GLOSSARY OF TERMS. 417 



Navicular, boat-shaped ; a synonym of Cymbiform. 

 Nigrescent, approaching a black colour. 

 Nigricant, black. 



Nigro-punctate, marked with black points or dots. 

 Nucleate, having nuclei. 



Nucleus, a homogeneous, roundish protoplasm -mass produced by the 

 differentiation of the protoplasm of the cell.* See Guttulate. 



Obconic, conical, but having the apex downwards. 



Oblique, deviating from a right line, aslant. 



Oblong, a rectangle, which is longer than it is broad, but used here of 



sporidia which somewhat approach this form while rounded at 



the ends. 

 Obtuse, blunt. 



Ocliery, the colour of ochre ; synonym for Ochraceous. 

 Ochraceoas, Ochraceus. See Ocliery. 

 Olivaceous, of an olive-green colour, orange and grey. 

 Olive. See Olivaceous. 

 Opaque, not transparent, not shining. 

 Operculum, a cover or lid; applied to the membrane which is raised 



for the exit of the sporidia. Seen best in Ascobolus. 

 Orange, the colour of an orange ; synonym of Aurantius. 

 Orbicular, of a round form, circular. 

 Ovate, shaped like an egg, somewhat broader at the base than the 



summit. 

 Ovoid, synonym for Ovate. 



Pallid, pale, but undecided in colour. 



Papilla, a nipple-like protuberance, often consisting of a single cell. 



Papillate, covered with papillse, or ending in a papilla. 



Paraphyses, minute hyaline filaments surrounding the asci. 



Parenchyma, the cellular tissue forming the interior of the receptacle. 



See Pseudo-parenchyma. 

 Patellate, Patelliform, shaped like a dish. 

 Pellucid, transparent, not opaque. 

 Peltate, formed like a pelta or shield, a shield supported in the middle 



on the point of a projecting body. 

 Perithecium, a closed receptacle containing the hymenium, as in the 



genus Sphceria, being at length perforated by a pore at the 



summit. 

 Persistent, enduring, remaining beyond the period of maturity, not 



soon decaying. 

 Pileate, furnished with a cap, having a more or less enlarged head. 

 Pilose, hairy. 

 J-'lacentiform, a thickened circular disc, depressed in the middle both 



above and below. 



* Sach's "Text-Book of Bot.," 2nd ed. pp. 2, 38, 44. 



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