—47— 



becoming large, from 0.5 to 1.5 mm. wide, disk at first plane with an entire 

 elevated margin, finally convex and the margin obsolete, darker in color than 

 the thallus and at last dull black, a few disks showing a faint whitish bloom in 

 the center but the greater number naked. Epithecium subcontinuous, brown; 

 thecium colorless, G/^ix to high; paraphyses coherent, thick (2^^ to 3/>t), septate^ 

 as seen after KHO, not furcate; asci clavate, long, 14/^ thick, nearly reaching^ 

 the colored epithecium; hypothecium colorless; spores 8, ovoid, gn to 11 n long, 

 5iu to G/j. thick, epispore thin and indistinct, the spore contents minutely granular, 

 giving the spore-containing ascus the appearance of an Acarospora. Hymenial 

 gelatine with iodine blue, rapidly changing to a rich dark copper red, the epithe- 

 cium not becoming stained; KHO gives finally a sordid orange color; no change 

 with NO5 except a paling of the epithecium. 



On quartz at Eden Hot Springs, Riverside County. 



Caloplaca pollinii (Mass.) Jatta. 



Placodium ferrugineum (Huds.) Hepp var. pollinii Tuck. Syn. N. A. L. 

 1: 177. 1882. 



Thallus of minute, dispersed gray granules or obsolete; apothecia small, 

 adnate, not over 0.5 mm. wide, disk flat, dull brown-black; epithecium granu- 

 lose, pale brownish; thecium colorless; paraphyses loosely coherent, their tips 

 globular; hypothecium colorless; asci clavate or oblong; spores 8, oblong-ellip- 

 soid, colorless, polarilocular with a faint connecting tube, becoming plainer 

 after KHO; 12/i to 17^ long, 5^ to jij, thick; all structures stain blue with iodine. 

 The mature apothecia are biatorine in aspect, but those of a younger state have 

 a thin and inconspicuous yet distinguishable, thalline margin. 



On dead wood at Eden Hot Springs, Riverside County. 



Lecidea (Section Biatora) leucophaea (Flk.) Th. Fr. form genuina 

 (Koerb.) Th. Fr. 



Thallus thin, pale gray to dirty white, of small, dispersed, flat squamules, 

 uniting in places to an areolate crust, KHO, Ca(C10)2; medullary hyphae giv- 

 ing no reaction with iodine. Apothecia subinnate, later sessile, from 0.3 to l.o 

 mm. wide; disk flat with a subprominent margin, at length becoming convex 

 and the margin obsolete, in color brown-black when dry, red-brown when moist, 

 now and then conglomerate; epithecium subcontinuous, bluish black or also 

 yellowish brown; thecium colorless, 6opL to So/j, high; paraphyses loosely co- 

 herent or separate, entire, simple, slightly thickened above; hypothecium color- 

 less or of a pale straw color; asci clavate, eight-spored ; spores colorless, simple, 

 oblong-ovoid, 12^ to 17^ long, 7/x to lo^ thick, apparently falsely and irregularly 

 septate, but clearing after the action of KHO; hymenial gelatine with iodine 

 blue, soon dingy brownish and the asci vinous red; NO5 staining the epithecium 

 a sordid crimson. 



On sandstone, Topanga Canon, Santa Monica Range. 



Schizopelte californica Th. Fr. Specimens have been communicated to me 

 by Mrs. Blanche Trask, who collected it on San Clemente Island in 1902, and 

 the species has recently been found by me on beach rocks on Catalina Island 

 and also on rocks, but sterile, near Newport, Orange County. In both these 



