GLOSSARY OF BOTANICAL TERMS. 231 



RAPHE, in seeds, a projecting cord covered by the testa, connect- 

 ing the hilum and chalaza. 



RAPHIDES, crystalline bodies met with in the cells of many plants. 

 RECEPTACLE, the enlarged extremity of the axis bearing the 



flowers. 



RECLINATE, the extremity curved downwards. 

 RECURVED, curved backwards. 

 REFLEXED, bent backwards. 



REGULAR, having all the parts equal and of similar form. 

 RENIFORM, kidney-shaped, broadly cordate at the base, round at 



the apex. 



REPAND, with a sinuous wavy margin. 

 REPENS, creeping. 

 RESUPINATE, twisted so that the under becomes the upper 



surface. 

 RETICULATED, as in the veins of a leaf when they anastomose, 



forming a net. 



RETRORSE, directed back from the point of an organ. 

 RETUSE, blunt at the point, with a shallow notch in the middle. 

 REVOLUTE, margins rolled back as in some leaves. 

 RHIZOME, an underground creeping stem. 

 RHOMBOID, with a somewhat produced angle about the middle 011 



each side, the petiole being attached to one of the acute 



angles. 



RINGENT, a two-lipped, gaping corolla. 

 ROOTSTOCK, a thick short rhizome. 

 ROSACEOUS, flowers having petals with very short claws, as in the 



Roses. 



ROSETTE, leaves arranged in numerous close circles. 

 ROSTRATE, prolonged in the form of a beak. 

 ROTATE, wheel-shaped, a monopetalous corolla with the tube 



scarcely longer than the flat limb. 

 RUDIMENTARY, an organ imperfectly developed. 

 RUGOSE, coarsely wrinkled. 

 RUGULOSE, finely wrinkled. 

 RUMINATED, mottled with foldings and windings as in the Nut- 



mey. 

 RUNCINATE, where the lobes of a widely pinnatifid leaf are directed 



backwards. 

 RUNNER, a shoot lying flat on the ground and rooting at the end. 



SAC, a small bag. Saccate, in the form of a small bag. 



SAGITTATE, arrow-shaped ; furnished with two acute lobes point- 

 ing backwards. 



SALVER-SHAPED, a corolla with the tube longer than the flat limb. 



SAMARA, a fruit with dry membranous wings much prolonged, as 

 in the ash. 



SARCOCARP or MESOCARP, the fleshy part of fruits, or middle layer 

 of the pericarp. 



