IIO HERRE 



mules and on the lower half finally leafy lobules similar in form and 

 color to those of the primary thallus; the whitish ground color usually 

 but little evident; with KOH more or less yellow. 



Apothecia terminal, scarlet; in the field or in freshly gathered 

 material turning black when wet; small to medium, irregular, more 

 or less confluent; spores irregularly arranged in the asci. 



On stumps, old logs, and living trunks of Sequoia sempervirens and 

 Pseudotsuga taxifolia. A common and handsome Cladonia. 



Part of our material is referred by Prof. Fink to Cladonia bacil- 

 laris, as the spores are obliquely arranged in the asci; however I am 

 as yet not able to distinguish more than the one species. Cladonia 

 macilenta is probably generally distributed over North America and 

 is reported from all the continents. But Dr. Wainio states that 

 many authors have not distinguished it from Cladonia bacillaris Nyl. 



2. CLADONIA FLABELLIFORMIS (Flk.) Wainio. 



CapUularia flabelliformis Floerke, Beschr. Rothfr. Becherfl. 216. 



1808. 



Cladonia flabelliformis Wainio, Monog. Clad. Univ. 1: 112. 1887. 

 Cladonia macilenta Herre, Proc. W. Acad. Sci. 7 : 391 : 1906, in part. 



Primary thallus of small or medium sized, crenate-lobate or irregu- 

 larly dissected and lobate, brownish or pale green squamules; scat- 

 tered or compacted into a dense, leafy crust; white beneath. 



Podetia rising from the surface of the squamules, short or of mode- 

 rate length, usually rather slender, entire or sparingly branched, the 

 surface mostly densely sorediate, granulose, or the granules passing 

 into minute squamules; cylindrical, becoming dilated above and 

 forming small, shallow, entire or perforated cups; these with dentate 

 or lacerate and irregular margins which are often proliferous; the 

 branches likewise dilated apically, or slender and awl-like. 



Apothecia scarlet, small to medium, solitary, becoming confluent, 

 on short stalks from the margins of the cups or crowning the tips of 

 the proliferous branches. 



Rare; on a stump of Sequoia sempervirens on the Bear Gulch road, 

 at an altitude of about 1000 feet. Given by Wainio in his list of cos- 

 mopolitan species, though not yet known to occur in Asia. 



