114 HERRE 



6. CLADONIA VERTICILLATA Hoffm. 



Cladonia verticillata Hoffmann, Deutsch. Flo. 2: 122. 1796. 

 Cladonia verticillata Wainio, Monog. Clad. Univ. 2: 176. 1894. 

 Cladonia verticillata Fink, The Bryologist, 7: 86. 1904. 

 Cladonia verticillata Herre, Proc. Wash. Acad. Sci. 7 : 390. 1906. 

 Lichen cervicornis Ach. Lich. Suec. Prodr. 184. 1798. 

 Cladonia verticillata cervicornis Floerke, Clad. Comm. 29. 1828. 



Primary thallus leafy, squamules large (sometimes as much as an 

 inch in length) to medium size, somewha.' ascendant, usually clus- 

 tered, rounded or more or less dissected, usually crenate lobulate; 

 color brownish green or sometimes lighter; beneath whitish. 



Podetia rising from the lower margin of the squamules, cylindri- 

 cal, from short to slender and elongated, cup-bearing, usually smooth 

 and without squamules, or here and there roughened or bearing 

 occasional thalhne lobules; sometimes with conspicuous and abun- 

 dant thalline leaflets on the basal joints and on the cups; these 

 marginally denticulate and from 2-5 times proliferous from the 

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

 arise from one cup, or again cups are lacking on the upper ranks or 

 branches; color of podetia gray green to ashy and brownish. 



Apothecia light to dark brown, small or medium sized, on short 

 stalks from the margins of the cups, or sessile. 



On earth and in crevices of rocks, throughout the foothills, and 

 mountains. Of ttimes growing in the dryest situations on the rocky 

 summits of hills where even the chaparral is thin and stunted. 



Our plants belong mostly to the variety cervicornis (Ach.) Flk., 

 in which the podetia are shorter and more slender, and with 

 1-3 ranks; sometimes proliferous from the sides of the podetia below 

 the cups. Occurring in the driest and sunniest places. 



Another cosmopolitan hchen, but usually lacking in arctic regions 

 and rare in the tropics. 



7. CLADONIA CRISPATA (Ach.) Flot. 



Baeomyces turhinatus var. crispatus Ach. Meth. Lich. 341. 1803. 

 Cladonia crispata Flotow, Merkw. Flecht. Hirschb. 4. 1839. 

 Cladonia crispata Wainio, Monog. Clad. Univ. 1 : 379. 1887. 



