ill APPENDIX. 



Sinus. An indentation, either angular or rounded, separat- 

 ing parts. 



Sordid. Kusty or dirty-colored. 



Sorus, Sori. A cluster of sporangia. 



Spadix. A spike with a thickened, fleshy rachis, usually 

 subtended by a spathe. 



Spathe. A sheathing bract. 



Spvthulate. Narrowly attenuate downward from an ab- 

 ruptly rounded summit. 



Spicate. Like a spike. 



Spike. Resembling a raceme, but the flowers sessile, or 

 nearly so. 



Spinescent. Ending in a spine or spiny point. 



Spinulose. Having diminutive spines. 



Sporangia. Cases which contain spores. 



Spores. The minute bodies in cryptogams, which answer 

 somewhat to the seeds of other plants. 



Squamose. Furnished with scales. 



Squarrose. Irregularly spreading. 



Stipitate. Borne upon a stipe. 



Stipule. An appendage to the base of a petiole. 



Stamen. The male organ of flowering plants, consisting 

 of an anther borne usually upon a filament and containing 

 the pollen. 



Staminodia. A sterile or undeveloped stamen. 



Strobilaceous. Inflorescence formed of imbricated scales, 

 as in the Coniferae. 



Subulate. Awl-shaped. 



Suffrutescent. Slightly shrubby; woody at base. 



Sulcate. Grooved or furrowed. 



Suture. A line of union. 



Syiiandrce. Having united anthers. 



Syncarpous. Having united carpidia. 



Syngenesia. United anthers. 



Tendril. A thread-like production in climbers. 

 Terete. Cylindrical, or nearly so. 

 Ttrnate. In threes. 



