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Corresponding author: Ze-Feng Jia ( zfjia2008@163.com ) Academic editor: Cecile Gueidan
© 2017 Ze-Feng Jia, Robert Lücking.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Jia Z-F, Lücking R (2017) Resolving the genus Phaeographina Müll. Arg. in China. MycoKeys 21: 13-32. https://doi.org/10.3897/mycokeys.21.11986
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As part of ongoing studies of the lichen family Graphidaceae in China, the status of all taxa traditionally assigned to the genus Phaeographina reported from China is resolved in the present paper. Five new combinations are proposed: Phaeographis pleiospora (Zahlbr.) Z.F. Jia & Lücking, comb. nov., Platygramme elaeoplaca (Zahlbr.) Z.F. Jia & Lücking, comb. nov., Platythecium maximum (Groenh.) Z.F. Jia & Lücking, comb. nov., P. pyrrhochroa (Mont. & Bosch) Z.F. Jia & Lücking, comb. nov., and Sarcographina heterospora (Nyl.) Z.F. Jia & Lücking, comb. nov. Six new synonyms are established: Phaeographina callospora Zahlbr. [= Diorygma hieroglyphicum (Pers.) Staiger & Kalb], P. fukiensis Zahlbr. [= Pallidogramme chrysenteron (Mont.) Staiger, Kalb & Lücking], P. fukiensis var. substriata Zahlbr. [= Pallidogramme chrysenteron (Mont.) Staiger, Kalb & Lücking], P. granulans Zahlbr. [= Platygramme platyloma (Müll. Arg.) M. Nakan. & Kashiw.], P. pluvisilvarum Zahlbr. [= Graphis alpestris (Zahlbr.) Staiger], and P. valida Zahlbr. [= Thecographa prosiliens (Mont. & Bosch) A. Massal.]. Two additional synonyms are reported: Phaeographina subrigida (Nyl.) Zahlbr. is synonymized under Platygramme platyloma (Müll. Arg.) M. Nakan. & Kashiw., and Platythecium dimorphodes (Nyl.) Staiger under Platythecium pyrrhochroum (Mont. & Bosch) Z.F. Jia & Lücking.
Lichen, taxonomy, Graphidaceae , Ostropales
The lichen genus Phaeographina Müll. Arg. is an artificial, ascospore-based genus in Graphidaceae Dumort. (
As part of a revision of Chinese Graphidaceae, we attempted to resolve the status of all species reported under the name Phaeographina from China (
Type specimens and other material investigated for this study are deposited in
Annotated checklist of Chinese species previously reported under the name Phaeographina Müll. Arg.
1.Phaeographina callospora Zahlbr.
Figure
Feddes Repert. 31: 220, 1933. Type: Taiwan, Faurie 118 (W, holotype!).
= Diorygma hieroglyphicum (Pers.) Staiger & Kalb, in Kalb et al., Symb. Bot. Upsal. 34(1): 151, 2004.
Based on the Diorygma-like thallus and ascomata, this taxon belongs in Diorygma. It has a clear hymenium, single-spored asci, hyaline, muriform ascospores 90–100 × 29–32 µm (
2. Phaeographina chlorocarpoides (N yl.) Zahlbr.
Cat. Lich. Univers. 2: 435, 1923; Hemithecium chlorocarpoides (Nyl.) Staiger, Biblthca. Lichenol. 85: 283, 2002.
≡ Pallidogramme chlorocarpoides (Nyl.) Staiger, Kalb & Lücking in Lücking et al., Fieldiana, Bot. 38: 9, 2008.
Following
3 . Phaeographina chrysenteron (Mont.) M üll. Arg.
Hedwigia 30: 52, 1891 [as ‘chrysentera’].
≡ Pallidogramme chrysenteron (Mont.) Staiger, Kalb & Lücking in Lücking et al., Fieldiana, Bot. 38: 9, 2008; Hemithecium chrysenteron (Mont.) Trevis., Spighe Paglie: 13, 1853.
