384 herre: lichen flora 



thecium dark blackish brown to brown; epithecium dark reddish brown; thecium 

 brown, the paraphyses not distinct, coherent, simple, blue with I; asci cylindrical 

 or narrowly clavate; spores ovoid or broadly ellipsoid, 4.9 to 7.5m broad and 9.75 

 to 14.7m long. On damp earth and moist shaly rock in the city of Santa Cruz, 

 at an elevation of about 50 feet. Recorded by Tuckerman from Washington and 

 from British Columbia by Macoun. Reported from most parts of Nprth Amer- 

 ica and Europe, and also from Asia. 



CATILLARIA LAURERI Hepp. Catillaria laueri Hepp in Arn. Exsic. No. 353. 

 1867. Biatora laureri Tuck. Synopsis, 2: 30. 1888. Thallus very thin and 

 scanty, or even disappearing, or at times roughened and contiguous to chinky, 

 scurfy or smooth; effuse, forming small, irregular dusky ashen to ashy white 

 patches; turning brown with KOH. Apothecia rather numerous, minute to small 

 (0.4 to 1 mm. in diameter), the black, slightly roughened disk at first plane, but 

 soon convex and swollen, when the thin entire margin disappears and the fruit is 

 lecideine; epithecium thick, granulose, blackish or black violet; thecium pale 

 or colorless; with a violaceous-reddish cast, becoming deep blue with I; hypo- 

 thecium dusky, dusky reddish, and nearly clear, but when seen in thick sections 

 it is of a dull greenish color; paraphyses thread-like, more or less capitate and 

 dusky tipped, free, somewhat lax and twining; asci clavate, blue with I; spores 

 bilocular, fusiform-ellipsoid, 3 to 5m broad and 8.7 to 16m long. Collected but 

 once by me, on dead twigs along the sea coast near Pigeon Point. A bark lichen 

 of Northern and Central Europe, reported by Tuckerman from New England, 

 New York, California, Oregon, Alaska, and Canada. 



THELOCARPON ALBO-MARGINATUM Herre, new species. Thallus com- 

 posed of very small to minute (0.1 to 0.3 mm. in diameter), more or less circular and 

 rather thick but flattened thalline warts, which lie rather thinly scattered over the 

 substratum, or occasionally are grouped into small clusters; color a dark chestnut 

 brown, with a distinct white margin surrounding each areole. One apothecium 

 in each areole, its presence indicated by a minute pore; asci flask shaped; para- 

 physes free, thread-like, and more or less twining, not septate and rarely forked 

 near the apex; thecium blue with I; spores very numerous, ellipsoid, 1 to 1.5m 

 broad, 2.5 to 4m long. On a loose rock lying on earth near the summit of the west 

 wall of Devil's Canon, elevation about 2400 feet. Externally the plant much 

 resembles a degenerate Acarospora and is very likely to be passed over as such. 



ZAHLBRUCKNERELLA Herre. Zahlbrucknera Herre, Proc. Wash. Acad. Sci. 

 12: 129. 1910, not Reicheub. 1832. As the name of Zahlbrucknera had already 

 been applied to a genus of flowering plants, my use of the name was untenable; 

 I therefore make the modification given above. 



COLLEMA CRISPUM (Huds.) Hoffm. Lichen crispus Hudson, Fl. Ang. 447. 

 1762. Collema crispum Hoffm. Deutsch. FL, 2: 101. 1795. Thallus small, 

 effuse, forming close or scattered greenish black or brownish black clumps. 6 to 

 20 mm. in diameter; the minute lobes outspread and flattish, or usually more or 

 less erect and crowded, with crisped and intricate or dentate-granulate margins. 

 Apothecia small to medium, 0.5 to 2 mm. in diameter, with concave reddish-black 

 disk, which at last may become plane; margin thick, sub-entire or granulate; 

 spores oblong ellipsoid, four-locular, colorless or faintly brown, measuring 7.3 

 to 11. 7« in breadth by 17.5 to 29m in length; said to become more or less muriform, 

 tho not so in our scanty specimens. Rare; on sandstone at Castle Rock, altitude 



