-48- 



last stations the apothecia are less developed than in the San Clemente speci- 

 men; the spores in both insular plants are alike. 



BuELLiA INQUILINA Tuck. Apothszia apparently parasitic upon the thallus 

 of Lecanora saxicola (Poll.) Ach., occupying the central part of the host lichen, 

 the color of which is changed to a sordid grayish brown, while the peripheral 

 unoccupied lobes retain their normal color. The apothecia are sessile, solitary 

 or, mostly, grouped and contiguous on a squamule, from 0.3 to 0.75 mm. wider 

 disk flat to slightly convex, slightly papillate, black, the medium thick margin 

 also black with a slight brownish tinge; epithecium subcontinuous, of the color 

 of Van Dyke brown; thecium colorless, 6o^i to 64^ high; paraphyses loose or free 

 with globular tips; asci clavate and inflated clavate; spores 8, brown, bilocular, 

 oviod-ellipsoid, both ends rounded, each loculus with a round spot, slightly con- 

 stricted, I2fx to i6m long, 7/i to 9^1 thick; hypothecium concolorous with the 

 epithecium; hymenial gelatine with iodine deep blue, the asci changing to a dark 

 copper-red, the tops of some asci remaining blue; no change with KHO. Not 

 having an authentic specimen for comparison, the above name of Tuckerman 

 (Syn. 2: 105) is given provisionally, the spore measurements agreeing well with 

 the description. 



On Quartz near Eden Hot Springs, Riverside County. 



Arthopyrenia biformis (Borr.) Muell. Arg. 



Verrucaria biformis Borrer. 



Thallus silvery gray, finely squamulose-pulverulent, diffuse; apothecia 

 scattered, prominent, semiglobular or somewhat subconical, perithecium dull 

 black or shining, ostiole minute, punctiform depressed; paraphyses free, slender, 

 distantly branching; asci cylindric, 100^ long, ii/j, thick, eight-spored; spores 

 ellipsoid, bilocular, colorless, i2/x to 17/x long, "jfu, to 8^t thick, the partition often 

 oblique, dividing the spore unsymmetrically ; hypothecium pallid. Iodine does 

 not stain the ascus membrane, but its ontents become vinous red, the thecium 

 and paraphyses yellow. 



- Catalina Island on Heteromeles arhutifolia (Poir.) Roem. 



Determined by Dr. A. Zahlbruckner. 



REVIEWS 



Leopold Loeske: Studies in the Comparative Morphology and the 

 Phylogenetic Taxonomy of Mosses. Berlin, 1910* 



In German. A profoundly interesting treatise of 222 pages, with a Fore- 

 word, an Introduction, 37 meaty chapters, and a Concluding Word: all replete 

 with suggestions, largely based on years of field observations, illuminating the 

 phyletic relations of mosses. The author proceeds in all his discussions with 

 refreshing courage and independence of judgment. Servility is foreign to Dr. 

 Loeske's nature. The criticisms and strictures he makes on current moss sys- 

 tems and their authors show him a worthy and able, but also a courteous and 



* See 3rd Cover. 



