GLOSSARY. 447 



Sinus. A large, rounded indentation or cavity. 



Sori. Plural of Sorus. The most common fruit of ferns, con- 

 sisting of small clusters of minute capsules on the back of 

 the leaf. 



Sorosis. A spike or raceme converted into a fleshy mass, as in 

 the Mulberry. 



Spadix. An elongated receptacle of flowers, commonly proceed- 

 ing from a spathe ; as in Arum triphyllum. Med. Bot. PI. 4. 



Spathe. A sheathing calyx opening lengthwise on one side, and 

 consisting of one or more valves. See Spadix. 



Spatulate, or spathulate. Obtuse or large at the end, and gradu- 

 ally tapering into a stalk at base ; as in the leaves of Siactice 

 Caroliniana. Med. Bot. PI. 25. 



Species. A group or subdivision of plants agreeing Avith each 

 other not only in their fructification, but in all other essen- 

 tial and permanent parts ; and always reproducing the same 

 kind. 



Specific. Belonging to a species only. 



Sphalcrocarpivm. A one seeded, indehiscent pericarp enclosed 

 within a fleshy perianth, as in Taxus. 



Spike. A kind of inflorescence in which the flowers are sessile 

 or nearly so on the sides of a long peduncle. 



Spikelet. A small spike. 



Spindle shaped. See Fusiform. 



Spine. A thorn, or sharp process growing from the wood. 



Spores, or sporules. The substances produced by cryptogamous 

 plants answering to seeds. 



Spur. A sharp hollow projection from a flower, commonly the 

 nectary. 



Squamiform. Scale shaped. 



Squarrose or Squarrous. Ragged. Having reflected or divergent 

 scales. 



Stamen. The part of the flower on which the Linnsean classes 

 are founded. It commonly consists of the _^Zamenf or stalk, 

 and the anther which contains the pollen. 



Staminate. Having stamens, but no pistils. 



Staniinoids. Bodies resembling stamens. 



Standard. See Banner. 



Stellate. Like a star. 



