, simple, 5.5–7.5 2.5–3 μm (n = 50). Chemistry: argopsin (major) and norargopsin (absent to minor). Notes: This species was treated as P. corallina var. phaeobyssina by BRAKO (1991), but differs from P. corallina in having darker brown, more shiny squamules with more or less flattened isidia, shorter ascospores, and in containing argopsin and often norargopsin. In P. corallina, the isidia are terete, the ascospores narrowly ellipsoid to shortly bacilliform, 6.5–14.5 2–2.5 μm, and the squamules do not contain lichen substances. Phyllopsora santensis, treated as P. corallina var. santensis (Tuck.) Brako by BRAKO (1991), differs in forming more greenish brown, often pale-edged, less shiny, more isodiametrical squamules with shorter, cylindrical isidia. The upper cortex of P. santensis is thinner (20–30 μm) and the ascospores are longer, 7.5– 10.5 2.5–3 μm. Phyllopsora santensis always contains norargopsin in addition to argopsin, but this compound is often missing in P. phaeobyssina. Phyllopsora parvifoliella has mostly flattened isidia and short ascospores like P. phaeobyssina, but differs in being green to greenish brown and less shiny, 342 eschweizerbart_xxx
having a thinner upper cortex (15–30 μm) of type 1, and in containing atranorin and parvifoliellin. The species is neotropical. New to Dominica, the Dominican Republic, Grenada, Haiti, Jamaica, Saint Lucia, and Trinidad and Tobago. Specimens examined: HAITI. Imshaug & Wetmore 2945-immixture, 3179 (MSC). DOMINICAN REPUBLIC. Imshaug & Wetmore 3732 (MSC). PUERTO RICO. Harris 21987 (NY), 27320 (NY, O). JAMAICA. Cummings 44 (NY), Imshaug 14030, 14647 (MSC). GUADELOUPE. Duss 481 (TUR-V 22602, holotype). DOMINICA. Imshaug & Imshaug 33192 (MSC). SAINT LUCIA. Imshaug & Imshaug 29802, 29857, 30025, 30181 (MSC). SAINT VINCENT & THE GRENADINES. Elliott 261bimmixture (BM, TUR-V 22612). GRENADA. Imshaug 16081, 16265 (MSC). TRINIDAD & TOBAGO. Imshaug & Imshaug 31441, 31452, 31657, 32021-immixture (MSC), Rui & Timdal 10756, 10872, 10876, 10882 (O). 29. Phyllopsora porphyromelaena (Vain.) Zahlbr. Catal. Lich. Univers. 4 (26): 401 (1926). – Lecidea porphyromelaena Vain., Acta Soc. Sci. Fennicae 15: 113 (1920). – Type: THE PHILIPPINES, prov. Bataan, Luzon, Mount Mariveles, XII. 1908, Merrill 6273 (TUR-V 22619, lectotype selected by SWINSCOW & KROG 1981, not seen), 6256 (syntype, BM) [TLC not performed]. – Phyllopsora albicans sensu SWINSCOW & KROG (1981), TIMDAL & KROG (2001), ELIX (2009), non Müll. Arg. – Phyllopsora buettneri var. glauca B. de. Lesd., Revue Bryol. Lichénol. 7: 60 (1934). – Descriptions: TIMDAL & KROG (2001), ELIX (2009), both as P. albicans. Chemistry: chemotype 1 (pantropical): argopsin (major), norargopsin (minor to major) and zeorin (absent to major, always present in the West Indies); chemotype 2 (paleotropical): argopsin (major) and pannarin (major). Notes: The species is recognized by the large, elongated, ascending, epruinose squamules breaking off lacinules at the tips and by containing argopsin and additional compounds. This species was called P. albicans Müll. Arg. by SWINSCOW & KROG (1981), TIMDAL & KROG (2001), and ELIX (2009). BRAKO (1991), however, placed P. albicans in synonymy with P. santensis, and my recent examination of the holotype of P. albicans (Costa Rica, Pitt 5474, G) showed that this is correct. BRAKO (1991) treated P. porphyromelaena as P. buettneri var. glauca (B. de Lesd.) Brako chemical strains I and III. Strain I was characterized by argopsin, norargopsin, vicanicin, norvicanicin, and ± zeorin, and strain III by argopsin and ± zeorin. My re-examination of the West Indian material showed a constant presence of norargopsin but did not confirm the presence of vicanicin or norvicanicin in any specimen of P. porphyromelaena (including the isolectotype of P. parvifolia var. glauca B. de Lesd., Hioram 9098, NY). A distinction between two chemotypes of P. porphyromelaena in the Neotropics is hence not supported here. Probably the report of vicanicin and norvicanicin in this species was based on erroneously identified material of the taxon here called P. buettneri chemotype 3. Brako's chemical strain II is here treated as P. chodatinica, see that species for discussion. For P. melanoglauca, listed by BRAKO (1991) as a synonym of P. buettneri var. glauca, see P. buettneri. 343 eschweizerbart_xxx
Page 1 and 2: CBibliotheca Lichenologica 106, 319
Page 3 and 4: Material and methods Imshaug collec
Page 5 and 6: Table 3. Secondary compounds occurr
Page 7 and 8: Table 3. Secondary compounds occurr
Page 9 and 10: Phyllopsora breviuscula is pantropi
Page 11 and 12: 4. Phyllopsora canoumbrina (Vain.)
Page 13 and 14: 8. Phyllopsora cognata (Nyl.) Timda
Page 15 and 16: ellipsoid ascospores (7-13 2-3 μm
Page 17 and 18: and recrystallizing by forming acic
Page 19 and 20: 19. Phyllopsora leucophyllina (Nyl.
Page 21 and 22: 23. Phyllopsora minor Brako Mycotax
Page 23: seems to differ in forming marginal
Page 27 and 28: Specimens examined: CUBA. Monte Ver
Page 29 and 30: (Colour Plate 16F) Description: Pro
Page 31 and 32: 15 Medulla PD+ yellow (2,7-dichloro
Page 33 and 34: MENLOVE, J.E. (1974): Thin-layer ch
Page 35 and 36: 14 eschweizerbart_xxx
Page 37: 16 eschweizerbart_xxx

A Lichenological Legacy – Festschrift Thomas H

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?