558 



GLOSSARY OF SPECIAL TERMS. 



Pollen. Pollen-grain. See Micro- 

 spore. 



Pollinia. The pollen-masses of the 

 Orchid and Milkweed Families. 



Polygamous. Bearing both perfect 

 and imperfect flowers. 



Polypetalous. With separate petals. 



Polysiphonous. Consisting of bundles 

 of parallel cells. 



Polysporangium. A sporangium con- 

 taining many spores. 



Pome. The fleshy fruit of the Apple 

 Family, 



Procarp. The female reproductive 

 organ of the Red Algae. 



Procumbent. Trailing or lying on 

 the ground. 



Proliferous. Producing ofi'shoots. 



Prophylla. Bractlets. 



Prothallium. The sexual generation 

 of Pteridophyta. 



Proximal. Pertaining to the inner or 

 basal part, or the part near the 

 point of attachment. 



Pseudoparenchyma. A compact tis- 

 sue, in Fungi and Algae, formed 

 by closely interlaced or united fila- 

 ments. 



Puherulent. With very short hairs. 



Pubescent. With hairs. 



Punctate. With translucent dots or 

 pits. 



Pungent. With a sharp stiff tip. 



Pyriform. Pear-shaped. 



Eaceme. An elongated determinate 

 flower-cluster with each flower pedi- 

 celled. 



Bacemose. In racemes, or resembling 

 a raceme. 



Eachilla. The axis of the spikelet in 



Bachis. The axis of a compound leaf, 

 or of a spike or raceme. 



Badiant. With the marginal flowers 

 enlarged and ray-like. 



Eadiate. With ray-flowers; radiat- 

 ing. 



Eadicle. The rudimentary stem of 

 the embryo; hypocotyl. 



Badicular. Pertaining to the radicle 

 or hypocotyl. 



Eamulose. Having many small 

 branches. 



Eamulus. A little branch or a 

 branchlet of the ultimate order. 



Eaphe (EJiapJie). The ridge connect- 

 ing the hilum and chalaza of an 

 anatropous or amphitropous ovule; 



the ridge on the sporocarp of Mar- 

 silea. 



Bay. One of the peduncles or 

 branches of an umbel; the flat 

 marginal flowers in Compositae. 



Beceptacle. The end of the flower 

 stalk, bearing the floral organs; or, 

 in Compositae, bearing the flowers; 

 also, in some ferns, an axis bearing 

 sporanges. 



Eecurved. Curved backward. 



Beflexed. Bent backward abruptly. 



Begular. Having the members of 

 each part alike in size and shape. 



Beniform. Kidney-shaped. 



Bepand. With a somewhat wavy mar- 

 gin. 



Beticulate. Arranged as a network. 



Betrorse. Turned backward or down- 

 ward. 



Betuse. With a shallow notch at the 

 end. 



Bevolute. Rolled backward. 



Bhachis. See Bachis. 



BMzoid. A root-like filament in the 

 lower plants. 



Bhisome. See Bootstocl\ 



BootstocJc. A subterranean stem, or 

 part of one. 



Bingent. The gaping mouth of a 

 two-lipped corolla. 



Bostellum. Beak of the style in Or- 

 chids. 



Bostrate. With a beak. 



Bosulate. Like a rosette. 



Botate. With a flat round corolla- 

 limb. 



Bugose. Wrinkled. 



Buncinate. Sharply pinnatifid, or in- 

 cised, the lobes or segments turned 

 backward. 



Sac. A pouch, especially the cavities 

 of anthers. 



Saccate. With a pouch or sac. 



Sagittate. Like an arrow-head, with 

 the lobes turned downward. 



Samara. A simple indehiscent winged 

 fruit. 



Saprophyte. A plant which grows on 

 dead organic matter. 



Scahrous. Rough. 



Scale. A minute, rudimentary or ves- 

 tigial leaf. 



Scape. A leafless or nearly leafless 

 stem or peduncle, arising from a 

 subterranean part of a plant, bear- 

 ing a flower or flower-cluster. 