Following
Pallidogramme is listed as invalid name in Index Fungorum (accessed 18 January 2017), presumably based on ICN Art. 41.5 (incomplete citation of the replaced synonym). However, the replaced synonym is not Hemithecium subgen. Leucogramma Staiger (
4. Phaeographina elaeoplaca Zahlbr.
Figure
Ann. Mycol. 30: 431, 1932. Type: Fujian: Chung 596 d (W, lectotype!, annotation label by Nakanishi in 1973).
≡ Platygramme elaeoplaca (Zahlbr.) Z.F. Jia & Lücking, comb. nov. (see below).
This material is characterized by lirellae with thick, apically carbonized, exposed labia and a closed disc, an inspersed hymenium, single-spored asci producing brown ascospores about 80–110 × 20–30 µm, and the absence of secondary substances. Ascoma morphology and the brown ascospores place this material in the genus Platygramme. Several species have been described which belong in Platygramme and agree with Phaeographina elaeoplaca in ascoma morphology (thick labia with closed disc, single-spored asci, absence of secondary substances: Graphis commutabilis Kremp. (
Platygramme elaeocarpa is a corticolous species reported from Fujian (type locality;
5. Phaeographina fukiensis Zahlbr.
Figure
in Handel-Mazzetti, Symb. Sin. 3: 62, 1930. Type: Fujian, Chung 399a (W, holotype!).
= Pallidogramme chrysenteron (Mont.) Staiger, Kalb & Lücking, in Lücking et al., Fieldiana, Bot. 38: 9, 2008.
Due to the characteristics of thallus and ascomata, this taxon belongs in Pallidogramme. According to the annotation label by Nakanishi, it is similar to Pallidogramme chlorocarpoides (Nyl.) Staiger, Kalb & Lücking, but differs by having smaller ascospores (36–48 × 12–16 µm,
Phaeographin a fukiensis var. substriata Zahlbr.
Ann. Mycol. 30: 432, 1932. Type: Fujian: Chung 597 (W, holotype!).
= Pallidogramme chrysenteron (Mont.) Staiger, Kalb & Lücking, in Lücking et al., Fieldiana, Bot. 38: 9, 2008.
According to Zahlbruckner, this taxon differs from the nominal variety by its striate labia and smaller ascospores, which is odd considering that the type of the nominal variety has distinctly striate labia. The ascospores fall within the lower range of variation of Pallidogramme chrysenteron and hence this is considered another synonym of that species.
6. Phaeographina glyphiza (Nyl.) Zahlbr
Figure
in Handel-Mazzetti, Symb. Sinic. 3: 62, 1930.
≡ Sarcographa glyphiza (Nyl.) Kr.R. Singh & G.P. Sinha, Indian Lichens, An Annotated Checklist (Kolkata): 404, 2010; Graphis glyphiza Nyl., Ann. Sci. Nat., Bot., sér. 4, 19: 374, 1863; Phaeographis glyphiza (Nyl.) Zahlbr., Cat. Lich. Univers. 2: 373, 1923. Type: China, Hong Kong, Nylander 6989 (H, lectotype!).
Following
7. Phaeographina granulans Zahlbr.
Figure
Ann. Mycol. 30: 432, 1932. Type: Fujian, Chung 404 (W, holotype!)
= Platygramme platyloma (Müll. Arg.) M. Nakan. & Kashiw., in Nakanishi, Kashiwadani & Moon, Bull. Natn. Sci. Mus., Tokyo, B 29(2): 89, 2003.
Based on the characteristics of the ascomata, excipulum and ascospores, which are about 140–160 µm long, this taxon is a further synonym of Platygramme platyloma (Müll. Arg.) M. Nakan. & Kashiw. (see discussion under Pl. elaeocarpa above), as already annotated by Nakanishi on the holotype. Platygramme platyloma is a corticolous species reported from Fujian (Type locality of Phaeographina granulans,
8. Phaeographina heterospora (Nyl.) Zahlbr.
Cat. Lich. Univers. 2: 439, 1923; Gymnographa heterospora (Nyl.) Staiger. Biblthca Lichenol. 85: 271, 2002. Type: Reunion, Lepervanche-Mézières 43 (H-NYL 7815, holotype!).
