390 



HERRE 



powder, becoming rough and verrucose ; occasionally with 

 thalline squamules ; cups entire or denticulate ; tips of the teeth 

 capped by the very minute dark brown apothecia. 



Collected on an old roof in Mayfield, at an altitude of 35 

 feet. Probably occurring throughout the foothills and moun- 

 tains, on old dead wood. 

 Cladonia -pyxidata tubcefonnis Hoffm. Deutsch. Fl. 2 : 122. 



1791. 



6. CLADONIA VERTICILLATA Hoffm. 



Primary thallus leafy, rounded or more or less dissected, 

 usually crenate-lobulate ; brownish green, whitish beneath. 



Podetia cylindrical, from short to elongated, cup-bearing ; 

 the cups marginally denticulate and 2-5 times proliferous from 

 their center, forming a series of whorls ; sometimes two or more 

 branches arise from one cup. Podetia smooth, but here and 

 there roughened or bearing occasional thalline lobules. Color 

 gray-green to browmish. 



Apothecia light to dark brown, on short stalks from margin 

 of cups, or nearly sessile on margins. 



(Forma ■phyllophora Floerke differs in the much greater de- 

 velopment and elongation of the primary thallus, which may be 

 as much as an inch in length in the larger and frequently leafy 

 cups, and the often conspicuous and abundant thalline leaflets 

 on the podetia, especially on the basal joints. The podetia are 

 also longer and proportionately slenderer.) 



On earth and in crevices of rocks. Found throughout the 

 foothills and mountains. Ofttimes growing in the dryest situa- 

 tions on the rocky summits of hills, where even the chaparral 

 is thin and stunted. 

 Cladonia verticillata Hoffm. Deutsch. Fl. 2 : 122. 1795. 



7. CLADONIA SQUAMOSA (Scop.) Iloftm. 



Primary thallus leafy or squamulose, lobulate or dissected. 



Podetia erect, ca3spitose, i^^ to 31^ inches long, irregularly 

 much-branched, forming matted clumps ; densely clothed to the 

 summit with light green or brown squamules, these often large, 

 leafy and lobulate ; epidermis pale green, disappearing, the sur- 

 face then pale reddish brown ; axils of branches sometimes in- 



