418 GLOSSARY OF TERMS. 
Plane, flat, a level surface 
Plano, used in combination ; as plano-convex, between plane a.nd 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 
buminous 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 duwn. 
Pulverulent, dusted over, powdery. 
Pulvinate, cushion-shaped, a little prominence like a cushion. 
Pycnidia, receptacles enclosing stylospores. 
Pyriform, 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. * th Se Ang eee 
Revolute, rolled backwards, as when the margin of a cup ia xolled 
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. 
