— 4i — 
— Mesinae — 
Chondroid axis 1-3 diameter of the thalline filament 
Apothecial margin densely ciliate; cilia pinnate 
Thallus prostrate, articulate, fibrils 
stipate 11. cladocarpa 
Apothecial margin sparsely ciliate; cilia simple 
Cortex smooth 
Espinulose; cilia articulate 5. arthrocladon 
Spinulose; cilia articulate 53. var. spinulosa 
Cortex asperate 
Thallus erect 
Articulate, smooth .45. poliothrix 
Nonarticulate, cartilaginous 
Branches evolute 
Cinereus 
Smooth 37. var. leicodada 
Verrucose or papillate 
Esorediate 
Strigose; fibrils stipate. . . .21. st . f err uginascens 
Estrigose 
Dicroic 49. st. rubescens 
Non-dicroic 14. coralloides ( =florida ) 
Sorediate 61. st. subrubiginea 
Branches adventive (saxicolous) 
Cortex smooth 
Branches intricate 
KHO — 32. var. implexa 
KHO+ 25. var. glacialis 
Branches not intricate 35. laevigata 
Cortex verrucose 6. aspera ( = 41. miliaria ) 
Thallus pendulous 
Primary branches 1-2 mm. diameter 
Thallus subarticulate, mostly smooth 
Spinulose 24. st. fusco-rufa 
Espinulose 
Asperate 50. var. scabra 
Sorediate 51. f. sorediata ( = 52. var. sorediosa ) 
Thallus nonarticulate, papillate 
KHO + . . .48. var. reagens 
Primary branches o. 3-0.6 mm. in diameter 
Smooth. . .20. f. firma 
Cavernose 46. pundulata 
Uncertain species: 35. U. laevigata Pers. ; 8. bogotensis; 15. fiorida f. 
dasycera; 22. flexuosa; 26. barbata f. glaucescens; 43 
barbata var. oxygona. 
