304 BRITISH SEA-WEEDS. 



Finnatifid, divided into lobes from the margin nearly to the 



midrib. 

 Finnule, a secondary branchlet or leaflet. 

 Pistil, the body in the centre of a flower which contains the 



ovary, styles, and stigma. 

 Placenta, that part of the capsule to which the spores or 



spore-threads are attached. 

 Plumulate, 1 f^^^^^^^^^ 

 Plumose, J 



Plumule, a feather-like branchlet. 



Pollen, the fertilizing powder contained in the cells of flower- 

 ing plants. 

 Poh/siphonous, many-tubed. 

 Pore, a minute opening in the cuticle. 

 Primary, of the first series. 

 Process, a prominence, protrusion, or small lobe. 

 Procumbent, spread on the ground, but not striking root. 

 Produced, lengthened. 

 Proliferous, producing leaflets or shoots from the tip or 



margin. 

 Punctate, dotted. 



Pyramidal, formed like a pyramid. 

 Pyriform, pear-shaped. 



Quadrifarious, arranged in four or more rows. 



Hacemose, having several conceptacles along a branchlet. 



Pamellus, the ultimate division of a branch. 



Samus, a principal branch. 



Romulus, a secondary branch. 



Seceptacle, the vessel whi<;h contains the spores in the Olive 

 series. 



Mectangular, right-angled. 



Pecurved, 



Pefleaced, 



Beticulate, having a net-like structure or marking. 



Migid, stiff. 



' Y bent downwards. 



