Dr. E. Stizenberger's Analytical Key to the Lecideae. 123 



Steaohelia comjjlanata. 



Stylaster complanatus, Pourtales, Bulletin Mus. Comp. Zool. Cambridg-e, 

 U. S. p. llo (1867). 



This species very closely approaclies the preceding, and, 

 exce})t for its minute size, is scarcely distinguishable from it. 

 Such was the opinion entertained on reading Pourtales's de- 

 scription ; and a recent opportunity afforded me by Dr. Duncan, 

 of consulting his type specimens, only confirmed me in the 

 conclusion I had then arrived at. 



XV. — Notul(e Lichenologicce. No. XXXII. 

 By the Rev. W. A. Leighton, B.A., F.L.S., &c. 



The following Analytical Key is extracted from Dr. Ernst 

 Stizenberger's " Monograph of Lecidea sabuletorum^ Florke, 

 and the Lichens allied to it," in ' Acta Acad. Nat. Curios.' 

 vol. xxxiv., and will be found serviceable to the student of 

 that series of Lecideoi with fusiform spores. 



-, I Spores 6-mauy-celled 2, 



• I Spores (2-)4-celled 27. 



ty ) Apotliecia in section pale 3. 



^' \ Apotliecia in section dark 20. 



o j Apotliecia without margin 4. 



' \ Apotliecia with persistent or evanescent margin 12. 



( Colour of apotliecia constantly pale or varying from pale reddish 



4. \ to darlv brown 5, 



( Colour of apothecia constantly brown to black 9. 



f. \ Apothecia 0-3 millim. in diameter 6. 



' j Apothecia 0-5 millim. in diameter 7. 



iThallus leprose, pale; fruit grey to black. L. cinerea^ Schfer. 

 (Exs., Hepp, 21). 

 Thallus powdery, sap-gr.^en ; fruit yellowish. L. cmereuj f. 

 hypoleuca, Stizb. 

 I Spores 4 iiiik.* broad. L. ciipreo-rosella, Nyl. (Mass. 211, a, u; 

 7. \ Hepp, 512; Zw. 269, a; Arn. 265). 



I Spores 8 mik. broad 8. 



Q j Paraphyses compacted. L. sahuhiornrn, f. Killiasii, Hepp. 

 ■ j Paraphyses free. L. sabuJdorum, f. subsphccroides, Nyl. 



Q I Apothecia 03 millim. in diameter , 10. 



I Apothecia 0'4-06 millim. in diameter 11, 



I Spores 40 niik. long. L. chlorococca, Graewe (Stenh. 170). 



• ( Spores 26 mik. long. L. chlorococca, v. brachi/spn-ma, Stizb. 



rHypothecium pale. L. sahuletorunt, v. niilurria, Fr. (Zw. 121; 

 Leight. 210; Anzi, Langob. 148; Mudd, 156, 158 ; Rabh. 322, 

 11.^ 603). 



Hypothecium brownish. Z. siihuletoriim, v. miliaria, f. scolicio- 

 sporioiiles, Bagl. 



[* The " mik." probably = ^rvhro of an inch.] 



9* 



