204 GLOSSARY 



Regular (of flowers)— When the petals are all alike. 



Rhizome — A fleshy horizontal underground stem putting up stems 

 from its upper surface {Solomori s-Seat). 



Root-stock — An underground stem. 



Rostellum (in Orchide^)— A projecting lobe of the stigma beneath 

 the anther. 



Rotate (of the corolla)— When the lobes are spread out flat {Prim- 

 rose^ Forget-me-Jioi). 



Runcinate (of leaves) — With large coarse lobes near the base. 



Samara — A winged indehiscent seed-vessel {Sycamore^ Elm). 



Scabrid — Rough and tubercled. 



6"^^/^— The stalk of an inflorescence (usually leafless). 



Scarious — Dry and shrivelled. 



Septum — A division wall within an ovary. 



Sessile (of leaves or anthers) — Without a stalk. 



Setaceous (of leaves) — Very stiff and narrow ; bristle-like. 



Silicula — A short broad siliqua {Shepherd' s-Purse). 



Siliqua — An elongated bilocular capsule, with the ovules attached 



to the margin of the septum {Crucifercs). 

 Spadix — A fleshy spike of unisexual flowers {Arum). 

 Spathe — A large bract enveloping an inflorescence {Arum^ Alliuifi). 

 Spike — An inflorescence composed of sessile flowers arranged on 



an axis {Plantago^ Wheat). 

 Staminode — An imperfect stamen {Borraginece). 

 Stigma — The portion of the pistil which receives the pollen- 

 grains. 

 Stipule — A leaf-like growth at the base of a leaf or leaf-stalk ; 



stipules may be free ( Violet) or adnate to the petiole {Straiv- 



berry). 

 Style — The portion of the pistil intermediate between the ovary 



and the stigma. 

 Stolon — A prostrate branch ending in a tuft of leaves which 



becomes detached and roots itself. 

 Strobile — A catkin-like inflorescence with large bracts {Hop). 

 Superior (of calyx) — Apparently above the ovary ; (of ovary) — 



above the calyx. 



