GLOSSARY. 



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Short-shoot. — (Spur)., in Coniferse and Gingko ; a greatly- 

 shortened branch in the axil of a scale- or primordial leaf, 

 which bears scale- and foliage-leaves, or the latter only. 



"Singular becoming" — Mechanical causality (Driesch). 



Sorus. — A well-defined group of sporangia or conidia. 



Spathe. — The large, usually coloured, bract of Aroids and 

 some other plants, subtending the spadix. 



Spawn. — The mycelial matrix from which " mushrooms " and 

 edible " toadstools" are grown. 



Spine. — A leaf, part of a leaf, or a shoot or branch which 

 has become radially symmetrical and terminates in a 

 hard prickly point. 



Sporangium. — The spore-containing organ of the sporophyte. 



Sporocarp. — The fruit of the water-ferns (Hydropteridese). 



Sporogenous. — Spore-producing. 



Sporogonium. — The spore-bearing structure of anthithetic 

 conformation resulting from fertilization of the ovum in 

 Bryophytes. 



Sporophyll. — A foliar organ which bears sporangia. 



Sporophyllody. — The change into a sporophyll. 



Sporophyte. — A plant of the asexual generation of Bryophytes 



and vascular plants which produces the spores. 

 Spur-shoot = Short- shoot. 

 Squamiform. — Scale-like. 

 Squamody. — The change into a scale-leaf. 



Stamen. — The "male" sporophyll in flowers, consisting, 

 typically, of a stalk or filament bearing a terminal anther. 

 Staminody. — The change into a stamen. 



Statolith theory. — The view which accounts for the tropic 

 movements of organs by the stimulating influence on the 

 protoplasm of the starch-grains or other contents of the 

 cells. 



Stipe. — The stalk bearing the cap = stem of toadstool. 

 Stipules. — A differentiation of the basal, sheathing portion of 



the leaf, resulting in a lateral leaflet or segment on either 



side. 



Stolon. — A subterranean, horizontally-growing elongated shoot. 

 Subaxillary . — Occurring a short distance outside the axil. 

 Subtending. — Of a leaf in whose axil a branch occurs. 

 Sucker. — A vigorous shoot springing from the stem-base or 

 the root. 



Sympodial. — A type of branching in which the main axis is 

 subsidiary in its development to the lateral branches, 

 each one of which alternately assumes the role of extend- 

 ing the whole shoot- or root-system. 



