1 7 42 CRYPTOGAMIA. ALGAE. 1937. kepwhfe 



hiithus? Thin, mealy, faffron-red, becoming greyifh. Ft- Dan.Stf; 



2. odoratui. Cruft and fructification carmine. Wgg> 



C. In fijQcular rigid maffes-. frond crujiaceous. Spiloma. 



*mehnopa. Thin, effufe, black im: maffes of the fructification flat, 

 broader, deformed, fomewhat confluent, deep black, 

 A char, tab i.f. 3. 



microclona. Very thin, hoary : maffes minute, fcattered apd fome- 

 what confluent and branched, black. Achar.Juppl. 



fillax, Greyifh, very thin: maffes deformed, minute, flat, fcattered, 

 black i Hi -brown. Perfoon r . 



Vitiligo. Whitifh, very thin, membranaceous: maffes roundifh, a 

 little convex, variegated grey and black, Ach.t.i.f.^. 



tumidula f Leprous, fmooth, cracked, whitifh : maffes minute, 

 crowded, oblong-deformed, tumid, rufous- brown. Ach. t. I. f. <j. 



D, In difiinSi or clujiered white globular mealy fyots, generally mar-r 

 gined. frond crujiaceous. Variolaria 



*faginea, Cruft leprous, thrn, glabrous, rugged, cracked, greyifh- 

 white : tubercles hemispherical, fcattered, pure white. 



Hoff. tab 2-f. 4. 

 orbiculata. Leprous, thin, granular, orbicular, bordered, greytfh- 



white: tubercles central, minute, fhttifh, margined, of the lame 



colour. Hoffm. tab q.f. 2. 

 2. Blackifh: tubercles pure white. 

 afpergilia Tartareous, thin, rather folid, determined, with a fmooth 



circumference, thinly cracked, grey: tubercles fcattered, rather 



obfeure, fu per ficia I, whiter. Achar. 

 2. Effufe, greyifh -white, flightly cracked, fmooth ifh: tubercles appreffed, 



fomewhat margined, round-deformed, rather confluent, of the fame co- 

 lour. Westrivg. 

 sreina. Tartareou c , fomewhat determined, whitifh, broken into 



patches, mealy, with a fmooth cracked border: tubercles clufter- 



ed, irregular, pure white JVeftring. 

 laclea. Tartareous, determined, with a warty area, fmooth, white, 



with a fomewhat radiate erenate-tbbed border : tubercles nearly 



marginal, pure white. Ach /, 1. f. 6. 

 iijeoidea. Leprous, mealy, white: tubercles becoming concave, de* 



formed, margined, of the fame colour. Hoff. t. 7./*. 5. 

 thelena. Irregular, very thin, with a warty area, fomewhat mealy 



pure white : tubercles becoming conoid, bearing the fructificati- 

 on at top, which is very minute and of the fame colour* Ach. 

 huceftigma. Blackifh-brown, effufe ; tubercles fcattered, concave, 



minute, white. Achar. t. 1. /*. 7. 

 viridulaP Thin, mealy, greenifli grey : tubercles hemifphserical* 



•green. Hoffm. /. 2- /. 6. 



