Citrine Lemon yellow color. 



Conidium (pi. Conidia) Asexual reproductive .spores of Asco- 

 mycete. 



Continuous Thallus unbroken by gaps or fissures. 



Cortex (pi. Cortices or Corlexes) The compact outermost fun- 

 gal layer of a lichen thallus (Figs. 9. 10). 



Craterous Having a depression resembling the crater of a vol- 

 cano. 



Crenulale Having small rounded lobes. 



Crustose A type of thallus which usually adheres tightly to the 

 substrate and cannot be removed from it without destruction of the 

 thallus: lacks a lower cortex and rhizines (Fig. 10). 



Cusf> (pi. Cusps) Crescent shaped mound. 



Dendritic Having a pattern resembling the branching of a tree 

 limb. 



Dispersed Scattered. 



Endolithic Growing within the rock substrate. 



Epilhecium (pi. Epithecui) Covenng of the hymenium. 



Evufiinate To protrude as if a pocket turned inside-out. 



Excipulum (pi. Excipida) As used here, the inner wall of a 

 peritheciuni. 



Foliose A type of thallus, leatTike or lobed. often with rhizines 

 or hairlike processes on lower surface, usually with lower cortex, 

 algal layer limited to upper side (Fig. 9). 



Frulicose A type of thallus that is shrublike, stalked, or pen- 

 dant with the algal layer usually on all sides. 



Fusiform Narrowed both ways from a swollen middle. 



Glabrous Having a smooth even surface. 



Globose Spherical . 



Holdfast (pi. Holdfasts) The basal portion of an algal thallus 

 attaching it to the substrate. 



Hyaline Colorless. 



Hymenium (pi. Hymeniu) The layer of the ascocarp containing 

 the asci and usually paraphyses (Fig. 9). 



Hypothallus (pi. Hypothalli) A marginal outgrowth of hyphae 

 from the thallus of a crustose lichen (Fig. 10). 



Immersed Sunken mostly or entirely below the surface of the 

 thallus. 



Impressed Indented 



Involucrellum (pi. Involucrella) The usually black and carbo- 



naceous covering of a peritheciuni (Fig 10) 



Isidium (pi. Isidia) Small cylindncal, coralloid, or globose 

 outgrowths of the thallus serving as vegetative dis,seminules. They 

 are covered with cortex and contain both fungal and algal compo- 

 nents (Fig. 9). 



Isthmus (pi. Isthmuses) A narrow passage. 



Jugum (pi. Juga) Protrusions of carbonaceous material extend- 

 ing at least partly above the thallus surface as ridges, pegs, or irreg- 

 ular lumps (Fig. 10). 



Luminal On the flat surface of the thallus (usually upper) (Fig. 

 9). 



Lenticular An area, pointed at each end, inclosed by two inter- 

 secting convex curves. 



Littoral lichen Growing between the tides. The term is 

 extended herein to include those struck by saltwater due to wave 

 action and is u.sed interchangeably with the term "manne." 



Locule (pi. Locules) Chamber or cavity. 



Medulla (pi. Medullae) An area of loosely packed hyphae 

 internal to the thallus and its projections such as podetia, isidia, etc. 

 (Figs. 9, 10). 



Morpholype (pi. Morphotypes) A thallus of a given species 

 having a different appearance than other members of the species. 



Necral Occurring after death. 



Necral reticulation A network of cracks caused by treatment 

 and/or storage after collection. 



Nodular convex Like a small rounded lump. 



Oblong ellipsoid In the form of an elongated circle; more elon- 

 gated than the typical elipse. 



Oblong ovoid In the form of an elongated oval. 



Olivaceous Having a color similar to that of a green olive. 



Orbicular Spherical or nearly so. 



Ostiole (pi, Ostioles) The apical opening of a perithecium (Fig. 

 10). 



Paraphysis (pi. Paraphyses) Sterile hyphae intermingled with 

 asci in the hymenium of an ascocarp (Figs. 9, 10), 



Parasymbiont (pi. Parasymbiunts) An organism living in 

 harmless association with another without mutual benefit. 

 Pendant Dangling. 

 Perithecoid In the shape of a perithecium. 



perithecium 



hypotha 



areol 



ucrell um 



pegs 

 jugum 



ortex 



paraphyses 



•-medul la 



Figure 10, — C'ontpnsiU' crustose lichen vvidi periltiecia. 



