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BOTANICAL TERMINOLOGY. 



Revolute. Rolled backwards. 



Rhizome. A horizontal subterranean 

 stem. 



Rhomboidal. Oval, but somewhat 

 angular at the middle. 



Ribbed. Where the midrib of a leaf 

 sends off marked lateral ones. 



Rigid. Stiff; inflexible. 



Rimose. Full of chinks or clefts. 



Ringent. Grinning; applied to a 

 form of labiate flowers. 



Root. The descending axis of a plant. 



Rootlet. A secondary root or fibre. 



Rosaceous. Having a corolla like a 

 rose. 



Rostrate. Beaked. 



Rostellate. With a small beak. 



Rotate. Wheel-shaped. 



Rugged. Covered with small asperi- 

 ties. 



Rugose. Wrinkled ; having small 

 folds or elevations. 



Ruminated. When the albumen has 

 a wrinkled or folded appearance. 



Runcinated. Pinnatifid, with the divi- 

 sions pointing backwards. 



Runner. A shoot producing leaves 

 and roots at the end. 



Saccate. Having or resembling a 

 small sac. 



Sagittate. Arrow-headed. 



Salver -shaped. A monopetalous co- 

 rolla, with a flat spreading limb. 



Samara. An indehiscent, winged 

 pericarp. 



Sap. The watery fluid absorbed by 

 the spongioles of a plant, and afford- 

 ing it nourishment. 



Sapwood. Alburnum ; the outer layer. 



Sarcocarp. The fleshy or pulpy coat 

 of a pericarp, between the epicarp 

 and exocarp. 



Sarmentose. A running shoot, root- 

 ing at its joints. 



Scabrous. Rough. 



Scales. Thin membranous processes, 

 attached to the cuticle, &c. 



Scape. A radical peduncle, or flower 

 stem. 



Scarious. Dry and membranous. 



Scorpoid. A unilateral raceme, 

 which is revolute before expansion. 



Scrobiculate. Pitted. 



Secund. Turned to one side ; one- 

 sided. 



Secimdine. The second coat of the 

 ovule. 



Seed. The matured result of fecun- 

 dation, and designed to reproduce 

 the species. 



Segments. The parts into which a 

 corolla, calyx, &c, are divided. 



Sepals. The leaves of a calyx. 



Septicidal. When a pericarp opens 

 by the opening of the ventral su- 

 tures, and a division of the dissepi- 

 ments. 



Septifragal. When the dissepiments 

 remain attached to the axis, sepa- 

 rated from the valves, as in the 

 loculicidal dehiscence. 



Septum. A partition. 



Sericeous. Silky ; covered with soft 

 short hairs. 



Serrate. Having teeth like those of 

 a saw. 



Serrulate, When serrate teeth are 

 again serrated ; it also means finely 

 serrate. 



Sessile. Where any organ is destitute 

 of a stalk or support. 



Seta. A bristle. 



Setose. Bristly ; having bristles or 

 stiff hair. 



Sheath. The prolongation of a leaf, 

 bract, &c, down a stem, so as to 

 enclose it. 



Sheathing'. Surrounding by a convo- 

 lute base.* 



Shield-shaped. Shaped like an ancient 

 shield. 



Shrub. A small plant with a woody 

 stem. 



Sickle-formed. Much curved, with 

 sharp edge. 



Silicle. The pod of a plant of the 

 order Siliculosa. 



Siliculosa. An order of Tetradyna- 

 mia, having pods almost as broad 

 as long. 



Silique. The pod of a plant of the 

 order Siliquosa. 



Siliquosa. An order of Tetradyna- 

 mia, having the pods much longer 

 than broad. 



Silky. Covered with shining ap- 

 pressed hairs. 



