Allographa

Kalb, Jutarat, Lücking, Robert & Kalb, Klaus, 2018, The lichen genera Allographa and Graphis (Ascomycota: Ostropales, Graphidaceae) in Thailand-eleven new species, forty-seven new records and a key to all one hundred and fifteen species so far recorded for the country, Phytotaxa 377 (1), pp. 448-450 : 448-450

Key to lirella-morphs found in Thai Allographa and Graphis species.

1. Lirellae with no carbonized parts, labia entire or (indistinctly) striate, convergent or slightly divergent ........................................... ........................................................................................................................................................ balaghatensis -morph ( Fig. 1A .)

- Lirellae with carbonized proper exciple which is visible from outside or proper exciple carbonized, completely covered by thallus and thus not visible from outside ..................................................................................................................................................... 2.

2. Lirellae lacking thalline margin or with basal thalline margin only ................................................................................................ 3.

- Lirellae with lateral to complete thalline margin ............................................................................................................................. 7.

3. Lirellae striate .......................................................................................................................................................... striatula -morph

- Lirellae entire ................................................................................................................................................................................... 4.

4. Lirellae very short to short and unbranched .................................................................................................................. nuda -morph

- Lirellae short to elongate and stellately or sparsely to irregularly branched ................................................................................... 5.

5. Lirellae stellately branched, labia divergent, disc opened and with a brownish, K+ purple pruina schummiana -morph ( Fig. 1D .)

- Labia convergent, disc concealed .................................................................................................................................................... 6.

6. Lirellae stellately branched .................................................................................................................................... geraensis -morph

- Lirellae sparsely to irregularly branched ..................................................................................................................... hossei- morph

7. Lirellae with lateral thalline margin (upper part of labia black) ....................................................................................................... 8.

- Lirellae with complete thalline margin (upper part of labia dark gray or invisible) ..................................................................... 23.

8. Labia entire ...................................................................................................................................................................................... 9.

- Labia striate ................................................................................................................................................................................... 22.

9. Lirellae immersed to erumpent ...................................................................................................................................................... 10.

- Lirellae prominent to sessile .......................................................................................................................................................... 20.

10. Disc exposed (at least partly) ........................................................................................................................................................ 11.

- Disc concealed ............................................................................................................................................................................... 13.

11. Disc pruinose .............................................................................................................................................................. scripta -morph

- Disc non-pruinose .......................................................................................................................................................................... 12.

12. Lirellae short to elongate ......................................................................................................................................... handelii -morph

- Lirellae very long and slender ........................................................................................................ leptogramma -morph ( Fig. 1C .)

13. Labia pruinose ............................................................................................................................................................................... 14.

- Labia non-pruinose ........................................................................................................................................................................ 16.

14. Thallus ecorticate ............................................................................................................................................... glaucescens -morph

- Thallus corticate ............................................................................................................................................................................ 15.

15. Lirellae very long and radiately branched ................................................................................................... dendrogramma -morph

- Lirellae elongate and sparsely to irregularly branched ............................................................................................ caesiella -morph

16. Thalline margin thick, bulging ....................................................................................................................... subserpentina -morph

- Thalline margin thin, not bulging .................................................................................................................................................. 17.

17. Lirellae long to very long .............................................................................................................................................................. 18.

- Lirellae short to elongate ............................................................................................................................................................... 19.

18. Lirellae usually immersed and irregularly branched ............................................................................. filiformis -morph ( Fig. 1B .)

- Lirellae erumpent and radiately branched ............................................................................................................ centrifuga morph

19. Lirellae short and not or only sparsely branched ....................................................................................................... lineola -morph

- Lirellae elongate and distinctly irregularly branched ............................................................................................ deserpens -morph

20. Labia pruinose, lirellae unbranched to irregularly branched .............................................................................. farinulenta -morph

- Labia non-pruinose ........................................................................................................................................................................ 21.

21. Labia very short and unbranched ................................................................................................................................ dussii -morph

- Labia short to elongate and sparsely to irregularly branched ............................................................................... marginata -morph

22. Labia pruinose, thallus ecorticate ...................................................................................................................... glaucescens -morph

- Labia non-pruinose, thallus corticate ......................................................................................................................... tenella -morph

23. Labia entire, thalline margin apically variable .............................................................................................................................. 24.

- Labia striate, thalline margin apically thin (upper part of proper exciple appearing dark gray) ................................................... 27.

24. Thalline margin apically thin (upper part of proper exciple appearing dark gray) ....................................................................... 25.

- Thalline margin apically thick (proper exciple ± invisible) .......................................................................................................... 26.

25.

-

26.

-

27.

-

Figures

FIGURE 1. A.–D. Newly described lirellae-morphs. A. balaghatensis-morph (Graphis balaghatensis, scale = 0.6 mm; KJK 42040). B. filiformis-morph (Graphis filiformis, scale = 0.5 mm; KJK 41932). C. leptogramma-morph (Graphis leptogramma, scale = 0.5 mm; KJK 41792). D. schummiana-morph (Graphis schummiana, scale = 0.25 mm; KK 39065). E.–F. Lirellae with complete thalline margin; E. Lirellae with apically thick thalline margin (Graphis schroederi, scale = 1 mm; KJK 41749); F. Lirellae with apically thin thalline margin (Allographa acharii, scale = 0.5 mm; KK 19455).