222 33. LECIDEACEAE [ 125. Bilimbia 



E. Spores rarely less than 12 /* in length 



F. Thallus greenish to grayish; apothecia pale 



yellowish to reddish 2. B. caloosensis 



F. Thallus greenish gray to lead-colored; apothecia 



yellowish flesh-colored 3. B.molybditis 



D. Apothecia flesh-colored or red to brown or black 



E. Spores more than 8, 10-16 X 5-6 /* 7. B. gyalizella 



E. Spores 8, more than 18 /* in length 



F. Spores 18-26 X 4.5-5.5 /* 6. B.Naegelii 



F. Spores 33-36 X 3.5-5 /* 13. B.rubricosa 



C. Hypothecium yellowish or reddish brown to darker 



D. Spores 8-16 in an ascus 11. B.acclinis 



D. Spores 8 in an ascus 



E. Spores less than 15 /* in length 



F. Hypothecium brownish 9. B.declinis 



F. Hypothecium blackish brown 17. B.tricholoma 



E. Spores 14-21X3.5-5/* 10. B.trisepta 



B. On old wood, moss, or soil 

 C. Spores 3-septate 



D. On old logs; apothecia coal black 19. B.melaena 



D. On moss ; apothecia pale flesh-colored to reddish 



brown 5. B. sphaeroides 



C. Spores 3-7-septate 



D. Thallus brownish to ashy; spores 18-38 X 4.5-8 /* ... 16. B.lignaria 

 D. Thallus greenish gray to ashy; spores 15-30 X4-7.5 /* . 23. B. sabuletorum 



1. Bilimbia floridana (Tuck.) Riddle, Bull. Torr. Club 43:162. 1916. 

 Biatora floridana Tuck., Syn. N. A. Lich. 2:39. 1888. Bacidia floridana (Tuck.) 



Zahlbr. 



Thallus thin, of subsquamulose, confluent, yellowish green granules; apothecia 

 minute, 0.01-0.35 mm. across, adnate, often clustered, the disk flat to slightly con- 

 vex, sometimes becoming irregular, reddish flesh-colored, the exciple paler, thin, 

 and sometimes disappearing; hypothecium hyaline; spores hyaline, oblong-ellipsoid 

 to finger-shaped, 3-septate, 10-15 X 2.5-4/*. 



On trees, Florida. 



2. Bilimbia caloosensis (Tuck.) Fink n. comb. 



Biatora caloosensis Tuck., Syn. N. A. Lich. 2:41. 1888. Bacidia caloosensis 

 (Tuck.) Zahlbr. 



Thallus thin, minutely granulose, pale greenish to grayish, often forming a 

 granulose crust; apothecia minute to small, 0.2-0.5 mm. across, adnate, often 

 clustered, the disk flat to convex, pale yellowish to reddish, the exciple of same 

 color and disappearing; hypothecium hyaline; spores hyaline, oblong-ellipsoid to 

 finger-shaped, 3-septate, 12-22X2.5-4/*,. 



On trees, Florida. 



3. Bilimbia molybditis (Tuck.) Fink n. comb. 



Biatora molybditis Tuck., Syn. N. A. Lich. 2:34. 1888. Bacidia molybditis 

 (Tuck.) Zahlbr. 



Thallus minutely granulose, greenish gray to lead-colored, forming a thin, 

 chinky crust; apothecia minute to small, 0.2-0.45 mm. across, sessile, often clus- 

 tered, the disk flat to slightly convex, yellowish flesh-colored, the exciple stout, 

 of same color; hypothecium hyaline; spores fusiform, 3-septate, 12-21 X 2.5-4.5/*.. 



On trees, Florida. 



4. Bilimbia cupreorosella (Nyl.) Bausch, Verh. Nat. Vere. Carls. 4:124. 1869. 



Lecidea cupreorosella Nyl., Mem. Soc. Sci. Nat. Cherb. 122. 1857. Biatora 



cupreorosella (Nyl.) Tuck. 

 Thallus granulose, greenish gray to whitish, passing into chinky and verrucose 

 conditions; apothecia minute to small, 0.2-0.5 mm. across, adnate, often irregular, 



