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A tropical lichen described from New Caledonia, Jamaica, and Calcutta. 

 Found on the trunk of a street shade tree {Acer sp.), near the Mission in Santa 

 Barbara; altitude lOO meters. 



Opegrapha atra Pers. in Ust. Ann. Bot. 7: 30. pi. i,f. 2. 1794. 



Thallus very thin, forming smooth brownish or yellowish or dusky gray 

 patches, darkened by KOH. Apothecia small, linear, simple, straight, or flex- 

 uose, depressed and closely adnate, margin thick; disk a narrow crevice; hy- 

 pothecium broad, brown to blackish brown; paraphyses short, simple; asci 

 short, more or less top-shaped, with I bluish then vinous red, outer portion 

 greenish; spores colorless, 4-celled, their tips more or less pointed, 4 to 5.5^ broad 

 and 13.75 to 16. 4m long. 



On the bark of Umhellularia calif ornica in the Berkeley Hills; altitude 100 

 to 200 meters; not abundant. 



ToNiNiA RUGINOSA (Tuck.) Herre. Proc. Wash. Acad. Sci. 12; 103. 1910. 



Lecidea ruginosa Tuck. Lich. Calif. 25. 1866. Syn. N. A. Lich. 2: 64. 

 1888. 



To the description given by Tuckerman, the only one to previously examine 

 this rare lichen, I add the following data: Epithecium thick, very dark violace- 

 ous or reddish, almost black, no reaction with KOH; paraphyses simple, free, 

 lax, slender, with enlarged bulbous pale violaceous tips; asci slender, narrowly 

 clavate, 5 to 7^1 broad and 30 to 40^ long; hypothecium yellowish to brownish, 

 or in very thin sections quite colorless; thecium blue with I; spores 2 to 8-celled 

 acicular, 2-3/z broad and 16-23.5^1 long. 



I have collected this very sparingly on the shaded under side of serpentine 

 ledges in the Oakland Hills, at an altitude of 300 meters. The thallus agrees 

 with Tuckerman's description; but the apothecia average much smaller, while 

 the spores are a great deal shorter, Tuckerman giving their length as from 25- 

 40/>i. Not known elsewhere. 



Heppia alumenensis Herre, sp. nov. 



Thallus of medium sized to very small umbilicate, irregular, centrally 

 thickened squamules, which are frequently grouped so as to resemble some 

 small Collema, their surface irregular, more or less granulose to verrucose, lobes 

 small, irregular, dingy black or greenish black, under surface a flesh tint, more 

 or less obscured by blackish granules, therefore appearing more or less dusky; 

 alga Scytonema, the gonidia globose to oval, 9 to 13^1 in diameter; no chemical 

 reactions. Apothecia one to several in a squamule, small, at first subglobose, 

 the disk very narrow and dotlike, later becoming rather broad, disk flat, red- 

 dish-brown to concolorous, margin thick, entire; hypothecium clear; paraphy- 

 ses simple, septate, 2.2 to /[.^/j. broad with enlarged, pale yellow tips; fertile 

 asci infrequent, oblong-clavate and ventricose-oblong, 26 to 28^ broad and 

 68 to 79^1 long; thecium blue, then sordid reddish-yellowish with I; spores 16, 

 20, 24, 32, and very numerous in the asci, colorless, simple, ellipsoid, thin-walled, 

 2 to 4/>t broad and 5.5 to gjj. long, also 3 to 4yu broad and 11 to I2^t long. 



On stones at Alum Rock park near San Jose, and probably occurring in 



