HASSE—LICHEN FLORA OF SOUTHERN CALIFORNIA. 125 
lighter, irregularly rimose in the center and radiate at the periphery, the linear, 
narrow, contiguous radii forked or crenate and slightly dilated at the extremities, 
occasionally the peripheral ends whitish pruinose; apothecia rarely seen, small, not 
over 0.25 mm. wide, the disk plane, brown black with a thin, persistent thalline 
margin; epithecium subgranulose, brown; thecium 88» high; paraphyses loose, 
thick, with 2 or 3 septa, the internodes a little enlarged, the apices grayish brown; 
hypothecium of the color of the thallus; asci 48 to 52 long, 20 to 24 » thick, the mem- 
brane thickened above; spores 8, ovoid and blunt-ellipsoid, brown, bilocular, 14 to 
17 » long, 7 to 10 » thick, a round spot in each loculus, with iodine a handsome blue, 
no change with KHO. 
On micaceous rock in the San Gabriel Mountains and on trap in Topanga C any on of 
the Santa Monica Range. 
In the higher mountains of our district a Rinodina occurs having the thallus of the 
color of this species or darker, but in general form and size conforming with Rinodina 
radiata, the disk at first punctate, immersed, later similar to that of R. radiata, but 
unlike both thysanota and radiata, neither disk nor thallus ever found pruinose. 
5. Rinodina turfacea (Wahl.) T. Fries. 
Crustaceous, verruculose or indeterminate, pale brownish ash color, KHO—, 
Ca(ClO).-—, the hypothallus indistinct; apothecia crowded in groups, adnate-sessile, 
0.25 to 1 mm. wide; disk planoconvex, black; thalline margin persistent, thin, entire 
or crenulate; epithecium subcontinuous, yellowish brown; thecium colorless, 100 to 
124 » high; paraphyses loose, thé tips clavate and brownish; hypothecium pale yel- 
lowish tinted; asci inflated-clavate; spores 8, oblong-ellipsoid, bilocular, not at all or 
barely constricted, 16 to 36 » long, 8 to 16 4 thick, with an obcordate spot in each 
loculus, the mature spores reddish brown, the spots of a light gray shade. 
On earth and decaying roots; Santa Catalina Island on the latter substratum; on 
earth at Point Loma; on earth in crevices of rocks, Santa Monica Mountains in Topanga 
Canyon and Cahuenga Pass. 
Our plant is the forma nuda T. Fries. The disk is naked, distinguishing it from the 
forma roscida (Sommerf.) T. Fries, which has a pruinose disk and has not as yet 
been found with us. The forma minaraea Nyl. (R. minaraea (Ach.) T. Fries) is much 
the same, the thallus uniform, the apothecia sessile, the disk strongly convex, reddish 
black and black, excluding the thalline margin. It is found on earth in the Santa 
Monica Range. 
6. Rinodina conradi Koerb. 
Thallus uniform, rugulose-verrucose, sordid yellowish gray, KHO—, Ca(Cl0),— 
apothecia at times quite numerous, sessile, 0.5 to 0.8 mm. wide; disk flat to plano- 
convex, brown blackish; thalline margin turgid, persistent, entire to crenulate; 
epithecium grayish yellow with a tinge of brown; thecium 116 to 120 # high, colorless, 
now and then a dash of pale straw color descending from the epithecium; paraphyses 
coherent, clavate at the colored tips, and after action of KHO seen jointed; hypo- 
thecium pale straw color, paler than the epithecium; asci inflated-clavate and ventri- 
cese; spores 8, reddish brown, 24 to 31 u long, 12 » thick, bilocular but by a secondary 
septation appearing 4-locular, epispore thin; hymenial structures stained blue with 
iodine. 
On earth in the Santa Monica Range. 
The thallus is similar in color to that of R. angelica Stizenb., but the latter is coarser, 
lobate at the periphery, and with the spores not so acuminate as those of R. conradi. 
7. Rinodina confragosa (Ach.) Koerb. 
Crust whitish to ash-colored, thick, verrucose, the verrucee becoming squamules 
and crenulate, KHO+yellow, Ca(ClO),—; apothecia sessile, reaching 1.25 mm. in 
width; disk flat, dark brownish black with a turgid, crenulate thalline margin;:epi- 
