XX GLOSSARY. 



Pome ; a compound fleshy many-seeded fruit, an apple or fruit 



resembling it. 

 Pores ; small, often roundish, holes. 

 Porrect ; extending forwards. 



Posterior ; the part of the flower nearest to the axis. 

 Prickles ; hardened epidermal appendages resembling thorns, but 



not woody. 

 Primordial; the first flower of inflorescence. 

 Procumbent, prostrate ; lying on the ground. 

 Prolonged ; drawn out into a long point, like acuminate, but 



with no hollowing at the sides. 

 Pubescence ; closely adpressed down. 

 Pubescent ; with pubescence. 

 Pulverulent ; covered with fine powdery matter. 

 Punctate ; having minute spots like pin-holes, real or apparent. 

 Pyramidal ; nearly in the shape of a pyramid. 

 Pyriform; pear-shaped. 



Quadrate ; squarish. 



Raceme ; a spike with stalked flowers : hence 



Racemose ; flowering in a raceme. 



Rachis ; the central stem of some kinds of inflorescence ; as the 



stalk common to several spikelets of Grasses ; the stalk of 



the frond of Ferns above the lowest pinnae. 

 Radiate fioxvevs ; those at the margin of a head or other inflo- 

 rescence which are long and spreading like rays. 

 Radical; springing from just above the root. 

 Radicle ; the end of the embryo from which the root grows ; 



also small roots. 

 Raphides ; minute needle-shaped crystals found in the cells of 



some plants. 

 Rays (see Radiant) ; parts diverging in a circle from a central 



poiat. 

 Receptacle; the dilated top of the stalk bearing the flowers 



in Composites; the common support of the parts of a 



flower. 

 Reelinate and reclining ; curved downwards. 

 Recurved; bent moderately backwards. 

 Reflexed ; bent considerably backwards. 

 Reniform ; transversely oval, but broadly cordate at the base, 

 Repand ; with a rather wavy margin . 

 Reticulate ; forming a network. 

 Retrorse ; directed from the point of an organ. 

 Retuse ; abruptly blunt with a notch in the middle. 

 Revolute ; rolled back, as towards the underside of a leaf. 

 Rhizomatous ; having rhizomes. 



