-46- 



yellow, the ascus contents, bullate and peduncular part, which is evidently- 

 pervious, reddish with KHO; with NO5 dull violet purple. 



On granitic rock at Eden Hot Springs, Riverside county. 



Mycoporellum Hassei A. Zahlbr. n. sp. 



Thallus epiphloeodal, effuse, whitish-ash colored, thinly squamulose. Apothe- 

 cia scattered, 0.4 mm. to i mm. wide, dull black, flattish, under the hand-lens 

 finely papillate; paraphyses absent; asci oblong-ellipsoid, Go/jl to 8om long, 20/1 

 to 28/x thick, the membrane about 3/i thick, the top attenuated and solidly 

 thickened; spores 8, colorless, bilocular, oblong, 201J. to 28^ long, 8^ to lOfx thick, 

 the lower cell slightly thinner and longer than the upper. Hymenial gelatine 

 with iodine pale yellow, the ascus contents pale vinous, no change with KHO. 



Dr. A. Zahlbruckner writes under date of Jan, 27, 1912: "Von den uebrigen 

 Mycoporellum Arten mit 2-zelligen, farblosen Sporen durch die grosse Zahl der 

 Muendungen des Apotheciums (15-18) unterschieden, ausserdem von M. Lahmi 

 durch kleinere Sporen und von M. ellipticum durch die nicht zylindrischen 

 Sporen abweichend; am naechsten kommt sie noch der M. Eschweileri, doch 

 dieses hat nur wenig Ostiola. " 



On Crossosoma Calif ornicum Nutt., Catalina Island, near Avalon, the type 

 locality. 



The next species is believed to be new to North America. 



Dermatocarpon intestiniforme (Koerb.) Hasse nov. comb. 



Endocarpon intestiniforme Koerber, Parerga. 42. i860. 



Thallus polyphyllous, cespitose, color creamy gray or sometimes with a 

 faint bluish tint. Borders of the central squamules deflected downward, form- 

 ing bullose cavities of the coarsely areolate central part. The areoles are round- 

 ish, subangular or frequently undulate wavy, each squamule containing as a 

 rule several apothecia; the peripheral squamules are foliaceous, expanded and 

 subimbricate. Apothecia at first immersed, later becoming prominent, the ex- 

 truding perithecium dull black with a minute ostiole, the immersed part soft, 

 globular to flattened globular, of a pale flesh color; thecium colorless; paraphyses 

 gelatinous, indistinct; asci cylindric or bottle shaped; spores eight, blunt ellip- 

 soid, colorless, faintly granular, i2/i-i8ju long, 6/^-9^1 thick; hymenial gelatine 

 with iodine blue soon changing to orange-brown; no reaction with KHO. 



On rocks and earth in rock crevices. North Fork of Matilja Canon, Ven- 

 tura Co., Eden Hot Springs and Palm Springs, Riverside Co., and Grand Canon, 

 in Arizona. 



Of the following species all but the last were described in Tuckerman's 

 Synopsis of the North American Lichens, but it has seemed worth while to give 

 the more detailed descriptions based on my own observations. 



Lecanora melanaspis (Ach.) Th. Fr. var. alphoplaca (Wahlenb.) Th. Fr. 



Thallus crustaceous at the center, closely affixed and covered by numerous 

 apothecia, becoming lobed towards the periphery, the lobes oblong or rounded, 

 entire or variously divided and even stellate in outline, dull brownish gray with 

 a more or less marked whitish margin, the peripheral lobes loosely affixed and 

 whitish beneath, each lobe containing from one to several apothecia; apothecia, 



