128. Lopadium] 33. LECIDEACEAE 235 



2. Lopadium domingense (Pers.) Fink n. comb. 



Patellaria domingense Pers., Act. Soc. Wett. 2:12. 1810. Heterothecium domin- 

 gense (Pers.) Flot. 



Thallus of flattened granules, running into a thin, smooth, greenish gray to 

 yellowish or orange crust, becoming uneven, and finally thickened and wrinkled- 

 warty; apothecia middle-sized to large, 0.7-1.5 mm. across, sessile, the disk flat 

 to slightly convex, sanguineous and blackening, the exciple swollen, becoming flex- 

 uous to deep-wavy, orange-yellow; hypothecium dusky reddish; spores 2-8, ellip- 

 soid, 5-9-septate transversely and 1-septate longitudinally, 20-45 X 6-18 /x. 



On trees, South Carolina, Alabama, Florida, Louisiana, and Texas. 



3. Lopadium vulpinum (Tuck.) Zahlbr., Cat. Lich. Univ. 4:316. 1926. 

 Lecidea vulpina Tuck., Proc. Am. Acad. 6:281,282. 1864. Heterothecium vul- 

 pinum Tuck. 



Thallus of flattened granules, running into a thin, smooth crust, becoming 

 uneven, and finally thickened and wrinkled-warty, greenish gray to bright yellow 

 or orange; apothecia middle-sized to large, 0.7-1.5 mm. across, sessile, the disk 

 flat to slightly convex, reddish and darkening, the exciple swollen, becoming flex- 

 uous to deep wavy, orange, finally red; hypothecium dusky reddish; spores 1-4, 

 subspherical to oblong-ellipsoid, 5-9-septate transversely and 1-3-septate longi- 

 tudinally, 25-50 X 14-20 ft. 



On trees, South Carolina and Florida. 



4. Lopadium pezizoideum (Ach.) Koerb., Syst. Lich. 211. 1855. 



Lecidea pezizoidea Ach., Lich. Ann. 182. 1810. Heterothecium pezizoideum 

 (Ach.) Stiz. 



Thallus of scattered, usually flattened squamules or granules, sometimes warty 

 or coralloid, greenish to dusky and blackening; apothecia small to large, 0.5-1.5 

 mm. across, sessile, the disk concave to flat, black, the exciple thick, brownish 

 to black; hypothecium dusky; spores 1, oblong-ellipsoid, 13-23-septate transversely 

 and 3-5-septate longitudinally, 44-100 X 18-40 /a. 



On trees, Massachusetts, Florida, and Washington. 



5. Lopadium leucoxanthum (Spreng.) Zahlbr., in E. & P., Nat. Pfl. 1 1 :137. 



1907. 



Lecidea leucoxanthum Spreng., Nat. Akad. Handl. 46. 1826. Heterothecium 

 leucoxanthum (Spreng.) Mass. 



Thallus smooth, becoming chinky, granulose, or wrinkled-warty, greenish or 

 yellowish to whitish; apothecia middle-sized to large, 0.8-1.8 mm. across, sessile, 

 the disk flat to slightly convex, yellow or rust-colored to dark green, the exciple 

 swollen, flexuous to deeply sinuate, orange-yellow to rust-colored or reddish brown; 

 hypothecium reddish brown; spores 1, oblong-ellipsoid, 19-2 1-septate transversely 

 and 5-9-septate longitudinally, 45-90 X 28-40 fi. 



On trees, Maine, North Carolina, South Carolina, Florida, Alabama, Mississippi, 

 Louisiana, Texas, and Ohio. 



6. Lopadium fuscoluteum (Dicks.) Mudd, Man. Brit. Lich. 190. pi. 3, f. 73. 



1861. 



Lichen fuscoluteus Dicks., PI. Crypt. Brit. 2:18. pi. 6, f. 2. 1790. Biatora fusco- 

 lutea (Dicks.) E. Fries. Heterothecium fuscoluteum (Dicks.) Tuck. 



Thallus thin, minutely granulose to warty, ashy white to light greenish gray; 

 apothecia middle-sized, 0.4-0.9 mm. across, sessile, the disk concave to flat, reddish 

 yellow to dirty orange, sometimes grayish pruinose, the exciple thick, prominent, 

 bright orange, becoming inflexed; hypothecium hyaline to brownish; spores 1, 

 hyaline or tinged brownish, oblong-ellipsoid, 23-35-septate transversely and 7—15- 

 septate longitudinally, 50-110 X 22-56 /x. 



On moss?s and rocks, Washington. 



