Revolute Segments 

 of Perianth. 



A Ringent Corolla. 

 Salvia. 



Rhizome or Root- 

 stock. 



Rotate Flower. 

 Potato Blossom. 



Sagittate Leaf. 



Leaf with Sinuate 

 Margin. 



RADICAL : Pertaining to the root, or apparently coming 

 from the root. 



RADICLE : The first root of a plant in the embryo. 



RAY : A marginal floret of a compound flower ; as in 

 the Aster, Sunflower, &c. ; the branch of an umbel. 



RECEPTACLE : Head of a flower-stalk from which the or- 

 gans of a flower grow or into which they are inserted. 



RKFLEXED : Bent outwards or backward. 



REVOLUTE : Rolled backward. 



RINGENT : Grinning, gaping open. 



RIB : One of the principal pieces of the framework of 

 a leaf. 



ROOTLETS : Little roots or root-branches. 



RooTSTOCK : Root-like stem under ground ; an under- 

 ground stem. 



ROTATE : Wheel-shaped ; a monopetalous corolla, ex- 

 panding into a flattish border, with scarcely any tube. 



RUGOSE : Wrinkled, roughened with wrinkles. 



SAGITTATE : Arrow-shaped. 



SCABROUS : Rough to the touch. 



SCANDENT : Climbing. 



SCAPE : A peduncle or flower-stalk rising from the crown 

 of a root. 



SEPAL : A single part or division of the calyx. 



SERRATE : Toothed, like a saw ; having the margin cut 

 into teeth pointing forward. 



SERRULATE : Same as " serrate," but with fine teeth. 



SESSILE : Sitting ; without a stalk ; as a leaf without a 

 petiole, or anther without a filament. 



SlLICLE : A short and broad pod of the Cress family. 



SlLlQUE : A long pod peculiar to the Cress family. 



SINUATE : Strongly wavy. 



SPADIX : A fleshy spike of flowers. 



SPATHE : A sheathing bract which envelopes a spadix. 



SPICATE : Pertaining to or resembling a spike. 



SPIKE : A flower-cluster in which the flowers are sessile 

 on the axis or rachis, as in the Mullein. 



SPINE : A thorn. 



SPINDLE-SHAPED : Tapering to each end like a Radish. 



SPINOSE : Thorny. 



STAMEN : One of the essential organs of a flower, which 

 secretes and furnishes the pollen or fertilizing dust ; it 

 consists of two parts, the anther and the filament. 



STAMINATE : Furnished with stamens. 



STELLATE : Starry ; arranged in rays like those of a star. 



Calla Spathe, en 

 closing Spadix. 



Spike of Gladiolus. 



44 



Spines. 



A Scape. Tulip. 



Trillium. S, sepals 



Sessile Leaves. 



Silique of Mustard. 



Stamen. 



