14 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Dr. A. Zahlbruckner writes: ‘‘Von den tibrigen Mycoporellum Arten mit zwei- 
zelligen, farblosen Sporen durch die grosse Zahl der Miindungen des Apotheciums 
(15-18) unterschieden, ausserdem von M. lahmii durch kleinere Sporen und von M. 
ellipticum durch die nicht zylindrischen Sporen abweichend; am nachsten kommt sie 
noch der M. eschweileri, doch diese hat nur wenig Osteola.”’ 
Type locality, Santa Catalina Island near Avalon, on Crossosoma californicum. 
Type deposited with Dr. A. Zahlbruckner; duplicate in herb, Hasse. 
Order GYMNOCARPEAE. 
Disk round or narrowed and lengthened (lirellaeform), more or less exposed, not 
covered by the margin (exciple), covered, however, by the prolonged and densely 
interwoven paraphyses forming a “capillitium,’’ these becoming intermingled with 
the soon liberated spores, forming the so-called “mazedium.”’ 
KEY TO SUBORDERS. 
Paraphyses and spores forming a mazedium........... CONIOCARPINEAE (p. 14). 
Paraphyses and spores not forming a mazeedium. 
Disk linear to elongate and ellipsoid .............. GRAPHIDINEAE (p. 16). 
Disk circular...........-.2------- eee eee ee ee eee CYCLOCARPINEAE (p. 29). 
Suborder CONIOCARPINEAE. 
Thallus partaking of the cardinal forms, foliaceous, crustaceous or fruticulose; 
symbionts Pleurococcus, Protococcus, Stichococcus, or Chroolepus gonidia; disk 
exposed, roundish or elongate; asci cylindric, soon disintegrating and forming a 
mazedium with the liberated spores. 
KEY TO FAMILIES. 
Apothecia stipitate.............-. 22.2 ee eee eee eee CALICIACEAE (p. 14). 
Apothecia sessile.........-... 222-22 e eee ee eee eee eee CYPHELIACEAE (p. 15), 
CALICIACEAE. 
Thallus thinly crustaceous, granulose or wanting; gonidia as above, excluding 
Chroolepus; apothecia stipitate or sessile, with more or less globose heads. 
KEY TO GENERA. 
Apothecia not stipitate, sessile or subsessile.............--..-- SPHINCTRINA (p. 15). 
Apothecia stipitate. 
Disk open.........-----2----- 22222 ee eee eee eee eee Caicrum (p. 14). 
Disk inclosed, punctiform.......... cece eee e cece eeeeee STENOCYBE (p. 15). 
CALICIUM Pers. 
Thallus crustaceous, granular to warty; apothecia stipitate, the disk open. 
KEY TO SPECIES. 
Thallus granulose, greenish yellow, effuse............... eeeee 1. C. hyperellum. 
Thallus macular or absent, if present grayish. .............. 2. C. parietinum, 
1. Calicium hyperellum Ach. 
Thallus greenish yellcw, granular or leprose; apothecia on black stipes, the heads 
globose-lenticular, beneath brownish; spores 8, blackish, ellipsoid, bilocular, one 
loculus generally narrowed, 11 to 16 » long, 5 to 8 » thick, becoming dark brown with 
maturity; paraphyses free, some forked above; asci clavate or tubular, 40 » long, 
