114 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
the disk staining bright crimson, the thalline margin also but more slowly; epithecium 
subgranulose, yellow; thecium colorless, with iodine deep blue, the yellow epithecium 
purple; hypothecium colorless; paraphyses loosely coherent, with globular heads, 
jointed and some furcate above; hypothecium colorless; asci clavate; spores 8, ellip- 
soid, 13 to 16 « long, 7 to 8 » thick, polari-bilocular, the isthmus very faint, in some 
spores invisible. 
Frequent on various barks, less often on stone. 
4. Caloplaca gilva (Hoffm.) Zahlbr. in Engl. & Prantl, Nat. Pflanzenfam, 1!*: 228. 
1907. 
Verrucaria gilva Hoffm. Deutschl. Fl. 2: 98. 1795. 
Thallus indeterminate, ash gray, granular to verrucose, KHO+- crimson; apothecia 
adnate-sessile, small, 0.2 to 0.5 mm. wide; disk flat, orange; thalline margin thin, 
entire, persistent, yellow to light orange, with KHO like the disk; epithecium a thin 
yellow line, subgranulose; thecium colorless; paraphyses loosely coherent, the heads 
globular; hypothecium colorless; apothecia clavate; spores 8, ellipsoid, 13 to 16 4 long, 
5 to 6 » thick; hymenial gelatine, except heads of paraphyses remaining unchanged, 
staining blue with iodine. 
Frequent on barks. Santa Cruz Peninsula, Herre. Cosmopolitan. 
5. Caloplaca citrina (Hoffm.) T. Fries. 
Thallus sordid yellowish, granulose, effuse, forming a coarsely rimose crust, KHO+ 
purplish; apothecia adnate-sessile, small, crowded; disk soon convex, yellowish to 
orange; thalline margin thin, crenulate, later almost obsolete; epithecium subgranu- 
lose, rich yellow; thecium colorless, with iodine violet blue; paraphyses coherent, 
jointed, not branched, their heads globular; asci inflated-clavate ; Spores 8, ellipsoid, 
polari-locular, no isthmus seen, 14 to 18 » long, 7 to 8 pu thick. 
On argillaceous bowlders, Santa Monica Range. 
6. Caloplaca microphyllina (Tuck.). 
Placodium microphyllinum Tuck. Syn. N. Amer. Lich. 1: 174. 1882. 
Has been reported from Southern California, but authentic specimens are not avail- 
able for description. 
7. Caloplaca fulgens (Swartz) Zahlbr. in Engl. & Prantl, Nat. Pflanzenfam. 1!*; 
228. 1907. 
Inchen fulgens Swartz, Nov. Act. Soc. Sci. Upsal. 4: 246, 1794. 
Thallus pale yellowish, mealy, forming small monophyllous or seubmonophyllous 
patches, from 1 to 2 cm. wide, closely adherent to substratum, rugulose in the center, 
imbricate-lobate at the periphery, the border of the lobes at times yellowish-suffused, 
KHO- purplish; apothecia sessile, single or two in a patch; disk flat to convex, rusty 
red to rusty orange; thalline margin crenately interrupted, finally obsolete; epithecium 
subgranulose, deep or dark yellow; thecium colorless, 60 to 80 » high, this and the 
epithecium with iodine deep blue; paraphyses adglutinated, some barely clavate at 
the tips; hypothecium yellowish or milky; asci clavate; spores narrowly ellipsoid, 
9 to 13 p» long, 3 to 4.5 » thick, straight or lightly curved, simple or faintly bilocular. 
On earth near Palm Springs at 140 meters above sea level. Western and northern 
North America; Europe; Africa (Algiers); New Zealand. 
8. Caloplaca cirrochroa (Ach.) T. Fries. 
Thallus suborbicular, thin, adnate, citrine yellow, the radiating lobes of the circum- 
ference not contiguous, short, not well developed, the larger part of the thallus, the 
central, an areolate, sorediate crust, KHO+ purple; apothecia not seen. 
Occasional in the Santa Monica Range, on sandstone. 
9. Caloplaca bolacina (Tuck.) Herre, Proc. Washington Acad. Sci. 12: 233. 1910. 
Placodium bolacinum Tuck. Lich. Calif. 18. 1866. 
