82. Ramonia] 23. GYALECTACEAE 139 



to brick-red, very small or finally larger, the proper exciple thick, whitish, be- 

 coming radiately striate, the thalloid one evanescent and seldom seen; spores 

 ellipsoid, 3-5-septate transversely and 1-septate longitudinally, 15-19 X 6-9 /a. 

 On rocks, from Vermont to Alabama, and westward to Minnesota. 



2. Gyalecta Flotowii Koerb., Syst. Lich. Germ. 171. pi. 3, f . 9 a, b. 1855. 



Thallus thin, smooth to slightly chinky and scurfy, grayish to whitish, often 

 disappearing; apothecia minute, 0.15-0.3 mm. across, adnate, the disk concave, 

 pale flesh-colored, the proper exciple thick, whitish, becoming crenulate, covered 

 by a thin, evanescent, thalloid one; spores ellipsoid to ovoid-ellipsoid, 3-9-septate 

 transversely and 1-2 -septate longitudinally, 12-15 X 7-9 fi. 



On trees, near Amherst, Massachusetts. 



OTHER SPECIES REPORTED 



Gyalecta radiatilis Tuck. — Massachusetts and Rhode Island. 



81. Secoliga Norm., Nyt Mag. Naturv. 1:230. pi. 1, f. 9 b, 10 c, d; 



pi. 2, f. 24 a, 1853. pr. p. 



Thallus crustose, thin, smooth to chinky, granulose or powdery, sometimes 

 disappearing, partly within the substratum, rudimentary, rarely showing differenti- 

 ation; apothecia minute, slightly immersed to adnate or sessile, the disk deeply 

 concave to flat, flesh-colored to yellowish brown, the exciple thin, colored like the 

 disk or lighter; hypothecium hyaline; hymenium hyaline or brownish above; pa- 

 raphyses unbranched; asci cylindrico-clavate; spores 8, hyaline, oblong to ellipsoid, 

 3- or more-septate, the cells cylindrical. 



The algal host is Trentepohlia. 



A. On trees; apothecia flat, yellowish flesh-colored . . . . .2. S. carneoluteola 

 A. On soil and rocks; apothecia deeply concave, yellowish brown ... 1. S. geoica 



1. Secoliga geoica (Wahl.) Koerb., Par. Lich. Ill, 112. 1865. 



Lichen geoicus Wahl., Vet. Akad. Handl. 142. pi. 4, f. 5. 1806. Gyalecta geoica 

 (Wahl.) Ach. Gyalecta geoica f. trivialis Willey. 



Thallus thin, somewhat powdery, pale greenish gray to yellowish or whitish 

 ashy, often disappearing; apothecia minute, 0.1-0.25 mm. across, immersed to ad- 

 nate, the disk deeply concave, yellowish brown, the proper exciple thin, pale, 

 becoming obscurely radiately striate; spores oblong to ellipsoid, 3 -septate, 12-22 X 

 6-8 ix. 



On soil and rocks, Massachusetts and Illinois. 



2. Secoliga carneoluteola (Tuck.) Mull. Arg.; Engler, Bot. Jahr. 20:277. 1894. 



Gyalecta carneoluteola Tuck., Proc. Am. Acad. 6:271. 1866. 



Thallus very thin, scurfy to ashy gray; apothecia minute, 0.1-0.25 mm. across, 

 adnate, flattened, the disk flat, yellowish flesh-colored, the proper exciple thin, 

 lighter than the disk; spores 6-8, fusiform-ellipsoid, 3- or rarely 1-septate, 10-15 

 X 4-5.5 fi. 



On trees, Florida. The material is doubtfully referred to this species. 



82. Ramonia Stizenb., Ber. St. Gall. Nat. Gesell. 168. 1862. 



Thallus crustose, granulose, rudimentary, showing little or no differentiation 

 into layers, attached to the substratum by hyphal rhizoids; apothecia minute to 

 small, immersed to adnate or sessile, the disk concave to flat, the exciple colored 

 like the disk or whitish pruinose, striate, rather thick, surrounded by a thin thalloid 

 one; hypothecium hyaline; hymenium hyaline or brownish above; paraphyses 

 unbranched, spongy; asci clavate; spores 12-many, hyaline, ellipsoid or boat- 

 shaped, 1-septate. 



The algal host is Trentepohlia. 