≡ Sarcographina heterospora (Nyl.) Z.F. Jia & Lücking, comb. nov. (see below)
9. Phaeographina lecanographa var. pleiospora Zahlbr.
Figure
in Handel-Mazzetti, Symb. Sin. 3: 61, 1930. Type: China. Fujian, Chung 596b (W, holotype!).
≡ Phaeographis pleiospora (Zahlbr.) Z.F. Jia & Lücking, comb. nov. (see below).
This material belongs in a difficult group of taxa characterized by rounded to shortly elongate, erumpent to prominent ascomata with a usually fissured, thalline margin partially exposing the (dark) brown disc, and with muriform ascospores.
10. Phaeographina macrospora (Zahlbr.) Nakanishi
J. Sci. Hiroshima Univ., Ser. B, div. 2, 11: 101, 1966; Phaeographina montagnei f. macrospora Zahlbr., in Fedde, Repertorium 31: 219, 1933. Type: China. Taiwan, Asahina 372 (TNS, holotype).
= Thecaria montagnei (Bosch) Staiger, Biblthca Lichenol. 85: 446, 2002.
Following
11. Phaeographina maxima Groenh.
in Blumea, Suppl. 5 (H. J. Lam Jubilee Vol.). 107, 1958. Type: Indonesia, Sumatra, Groenhart 9453 (BO, holotype, not seen, but original image in protologue seen).
≡ Platythecium maximum (Groenh.) Z.F. Jia & Lücking, comb. nov. (see below).
According to the original description and excellent illustrations, this is a species of Platythecium, agreeing with P. serpentinellum (Nyl.) Staiger in the brown ascospores and with P. allosporellum (Nyl.) Staiger in the carbonized hypothecium.
12. Phaeographina micromma Zahlbr.
Figure
Feddes Repert. 31: 219, 1933. Type: China. Taiwan, Asahina 376 (W, holotype!).
≡ Fissurina micromma (Zahlbr.) Aptroot, Symb. Bot. Upsal. 34 (1): 34, 2004.
Following
13. Phaeographina mirabilis Zahlbr.
Figure
in Handel-Mazzetti, Symb. Sinic. 3: 62, 1930. Type: China. Fujian, Chung 387 (W, holotype!).
≡ Chapsa mirabilis (Zahlbr.) Lücking, in Rivas Plata, Lücking, Sipman, Mangold, Kalb & Lumbsch, Lichenologist 42(2): 183, 2010.
Following Rivas Plata et al. (2010), this taxon is currently accepted in Chapsa, as C. mirabilis (Zahlbr.) Lücking. It is a corticolous species reported from Fujian (Type locality,
14. Phaeographina montagnei (Bosch) Müll. Arg.
Flora 65: 399, 1882.
≡ Thecaria montagnei (Bosch) Staiger, Biblthca Lichenol. 85: 446, 2002.
Following
15. Phaeographina obfirmata (Nyl.) Zahlbr.
Figure
Cat. Lich. Univers. 2: 441, 1923; Lecanactis obfirmata Nyl., J. Linn. Soc., Bot. 20: 65, 1883. Type: China, Shanghai, Maingay 1861 (H-NYL 7997, holotype!).
= Glyphis scyphulifera (Ach.) Staiger, Biblthca Lichenol. 85: 175, 2002.
Following
16. Phaeographina pluvisilvarum Zahlbr.
Figure
in Handel-Mazzetti, Symb. Sinic. 3: 60, 1930. Type: Chian. Yunnan, Handel-Mazzetti 9261 (W, holotype!).
= Graphis alpestris (Zahlbr.) Staiger, Biblthca Lichenol. 85: 205, 2002.
