HASSE—LICHEN FLORA OF SOUTHERN CALIFORNIA. 29 
KEY TO SPECIES. 
Growing on rock. 
Thallus compressed............20-2-.-2- 2020 cece cece eee eeeeee 1. R. fuciformis. 
Thallus terete...........20..--22022 222 e eee eee eee cee eeeeeeeee 3. R. tinctoria. 
Growing on bushes... .. 222.22... 020 eee cee eee eee eee eee 2. R. fucoides. 
1. Roccella fuciformis (L.) Lam. & DC. 
Thallus erect, fruticulose, dull whitish or grayish, glaucescent, compressed, sparingly 
dichotomously divided below into long-attenuate, flattish, narrow, ribbon-like seg- 
ments, KHO—, Ca(ClO).+red, 5 to 10 cm. high; apothecia sessile, flat, pruinose, of 
the same color as the thallus, marginal and lateral with a persistent, entire or finely 
crenulate thalline margin, this finally becoming flexuose, the disk now and then almost 
difform and denuded, dark and roughened; epithecium granulose, yellowish gray, 
gradually paling downward; thecium colorless, 100 to 136 « high, with iodine pale 
yellow; paraphyses slender, branching; hypothecium black brown; asci clavate and 
subinflated-clavate, membrane thick, 76 # high, 18 » thick; spores colorless, straight 
or lightly curved, 4-locular, 20 to 28 » long by 5 to 7 » thick; spermatia acicular, arcu- 
ate and hook-shaped. 
On rocks, Santa Catalina Island, Trask; Point Loma near San Diego, on shrubs. 
North and South America, East Africa, Asia Minor, and Europe. 
2. Roccella fucoides (Dicks.) Wain. 
‘“‘Thallus coriaceous, terete-compressed, dwarfish, dichotomously at length much 
branched, whitish ash colored, often sorediferous; spores 12 to 16 # by 3 to 4 p.”’ 
A plant thus described is reported from San Diego (Tuck.) ‘‘growing on bushes, etc.” 
3. Roccella tinctoria (L.) Lam. & DC. 
“Thallus coriaceous, terete, but often more or less flattened and pale, dull; spar- 
ingly branched but much elongated and intertangled; apothecia middling to ample, 
sessile, disk flattish, black, equaling or excluding the margin. Spores fusiform- 
oblong, 20 to 26 w by 5 to 8 .’’ (Tuckerman.) 
Reported by Mr. C. R. Orcutt! from San Diego. 
North and South America, Asia, Europe, and Africa. 
SCHIZOPELTE T. Fries. 
Thallus erect, forked, the branches terete; apothecia terminal; disk irregularly 
incised or parted; hypothecium black; paraphyses branching; spores fusiform, 
brown, 3-locular. 
1. Schizopelte californica T. Fries. 
Thallus whitish (becoming cream-colored in herb.), terete, erect, fruticulose from a 
fasciculate tuft, distantly branching or furcate above, finely furfuraceous, with cepha- 
lodia, from 3 to 7 cm. high, KHO—, Ca(ClO),+red; apothecia terminal and lateral, 
subpedicellate, oblique, irregularly lobed to flexuose and deeply lobed and difform; 
disk dull black, thinly pruinose, flattish to concave; thalline margin persistent and 
here and there coarctate; epithecium dark brown black, subgranulose; thecium about 
100 » high, dingy yellow with iodine; asci oblong-cylindrical, 72 » long, 18 » thick; 
spores in 8’s, longitudinally or diagonally disposed, 18 to 24 » long, 5 to 7 # thick, 
brown, oblong, 4 to 7-locular, the end cells a little larger than the others. 
On San Clemente Island, Trask; on rocks, Santa Catalina Island. 
Suborder CYCLOCARPINEAE. 
Large subdivision presenting all thalline forms from the crustaceous to the foliose 
and fruticulose; likewise all algae known to form symbiosis with fungal hyphe repre- 
sented, this an important systematic character; apothecia for the greater part open or 
1 Fl. South. & Low. Calif. 12. 1885. 
