thalline margin; epithecium granulose-yellowish to pale brownish-gray, gradually 

 paling downward; thecium colorless, 8ofx to 84/i high; paraphyses rather loosely 

 coherent, their tips clavate. I have been able to see but few forked above 

 Hypothecium pallid to colorless; asci inflated clavate to oblong ellipsoid, 72/x. 

 to 8o^t long, I2ju to i6fjL thick; spores numerous, minute, simple, oblong, some- 

 what contracted in the middle and apparently spuriously two celled or polari- 

 locular, 3m to 4^ long, 2ju to 3^1 thick. Hymen, gel. with iodine blue soon chang- 

 ing to sordid bluish brown, KHO— . 



On Cercocarpus parvifoUus Nutt., Santa Monica range above Sherman. 

 On account of the thin and often insignificant thalline margin, as compared with 

 the species, Dr. Zahlbruckner has made it provisionally a variety. So far as 

 known to the writer Maronea has not heretofore been reported from the Pacific 

 coast. 



Type variety deposited with Dr. A. Zahlbruckner; the U. S. National 

 Herbarium, Washington, D. C; the Academy of Sciences of Sourthern Cali- 

 fornia and in Herb. Hasse. 



Dermatocarpon (Section Endopyrenium) Zahlbruckneri Hasse sp. 



NOV. 



Thallus crustaceous, uniform squamulose-areolate, grayish with a tinge of 

 fed. Squamules more or less aggregate, 0.5 to i.o mm. wide, convex, in outline 

 round to oval or angular; upper surface pseudoparenchymatous-corticate, of 

 brown cells, thin {lOix to 12^1) at place of perforation of the perithecium, increas- 

 ing in thickness to 13OM to 138^ in the interspaces of the one to six perithecia 

 contained in each squamule; the ecorticate lower surface attached by medullary 

 hyphae to the substratum. Perithecia umbilicately impressed in the thallus, 

 spherical to ovoid, SOjx to 88yu in diameter and 130^1 to 138/z deep; the exposed 

 upper part of the perithecium dark brown, the immersed portion light flesh color 

 and soft; gonidial layer subtends the cortex, medulla composed of closely packed 

 hyaline cells; paraphyses gelatinous; asci oblong-ellipsoid and saccate, 72/i to 

 76/x long, 28/i thick, the membrane gelatinous; spores 8, colorless, simple, narrowly 

 oblong-ellipsoid, 17^1 to 24/i long, 4// to 7ai thick, variously disposed in the asci; 

 hypothecium colorless; spermogones imbedded, enclosed in a pallid sac; spermatia 

 short , straight, fusiform, ellipsoid, 12^1 long, 2^1 thick; sterigma acicular straight 

 I2n to 201X long. Hymen, gel. stains yellow with iodine, ascus membrane and 

 spores do not stain. 



On trap rock, Topanga Canon, Santa Monica range. 



Externally similar to D. monstruosum (Mass.) but difl'ering in its uniform 

 thallus and size of the spores. It is named for Dr. Zahlbruckner, who designated 

 it as a new species. Type deposited with Dr. Zahlbruckner, the U. S. National 

 Herbarium, Washington, D.C.; the Herbarium of the Academy of Sciences of 

 Southern California, and in Herbarium Hasse. 



H. E. Hasse 



Santa Monica, California. 



