396 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. 
Rentform, kidney-shaped. 
Reticulated, formed like net-work. 
etractile, capable of being drawn backwards. 
Revolute, rolled outward and backward. 
fthomboidal, 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. 
Stnus, a depression. 
Stphon, a cylindrical tube. 
