Platygramme taiwanensis (J.C. Wei) Z.F. Jia & Luecking, Jia, Ze-Feng & Luecking, Robert, 2017

Jia, Ze-Feng & Luecking, Robert, 2017, Resolving the species of the lichen genus Graphina Muell. Arg. in China, with some new combinations, MycoKeys 25, pp. 13-29: 26-27

publication ID

http://dx.doi.org/10.3897/mycokeys.25.13154

persistent identifier

http://treatment.plazi.org/id/545DD27D-32FC-3DF1-0E1C-3FF98DF690DF

treatment provided by

MycoKeys by Pensoft

scientific name

Platygramme taiwanensis (J.C. Wei) Z.F. Jia & Luecking
status

comb. nov.

5. Platygramme taiwanensis (J.C. Wei) Z.F. Jia & Luecking   comb. nov.

Graphina taiwanensis   Bas.: J.C. Wei, An Enumeration of Lichens in China (Beijing): 99, 1991; nom. nov. pro Graphina olivascens   Zahlbr., in Feddes Repert. Spec. Nov. Regni Veg. 31: 215, 1933; nom. illeg. ICBN Art. 53 [non Zahlbr. 1930]; Type: China (Taiwan), Asahina 346 (holotype W!)

Graphina taiwanensis f. obscurata   = (Zahlbr.) J.C. Wei, An Enumeration of Lichens in China (Beijing): 99, 1991; Graphina olivascens f. obscurata   Zahlbr., in Feddes Repert. Spec. Nov. Regni Veg. 31: 215, 1933 (legitimate acc. to ICN Art. 55.2). Type: China (Taiwan), Asahina 375 (holotype W!)

Description.

Thallus corticolous, crustose, thin, surface cervine to slightly olive, smooth; apothecia lirelliform, elongate, strong, adpressed, single and short branched, 1.5-3 mm long and 0.2-0.3 mm wide; labia entire, distinctly; discs closed or very narrow, epruinose; proper margin obvious, concolorous with the thallus; proper exciple laterally carbonized; hymenium clear, 130-150 µm high. I–; asci long clavate, 1-spored; ascospores, hyaline to grayish, subcylindrical to oblong, ends obtuse, muriform with dense locules, I+ red-brown, 80-105 × 15-18 µm.

Chemistry.

Stictic acid.

Notes.

The material of Graphina taiwanensis and f. obscurata   in W shows the characteristics of Platygramme   such as the distinctly labiate lirellae, closed discs, a laterally carbonized exciple and hyaline to grayish ascospores. Platygramme taiwanensis   is most similar to P. platyloma   , but the latter differs in having an inspersed hymenum, larger ascospores (more than 120 µm long) and lack of lichen substances. Platygramme pudica   (Mont. & Bosch) M. Nakan. & Kashiw. differs in having an inspersed hymenum, larger ascospores (150-180 × 18-25 µm) and echinocarpic acid ( Jia and Kalb 2013). The form obscurata only differs from the nominal taxonby the darker thallus, which is largely caused by the bark, and hence we include it in P. taiwanensis   . The species was only reported from the type location in Taiwan ( Zahlbruckner 1933; Lamb 1963; Wang and Lai 1973, Wei 1991).