—103 — 
Thallus ash colored with a shade of brown, crustaceous, indistinctly sub- 
granulose; hypothallus obscure; apothecia closely sessile, black, minute to 
small, the larger plano-convex with a concolorous, persistent margin; epi- 
thecium of discrete, blackish-brown globules; thecium from 0,060 to 0.064// 
high, colorless, reacting blue with iodine; paraphyses free, some of them 
thickened at the tips and with dark, globular heads; hypothecium brown, of 
lighter shade than the epithecium; asci clavate, 0.040 to 0.044 // long and 
0.007 to 0.008// thick; spores in eight’s, colorless, bilocular, ellipsoid, 0.006 to 
0.011 // long and 0.002 to 0.003 M thick. 
On Rhus diversiloba T. & G. in canons of the Santa Monica Mts. The 
similarity in the color of the thallus with that of the bark of the host and the 
minute apothecia tend to make this a very inconspicuous plant. 
Bacidia endoleuca (Nyl.) Kicix, 
Lecidea mil liar ia Fr. var. endoleuca Leight. Leighton Li. Flor. Gr. 
Brit. 3d. edit. 1879, P- 3 ^ 3 - 
Biatora atrogrisea (Delis.) Hepp. Tuck. Syn. Li. N. A. II. 1888, p. 44. 
Bacidia (Section Eubacidia A. Zahlbr.) endoleuca (Nyl.) Kickx. Asco- 
lichenes A. Zahlbr. in Engler & Prantl, 1907, p. 136. 
Thallus smooth, rimose, light greenish-greyish, indeterminate, epi- 
phlaeoida; hypothallus indistinct; apothecia small, brown, darkening to 
brownish-black and from flat to convex; margin indistinct; when moist the 
disk is light brown to brown and appears semi-translucent. Epithecium 
continuous, a thin, ' pale, bluish-grey line that with IvHO is tinted a 
violaceous; thecium 0.052 to 0.060// high, with iodine it and the epithecium 
are stained blue then reddish brown; paraphyses loosely coherent, clavate 
at the apices; hypothecium yellow; asci clavate; spores in eight’s, acicular 
straight, one end slightly thickened, indistinctly four to plurilocular, 0.028 
to 0.042// long and 0.005 to 0.003// thick. 
On Acer macrophyllum Pursh. in canons of the San Gabriel Mts. 
Acarospora glebosa Korb. 
Acarospora glebosa Korb. Th. M. Fr. Lich. Scand. I, 1871, p. 214. 
Acarospora glebosa Korb. Ascolichenes A. Zahlbr. in Engl. & Prantl, 
1907, 153 . 
Thallus composed of round, reddish-brown, convex squamules not 
exceeding one millimeter in width, somewhat scattered or approximate and 
then the squamules angular and rimose; apothecia small, punctiform, 
depressed, mostly single at the apex of the squamule, seldom two, or the 
disk is slightly enlarged and then concave, dull black with a rim of thalline 
margin; epithecium continuous, dark reddish brown; thecium colorless, 
0.0120 // high, stained blue with iodine, particularly the hypothecium, being 
dark blue while the epithecium gives no reaction ; paraphyses moderately 
stout, loosely coherent but adglutinated at the tips; hypothecium colorless; 
asci ventricose; the sac thickened at the top, 0.100// long, 0.036// thick; 
spores 24 in each asci, bluntly ellipsoid, 0.011 to 0.018// long, and 0.005 to 
0.008// thick; the Protococeus gonidia form a thick subcortical layer that also 
extends under the hypothecium throughout. 
