41 



bose, hardly colored. Th. crustaceous or almost obsolete. A ge- 

 nus of few spp. of temperate regions. 



Series II. ANGIOCAEPI. Apotb. globular, opening only by a 

 pore at the summit. 



Tribe V. VEERUCARIACEI. Apoth. globular ; a proper ex- 

 ciple (perithecium) , covering a similarly shaped hymenium, (nu- 

 cleus), which is included in a more or less distinguishable inner 

 envelope, (amphithecium.) 



Fam. 1. Thamnopyeenei. Thallus fruticulose. 



Genus 66. Pyeenothamnia Tuck., Torr. Bulletin, 1883, p. 22. 

 "Apoth. immersed in the th. ; perithecium fuseescent, amphithe- 

 cium colorless, paraphyses diffluent and obsolete. Spores 1-2 or 4 

 in the thekes, muriform, brown, .036-66 mm. long, by .016-24 

 mm. wide. Hymenial gonidia oblong, guttated, .010-24 mm. long, 

 by .003-4 mm. wide. Th. fruticulose, csespitose, about half an inch 

 high, fragile, from a teretish base dilated above, and dichotomously 

 much-branched, the obtuse tips erenate-dentate, the color from 

 cinerascent fuseescent. Hyphifi forming a confused layer." An 

 earth lichen of the Rocky Mountains. 



Fam. 2. Endocakpei. Thallus foliaceous, becoming squamu- 

 lose. 



Genus 67. Endocakpon Hedw., Fr. Apoth. immersed in the 

 thallus ; perithecium much reduced ; amphithecium pale or blacken- 

 ing ; paraphyses obsolete. Spores simple, or 2-4 loc, or rarely 

 muriform, brown or decolorate. Thallus foliaceous, one-leaved, or 

 squamulose, passing also into subcrustaceous states. A small genus 

 of rock and earth Lichens. 



Genus 68. Noemandina Nyl. Apoth. immersed in thalline 

 warts ; perithecium indistinct ; amphithecium black ; paraphyses 

 obsolete. Spores 8 loc, colorless. Th. squamtefprm, one-leaved. 

 A small genus of 2 spp. of temperate regions. 



Fam. 3. Vereucaeiei. Thallus crustaceous. 



Subfam. 1. Segesteiei. Apoth. solitary; perithecium colored. 



Genus 69. Segesteia Fr. Apoth. immersed in thalline warts ; 

 perithecium colored ; amphithecium pale or finally blackening ; para- 

 physes filiform. Spores simple or 2-4-plurilocular, or muriform, 

 without color. Th. now lobulate, mostly uniform. Includes here, 

 with other genera of authors, Thelocarpon, Nyl., in which the spores 



