124 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
la. Rinodina radiata fimbriata Tuck. 
“Thallus depauperate,’’ without the peripheral radiation, the limiting black hypo- 
thallus distinct. . 
With the species but less frequent. 
1b. Rinodina radiata lactea subsp. nov. 
Thallus appressed, white, orbicular, pulverulent, rimose-areolate in the center, 
radiate-lobate at the periphery, the radiating lobes contiguous, flattened and slightly 
dilated outward, with an entire or subcrenulate border; hypothallus black, not distinct, 
KHO—, Ca(ClO),—, the medulla with iodine—; apothecia innate to adnate, crowded 
in the center, 0.25 to 1.25 mm. wide; disk flat to at last convex, dull black, perma- 
nently densely white pruinose; thalline margin permanent, mostly thin; epithecium 
granulose, pale dingy yellowish; thecium colorless, 60 4 high, deep blue with iodine, 
including the epithecium; paraphyses coherent, strict, scarcely clavate at the tips, 
indistinctly septate; hypothecium brown, darker than the epithecium; asci clavate, 
the membrane thickened above; spores 8, 9 to 15 w long, 4 to 8 » thick, blunt-ellipsoid, 
bilocular, brown, constricted, the epispore thin; sterigma narrowly inverted-clavate, 
very indistinctly jointed; spermatia short, straight, 6 to 8 » long, 1 to 1.5 » thick; 
spermogones indicated by minute black dots. 
On calcareous and argillaceous rocks in the vicinity of the ocean. The type is from 
Santa Catalina Island, but the same is found also at Newport along the beach bluffs. 
Type deposited with Dr. A. C. Herre; duplicate in herb. Hasse. 
2. Rinodina oreina (Ach.) Mass. 
Crustaceous, palesulphur color, closely appressed, the center rimose-areolate, becom- 
ing radiately lobed at the periphery, often blackish-suffused, giving the whole plant 
a dark appearance; apothecia innate, emerging to adnate, 0.5 to 1 mm. wide; disk 
black, at last slightly convex; thalline margin entire; paraphyses coherent; asci 
clavate; spores 8, round-ellipsoid, bilocular, brown, 9 to 12 long, 5 to 8 » thick, 
little or not at all constricted, the epispore thin. 
Not infrequent in the mountains above 1,500 meters. On quartzose rocks in the 
San Gabriel, San Bernardino, and San Jacinto Ranges. Occurs in the northern and 
western United States and in Europe. 
3. Rinodina angelica Stizenb.; Hasse, Bull. Torrey Club 24: 447. 1897. 
Thallus crustaceous, rimose-areolate, or squamous, becoming lobate at the circum- 
ference, the squamules contiguous, light grayish flesh color, the fertile ones subverru- 
cose, prominent, KHO + greenish yellow soon crimson, Ca(ClO),—; apothecia innate to 
adnate; disk flat, occasionally emerging to planoconvex, 0.25 to 1 mm. wide, dull 
black or with a faint bloom; thalline margin persistent, in well-developed specimens 
turgid, entire or crenulate; epithecium granulose, yellowish brown; thecium 120 to 
128 » high; paraphyses subcoherent, with round, colored heads or but slightly clavate 
and not colored above, indistinctly jointed, not forked; hypothecium colorless or 
nearly so; asci inflated-clavate to ventricose, the membrane thickened at top; spores 
8, brown, bilocular, 16 to 26 w long, 8 to 12 » thick, the spots of the loculi obcordate 
with an isthmus; epithecium and hypothecium with KHO + orange and the thecium 
yellowish orange; spermatia 4 to 6 » long and less than 1 » thick, straight. 
On rocks. Type locality, foothills of the Santa Monica Range near the Soldiers’ 
Home. It is frequent in the Santa Monica Range and southward, but has not been 
found above about 1,500 meters; Santa Catalina Island. 
Type deposited in the Herbarium of the New York Botanical Garden; duplicates 
in the U. 8. National Herbarium, with Dr. A. C. Herre, and in herb. Hasse. 
4. Rinodina thysanota Tuck. 
Thallus crustaceous, closely affixed, forming round patches 5 mm. wide and by 
aggregation increasing to several centimeters, in color sienna brown or somewhat 
