1 86 Glossary. 



Placentation — The mode of arrangement of the placenta and ovules. 



Plumose — Feathery ; a pappus in which the hairs are branched is plumose. 



Polyadelphous — United by the filaments into more than two bundles. 



Polypetalous — With petals not united. 



Polysepalous — With sepals not united. 



Pome — A fleshy many-celled indehiscent fruit with cartilaginous endocarp 

 like the apple. 



Procumbent — Lying on the ground. 



Pubescent — Covered with short soft hairs. 



Raceme — An inflorescence in which the flowers are arranged singly on 

 pedicels along a primary axis. 



Radical — Belonging to the root, growing close to the ground. 



Receptacle — The flattened and expanded end of the peduncle. 



Reflexed — Bent backwards. 



Regular — With sepals (and petals) about the same size and shape. 



Reniform — Kidney-shaped. 



Re volute — With the edges rolled backwards. 



Ringent — With the upper lip arched. 



Rotate — With the regular gamopetalous limb spreading out at right angles 

 to the short tube of the corolla. 



Runcinate — Shaped like a Dandelion leaf, with the divisions pointing 

 backwards. 



Saccate — Forming a sort of bag. 



Sagittate — Arrow-shaped. 



Samara — The winged dry fruit of Elm, Sycamore, etc. 



Scape — A naked flower-stalk. 



Scarious — Scale-like membranous dry and shrivelled. 



Scorpioidal — Coiled up like the tail of a scorpion. 



Septicidal — Dehiscing through the septa so as to resolve the fruit into its 

 component carpels. 



Serrate — With teeth pointing forward like those of a saw. 



Sessile— Without a stalk. 



Setaceous — Bristle - like. 



Sinuous — With a wavy margin. 



Sinus — The recess formed when the edge is lobed. 



Sorus — A cluster of spore-cases. 



Spadix — A succulent spike bearing staminate and pistillate flowers. 



Spathe — A large membranous bract enclosing many flowers. 



Spathulate — Shaped like a daisy leaf. 



