38 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
about 50 to 60 w long and 14 to 20 « thick; spores in 8’s, broadly ellipsoid, 8 to 16 ft 
long, 5 to 8 « thick. 
Frequent and of wide range both as to latitude and altitude. 
On granite, San Gabriel Mountains, and on trap (Topanga Canyon at 160 meters 
altitude, Santa Monica Range); Santa Cruz Mountains near Mansfield at 70 meters and 
Black Mountain at 2,600 meters, Herre; Yosemite Valley at 1,600 meters; Matilija 
Canyon, Ventura County; Santa Catalina Island; San Fermando Valley; San Jacinto 
Mountains at 2,600 meters. North and South America, Africa, Asia, and Europe. 
5. Lecidea hassei Zahlbr. Ann. Mycol. 10: 374. 1912. 
“Thallus crustaceus, uniformis, epilithicus, ad 0.4 mm. crassus, subtartareus, 
effusus, areolato-diffractus, passim verruculoso-inaequalis, lutosocinerascens, opacus, 
KHO—, Ca(ClO)? dilute aurantiacus, in margine bene limitatus, sed linea obscuriore 
non cinctus, ecorticatus; medulla, alba, ex hyphis non amylaceis formata; gonidiis 
pleurococcoideis. 
‘“Apothecia sessilia, dispersa vel conferta, usque 2 mm. lata, e rotundato anguloso- 
irregularia, sinuoso-incisa vel subgyrosa, nigra, primum urceolata, demum subplana; 
disco opaco, epruinoso; margine crassiusculo, bene prominulo, demum leviter depresso, 
nitidulo, ex integro flexuoso; perithecio ex hyphis radiantibus formato, extus nigro, 
intus pallidiore, crassiusculo, KHO—, J violaceocoeruleo; epithecio insperso nigro, 
KHO vix mutato (in fusum vergente), NO,—; hymenio fere decolore, angusto, 45-55 yt 
alto, in hypothecium sensim abeunte, J e coeruleo lutescente; hypothecio crassius- 
culo, subcinnamomeo-cinerascente, KHO rosaceo, ex hyphis dense intricatis, ad 
superficiem disci plus minus perpendicularibus formato, J persistenter violaceo- 
coeruleo; paraphysibus filiformibus, 1.5-1.8 s crassis, conglutinatis, simplicibus, 
eseptatis, ad apicem capitato-clavatis; ascis hymenio subaequilongis, cylindrico- 
clavatis vel oblongo-clavatis, ad rotundatis et membrana modice incrassata cinctis, 
8-sporis; sporis in ascis biserialibus, decoloribus, simplicibus, bacillari-oblongis, ad 
apices rotundatis, membrana tenuissima cinctis, 10-12 # longis et 2-3.5 ys latis, 
“Conceptacula pycnoconidiorum immersa, subglobosa, vertice nigro emergentia; 
fulcris exobasidialibus; pycnoconidiis bacillaribus, utrinque rotundato-retusis, rectis 
(rare suberectis), basidiis longioribus, 6-8 « longis et ad 1 ut latis. 
“Habituell sich der Lecidea auriculata Th. Fr. nihernd, gehért sie dennoch nicht 
in den Formenkreis dieser Spezies; eher wiire sie in der Gruppe der Lecidea sarcogy- 
noides Koerb. einzureihen.”’ 
On sandstone at Ballona Bluffs near Santa Monica and Verdugo Mountains near 
Los Angeles. 
6G. Lecidea diducens Ny]. 
Thallus obsolescent or quite obsolete; identical with ZL. hassei Zahlbr. in the 
varying characters and reactions of the apothecial structures and spores; irregu- 
larities of the proper margin often more marked than in the preceding species; at 
times a spurious thalline margin present, strongly fissured, simulating Lecidea 
einerata Zahlbr. somewhat; in juvenile apothecia the margin coarctate; spores as 
in the last preceding species. 
This is more frequent than ZL, hassei on rocks from lower levels to the summits 
of the higher ranges. Santa Monica Mountains, on trap and sandstone at 250 meters 
and lower; Tehachapi Mountains at 1,600 meters on granite; Del Mar on sandstone 
at 35 meters; Mount Wilson, San Gabriel Range, at 2,000 meters, on granite; in the 
Santa Cruz Mountains at 800 meters and higher, Herre. 
7. Lecidea cinerata Zahlbr. Bull. Torrey Club 27: 644. 1900. 
Thallus absent; apothecia more or less congregated, small, not over 1 mm. wide, 
round, angular, and sinuous, the margin prominent and coarctate; disk concave 
to flat, black, at first lightly pruinose; epithecium yellowish to blackish; thecium 