This taxon was suggested to represent a synonym of Graphis alpestris by Nakanishi on an annotation label.
17. Phaeographina prosiliens (Mont. & Bosch) Müll. Arg.
Flora 65: 398, 1882.
≡ Thecographa prosiliens (Mont. & Bosch) A. Massal., Atti Inst. Veneto Sci. Lett., ed Arti, Sér. 3, 5: 316, 1860.
Following
18. Phae ographina pyrr hochroa (Mont. et Bosch) Zahlbr.
Figure
Cat. Lich. Univers. 8: 218, 1928; Ustalia pyrrhochroa Mont. et Bosch, in Montagne, Syll. Gen. sp. Crypt. (Paris): 352, 1856. Type: Indonesia, Java, Junghuhns.n. (
≡ Platythecium pyrrhochroum (Mont. & Bosch) Z.F. Jia & Lücking, comb. nov. (= Platythecium dimorphodes (Nyl.) Staiger).
According to the lectotype in
19. Pha eogra phina quassiicola (Fée) Müll. Arg.
Mém. Soc. Phys. Hist. Nat. Genève 29(8): 47, 1887[as ‘quassiaecola’].
≡ Thecaria quassiicola Fée, Essai Crypt. Exot. (Paris): xcii, tab. 1, fig. 16 (1825) [1824][as ‘quassiaecola’].
20. Phaeographina scalpturata (Ach.) Müll. Arg.
Flora 65 (25): 399, 1882.
≡ Phaeographis scalpturata (Ach.) Staiger, Biblthca Lichenol. 85: 345, 2002.
Following
21. Phaeographin a va l ida Zahlbr.
Figure
Feddes Repert. 31: 217, 1933. Type: China. Taiwan, Asahina 355 (W, lectotype!).
= Thecographa prosliens (Mont. & Bosch) A. Massal., Atti Inst. Veneto Sci. lett., ed Arti, Sér. 3, 5: 316, 1860.
Based on the characteristics of the lirellae, excipulum and ascospores, this taxon belongs in Thecographa. It has muriform ascospores, 140–160 × 20–28 µm in size, hence we treat it as a synonym of Thecographa prosiliens (Mont. & Bosch) A. Massal. The distribution of this species is referred above.
Bas.: Phaeographina lecanographa var. pleiospora Zahlbr., in Handel-Mazzetti, Symb. Sin. 3: 61, 1930. Type: China. Fujian, Chung 596b (W, holotype!).
Thallus corticolous, crustose, surface pale grey to yellowish-grey, smooth to slightly rough; apothecia rounded to shortly elongate, erumpent to prominent, usually fissured, single, rarely branched, 1–3 mm long and 0.5–2 mm wide; thalline margin partially exposing the (dark) brown disc; labia inconspicuous; discs opened, brown; proper exciple laterally carbonized; hymenium inspersed; 2-4 ascospores per ascus, brown, ellipsoid to subovate, muriform, 60–80 × 20–30 µm, I–.
Norstictic acid.
This species is distinguished from Phaeographis lecanographa by the smaller ascospores (60–80 × 20–30 µm vs. 85–150 × 25–50 µm).
Bas.: Phaeographina elaeoplaca Zahlbr., Ann. Mycol. 30: 431, 1932. Type: Fujian: Chung 596 d (W, lectotype!, fide Nakanish on annotation label 1973).
Thallus corticolous, crustose, surface yellowish-grey, somewhat greenish, waxy, flat to slightly rough; apothecia lirelliform, sessile, black, elongate, single, not branched, 1–5 mm long and 0.2–0.4 mm wide; labia entire, exposed; discs closed, or slightly opened; proper exciple apically carbonized, thick; hymenium inspersed; 1 ascospore per ascus, brown, elongate-ellipsoid, densely muriform, 80–110 × 20–30 µm, I+ red-brown.
No lichen compounds detected.
