132 



podetio transversim dissecto inter stratum corticale et medulläre observetur goni- 

 micum annulo viridi subsimile. Qua re omnino differt praesens species a Siphula 

 torulosa Nyl., planta mihi ignota, de cujus gonidiis affert cl. Nyländer (Syn. 

 p. 46): "elles sont réunies en groupes dispersés dans la couche médullaire" (c r. 

 ejusd. tab. I f. 2 a); nonne tarnen tanta partium internarum diversitas differen- 

 tiam genericam inter has plantas indicat? Meliorem sane notam haec res offert, 

 quam minutulae et sabttlissimae illae sunt, quibus nituntur genera Chlorea, Ne- 

 phromium, Peltula ceteraque. 



Fam. II. Ramalinei. 



Thallus fruticulosiis, adscendcns I. pendtdus, foliaceo-compressus vel 

 dilatatus, undique corticatus. Apothecia primitus concava. 



6. Ramalina Ach. 



Thallus foliaceo-coniplanatus, subcartilagineus; apothecia scutellaefor- 

 raia, orbicularis, concoloria; hypothecium simplex subgelatinosum strato go- 

 nimico impositum; sporae suboctonae, dyblastae, hyalinae. 



1. R. cal/caris (L.) Fr. : thallo rigido, gelatinoso-cartilagineo, plus 

 minus lacunoso, glauco I. cinereo-virescente; apotheciorum disco planiusculo. 

 margine elevato. 



Syn. Ramalina cal/caris Fr L. E. p. 30, K o erb. Syst. p. 39. 

 Ramalina fraxinea Sch a er. Enum. p. 9, Koerb. Syst. p. 32. 

 Ramalina polymorpha A — D, 3/. Mass. Mem. p. 65 — 66. 

 a. fraxinea (L.): laciiiiis longis latisque, apotheciis lateralibus. 

 Syn. Ramalina fraxinea Ach. Univ. p. 602, Syn. p. 296. 

 Exs. L. Su. n. 71. — Rbnh. n. 24S. 



[b. fastigiata (Pers. 1 !: laciniis fastigiatis, apotheciis terminalibus. 

 Syn. Ramalina fastigiata Ach. Univ. p. 603, Syn. p. 296, Smrft. 

 Suppl. p. 114. 



Exs. L. Su. n. 263. 



7. farinacea (L.): laciniis sublinearibus, sorediis albis conspersis; 

 apotheciis raris terminalibus lateralibusque. 



Syn. Ramalina farinacea Ach. Univ. p. 606, Syn. p. 297, Smrft. 

 Supnl. p. 115, Schaer. Enum. p. 8, Koerb. Syst. p. 40. — Lichen Wnbg. 

 Lapp. p. 436. 



Exs. L. Su. n. 73. — Schaer. n. 494. 



