l88 HERRE 



more or less developed; paraphyses simple, not twining; asci with 8 

 spores, rarely with i6 or 32; spores colorless, elongate or ellipsoid, 

 straight or curved, 2- multilocular, thin-walled; spermatia exoba- 

 sidial. 



About 50 species, removed from Lecanora by the spores and the 

 structure of the spermogonia. 



KEY TO THE SPECIES. 



A . Thallus of discrete squamules or warts; reddish or red brown. 



I. dudleyi 

 A A. Thallus more or less continuous. 



B. ThaUus areolate, pale to tawny brown and blackening. 



2. brunonis 



BB. Thallus thin or very thin, not areolate; brownish ash-colored to 



white 3. dimera 



I. LECANIA DUDLEYI Herre, new species. 



Thallus effuse, of thick, irregular, closely appressed scales, which 

 vary in shape from crenate flattened squamules to rounded or sub- 

 globose warts, or diff orm, warty clumps ; always rather sparsely dis- 

 tributed, never forming a uniform crust; color pale to very dark red- 

 dish or red-brown; a black hypothallus more or less evident; beneath 

 pale yellowish; KOH— ; CaCl202 — . 



Apothecia of medium size, from plane soon becoming elevated, 

 protuberant, and sub-globose, the thin, entire thalline margin 

 excluded; the disk red-brown or reddish black, finally black granu- 

 lose; epithecium reddish or reddish-brownish; paraphyses not very 

 slender, jointed, very pale brownish; thecium deep blue or violet 



with I; spores bilocular, elHpsoid or ovoid, — ^ ^ [J- 



On rocks and clay above the sea at Point Lobos, San Francisco. 

 A unique species unhke anything in any of the collections I have 



examined. 



{dudleyi, named for Prof. William Russell Dudley, professor of sys- 

 tematic botany at Leland Stanford Junior University.) 



2. LECANIA BRUNONIS (Tuck.) Herre. 



Lecanora hrunonis Tuck. Gen. Lich. 116. 1872. 



Lecanora hrunonis Tuck. Syn. N. Am. Lich. I: 193. 1882. 



