096 GLOSSARY. 



Quincunx, disposed in squares, with one at each corner and a fifth 

 in the middle. 



Racemous, growing in clusters. 



Rachis, the stem. 



Radiated, sending forth rays from a centre. 



Ramous, branched. 



Reniform, kidney-shaped. 



Reticulated, formed like net-work. 



Retractile, capable of being drawn backwards. 



Revolute, rolled outward and backward. 



Rhomboidal, like a rhomb, a quadrangular figure with two angles 



acute and two obtuse. 

 Rugose, wrinkled. 



Saccate, in the form of a bag. 



Scutiform, having the shape of a shield. 



Secund, when the branchlets are on one side. 



Semi, in composition signifies half. 



Sericeous, silky. 



Serrate, toothed or notched. 



Sessile, attached without a peduncle or stem. 



Setaceous, bristly. 



Sinistral, left. 



Sinuated, having curved breaks in the margin like bays. 



Sinus, a depression. 



Siphon, a cylindrical tube. 



