Anatomie und Systematik der ÖloeolicheneM. 95 



b. Thallus lobis sinuato-rotundatis vel laciuiatis et piilviuatim agg-regatis. 

 O. Icpfophi/Ua TvcK. Thallus atroviridis tenuis lolws sinuato-rotundatis 



adpressis (Th. sequentium niger vel ca?sio-pruinosus, laciuiis sa^pe 

 puhäuatim aggregatis). Spora^ 8:ua?. 



0. crihellifcra Nyl. »Apotliecia gregarie conferta, extus punctulis im- 

 pressellis uotata». Sporœ 8:dje, oblonga?, ^ /i. ïhecium J vinose 

 rubescit. 



0. piilrùiafa Nyl. Sporœ S:na^ ellipsoidese, 10 — 12 //longa?. Thecium 

 J coerulescit. 



0. Hcppii Müll. Arg. Sporte circa 32:na?, eUipsoidea?, 5 ji longa?. The- 

 cium J fulvo-rubescens. 



c. »Thallus orbicularis, subimbricatus, basi unibilicato-affixus. » 



O. cuhaiiu TucK. »Thallus viridi-olivaceus, lobis squamseformibus ad- 

 pressis, peripliericis latioribus, omnibus crenatis, subtus rugoso-ver- 

 rucosis. » 



B. Thallus umbilicatus, laciniato-divisus laciniis spa.thulatis vel linearibus, ad- 



pressis. 

 0. poli/glossa Tuck. Gonidia tantunimodo in ambitum laciniarum con- 



gesta, stratum medulläre latum. 

 O. liiigidafa Tuck. Gonidia quaterna hinc illinc concatenata, per totum 



fere thallum dispersa, stratum medulläre iudistinctum vel angustis- 



.simum. 

 O. )-((rli((t(i (SoMMERF.) Gonidia imprimis in ambitum congesta, in 



Strato medullari parce occurrentia. 



C. Thallus monophyllus, parvus (vix 3 mm. in lat. superans), umbilicatus, 

 pelfcatus. 



a. Apothecia demum lecanorina, urceolata. 



O. iiimmiiJaria (Dur. & Mont.) Spora? eUipsoidea?, circa 24:n;p. 

 O. üntnnän Nyl. Spor* subglobosa?, ^' /i, 8:na\ 



b. Apothecia fere semper disco vix aperto, facie pyrenodea. 

 rj) Sporse ellipsoidese, utraque apice acutiuscuhv. 



0. niimmnlarioides Nyl. 

 ^5) Sporœ ellipsoidese, apicibus rotundatis. 

 O. lik'dopmra Mass. 

 0. plii/Uisroides Nyl. 



c. Apothecia ignota. 



O. ? ]\'ronensis Mass. 

 0. ramaroiiiofpha Mass. 



