ihr 



Rhi- 



;.„,. ^ 



Figure 7. — N'erlical distribution of Verrucaria mucosa. 



Figure 8. — \ertical distribution of Verrucaria striatula. 



tide is given in meters. Due to the great vanation in the distance 

 between mean low tide and mean high tide (ca. 1 to 10 m). the dis- 

 tance below high tide is given in hours of submergence. Each inter- 

 val on the X-axis represents 10% of the total collections of that 

 species by the author In each figure the graph on the right repre- 

 sents the vertical distnbution on exposed shores and the graph on 

 the left represents the vertical distribution on sheltered shores. 



GLOSSARY 



The use of lichenological terminology in this publication has 

 been reduced to a minimum. Several terms are illustrated as well as 

 defined. 



Apical At the tip or apex (Fig. 9). 



Apiillifciiiiii (pi. Apoihc'ciii) Disc, saucer, or cup shaped faiit- 

 ing body (Fig. 9). 



Areolaie Broken by clefts into small, usually angular and irreg- 

 ular patches (areoles). 



AivdIc (pi. Areoles) Area of a thallus divided from the rest of 

 the thallus by fissures (Fig. 10). 



Arete (pi. Aretes) Sharp peak elevated above a ridge. 



Ascocarp (pi. Ascoccirps) An Ascomycete fruiting body giving 

 nse to and containing asci and ascospores (Figs. 9. 10). 



Asiiis (pi. -4.VC7) A sack-like stmcture within which ascospores 

 are formed and contained in the ascocarp (Fig. 10). 



Carhniuueoiis Made up largely of carbon deposits. 



lamina! soredia 



-phycobiont 

 medul la 



thall ine 

 ma rg i n 



upper cortex 



lower cortex 



paraphyses- 



hymenium 



Figure 9.— Composite foliose lichen vwth apotlu'cia. 



