418 GLOSSARY OF TERMS. 



Plane, flat, a level surface 



Piano, used in combination ; as plano-convex, between plane and convex. 



Plicate, folded in longitudinal plaits. 



Poculiform, cup-shaped. 



Polari-nucleate, having nuclei at the ends of a sporidium. 



Pole, the end of a sporidium. 



Polygonal, having many angles. 



Polymorphous, having many forms, where any plant or part of a plant 

 has a diversity of forms. 



Polysporus, having many spores. 



Pore, a minute superficial hole. 



Process, an extension or projection from a surface. 



Produced, where a part is brought forward or lengthened out in any 

 direction. 



Protoplasm, the living contents of a cell, consisting of a combination of 

 albuminous substances with water and small quantities of incom- 

 bustible materials (ash).* 



Pruinose, frosted or covered with bloom like a plum. 



Pseudo-parenchyma, false parenchyma, the cellular tissue of fungi, 

 which, although resembling true parenchyma, is not so. 



Pseudo-septate, having the appearance of being septate. 



Pubescent, coated with elevated extensions of the cellular tissue of the 

 epidermis, assuming the character of minute hairs or -down. 



Pulverulent, dusted over, powdery. 



Pulvinate, cushion-shaped, a little prominence like a cushion. 



Pycnidia, receptacles enclosing stylospores. 



Pyrlforia, pear-shaped. 



Quadrate, square in form. 



Receptacle, the portion of a fungus bearing the hymenium, the apothe- 



cium, the cup. 

 Reniform, kidney-shaped, resembling the section taken longitudinally 



through a kidney. 

 Repand, bowed, having an uneven, slightly sinuous margin. 

 Replicate, doubled down, so that the upper part comes in contact with 



the lower ; folded back, as when the margin of a cup turns out- 

 wards and downwards. 

 Reticulated, forming a network, having veins or lines crossing like 



network. 

 Revolute, rolled backwards, as when the margin of a cup is rolled 



outwards. 

 Rigid, stiff, with slight or no flexibility. 

 Rimose, where a surface is covered with cracks or fissures. 

 Rivulose, marked with lines like the rivers in a map. 

 Rooting, emitting roots, extending the stem downwards into the earth 



or matrix in the form of a root. 



* Sach's " Text-Book," 2nd ed. p. 37. 