This species is similar to Platygramme commutabilis, but the latter differs in having ascomata covered with a whitish thallus layer. Platygramme platyloma has a distinct, lateral thalline margin covering the ascomata, as well as larger ascospores (see above).
Bas.: Phaeographina maxima Groenh., in Blumea, Suppl. 5 (H. J. Lam Jubilee Vol.). 107, 1958. Type: Indonesia, Sumatra, Groenhart 9453 (BO, holotype, not seen, but original image in protologue seen).
Thallus saxicolous, crustose, surface grey, smooth; apothecia lirelline, elongate, subimmersed, single and branched, 1–20 mm long and 0.2–0.3 mm wide, with lateral thalline margin; labia conspicuous; discs open, dark; proper exciple completely carbonized; hymenium clear; 8 ascospores per ascus, brown, ellipsoid, muriform, 4/1–2-locular, 14–16 × 8–9 µm, I–.
Not tested.
This species is similar to Platythecium serpentinellum (Nyl.) Staiger in the brown ascospores and to P. allosporellum (Nyl.) Staiger in the carbonized hypothecium. The type material is different from any known species in the genus, it is here recombined as a separate species.
Bas.: Phaeographina pyrrhochroa (Mont. et Bosch) Zahlbr., Cat. Lich. Univers. 8: 218, 1928; Ustalia pyrrhochroa Mont. et Bosch, in Montagne, Syll. Gen. sp. Crypt. (Paris): 352, 1856. Type: Indonesia, Java, Junghuhns.n. (PC, holotype!). = Platythecium dimorphodes (Nyl.) Staiger, Biblthca Lichenol. 85: 383, 2002; Graphis dimorphodes Nyl., Trans. Linn. Soc. London 27: 176, 1869. Type: Sri Lanka, Thwaites C. 23 (H-NYL 7812, holotype!).
Thallus corticolous, crustose, surface whitish to yellowish, smooth to minutely roughened; apothecia lirelliform, sessile, elongate, single to branched, 1–5 mm long and 0.3–0.4 mm wide; labia inconspicuously striate, thalline margin whitish, concolorous with the thallus; discs closed, or slit-like; proper exciple uncarbonized, pale-brownish; hymenium clear; 2–4 ascospores per ascus, brownish, oblong, densely muriform, 28–60 × 10–17 µm.
Norstictic acid.
As stated above, this name is synonymous with Platythecium dimorphodes (Nyl.) Staiger and unfortunately provides an earlier epithet for it.
Bas.: Graphis heterospora Nyl., Ann. Sci. Nat. Bot. sér. 4, 11: 261, 1859; Phaeographina heterospora (Nyl.) Zahlbr., Cat. Lich. Univers. 2: 439, 1923; Gymnographa heterospora (Nyl.) Staiger. Biblthca Lichenol. 85: 271, 2002. Type: Reunion, Lepervanche-Mézières 43 (H-NYL 7815, holotype!).
Thallus corticolous, crustose, surface yellowish to pale grey, flat to slightly rough; apothecia lirelline, immersed in stromata; stromata white, irregularly circular, 0.1–1 mm wide; lirellae thin, black, immersed, in irregular, stellate cluster, 0.05–1 mm wide; discs black, closed; proper exciple uncarbonized, pale yellow brown; hymenium clear; 8 ascospores per ascus, brown, rounded ellipsoid, irregularly 4/1, 2/2 or 3/1 –2 locular, 10–13 × 6–8 µm, I+ red-brown.
Psoromic acid and conpsoromic acid.
This species is very similar to Sarcographina cyclospora Müll. Arg., but the latter differs in having a brownish to apically carbonized excipulum.
This study was supported by the National Natural Science Foundation of China (31270066, 31093440, 31493010 & 31493011) and a fund of Shandong Provincial Education Association for International Exchanges. The curators of the cited herbaria are warmly thanked for providing access to type material or placing type material at our disposal. The first author thanks the Botanical Garden and Botanical Museum (BGBM), Free University Berlin, for hospitality.