-2 
P laaterkill Clove. In fact in all directions this region is rich in mosses, 
hepatics and lichens, and the enthusiastic botanist may for weeks revel 
in a succession of profitable trips afield. Germantown, Pa. 
ADDITIONS TO THE LICHEN-FLORA OF SOUTHERN 
CALIFORNIA. No. 5. 
H. E. Hasse. 
Caloplaca erythrella (Ach.) var. rubescens (Ach.) comb. nov. Lecanora 
erylhrella h.C\\. var. rubesce?is Kch. in Ach. Li. Un. 402, 1810. Lecanora 
aurantiaca Lightf. var. rubescens Schaer. in Leight, Li. FI. Gr. Bri. 3d 
ed. 207, 1879. 
Subsp. Lecanora erythrella Nyl. f. rubescens Nyl. in Crombie Br. Li. 
347. 1894. 
Thallus light clay colored, effuse, almost disappearing, with KHO 
crimson. Forming small patches almost covered by the crowded apothecia, 
these are sessile, small, 0.25 to 0.5 mm. in diameter, congregated into 3 to 4 
mm. wide groups; disk is orange, mostly flat with a whitish, thin, thalline 
margin, with KHO purple. Epithecium subcontinuous, yellow; thecium 
colorless, 56/^1.060/^ high; paraphyses loosely coherent ; hypothecium color- 
less; asci inflated clavate; spores in 8-s, ellipsoid and oblong- ellipsoid, 
polari-bilocular, an isthmus absent or in some spores faintly discernable, i6// 
to 23/^ long, 8/^ to 9.5/4 thick. Hym Gel. with lofl. blue, with KHO erimson. 
On argillaceous rocks near the Soldiers Home, collected in 1900. 
Lecanora thamnoplaca Tuck in Tuck. Syn. I. 183. 1882. 
Thallus thick, pale buff squamules, imbricated, entire or lobulated at the 
circumference toward the center more erect, flattening at the top and some- 
what subfruticulose ; both the upper and lower surface corticated ; apothecia 
numerous, innate, from 0.5 to 2 mm. wide, disk flat to lightly convex, dark 
brown, smooth to papillate; epithecium continuous, red-brown; thecium 
colorless, 80/4 to 88/4 high; paraphyses coherent, stout, septate; hypothecium 
colorless; asci inflated clavate, 8-spored; spores ovoid 8/4 to 11/4 long, 7,44 to 
8/4 thick. Hym. Gel. with lod. indigo blue, soon changing to sordid grayish- 
brown ; spermogones not seen. 
On granitic and igneous rocks near Little Lake, Inyo County at 1350 
meters elevation Collected in April, 1910. 
Placynthium nigrum(Huds.)S. Gray subsp. P. psotinum (Cromb.) comb. nov. 
Pannaria psotina (Ach.) in Leight, Li. FI. Gr Bri., 3d ed. 156. 1879. 
P annarla nigra Nyl. Subsp. psotina Cromb in Cromb. Br. Li. 343 1894. 
Thallus coralloid crustaceous, similar in color and form to the type, 
though less robust and the apothecia also smaller o 4 to o. 5 mm. in width. The 
spores are ovoid, 13/4 to 15/4 long, 7/4 to 8/4 thick, three and four-locular, the 
loculi often slightly irregular in size and form. 
On calcareous rock. North Fork of the Matilija Canon, Ventura County, 
Collected in April, 1903. 
