EXPLANATION OF SCIENTIFIC TERMS. 305 



Saccharine, sugary. 



Saline, salt. 



Secondary, the first division of a primary branch. 



Secund, arranged on one side only of a stem. 



Segment, a division of a flat frond. 



Serrate, saw-edged. 



Sessile, without a stalk. 



Seta, a bristle. 



Setaceous, bristly, of the diameter of a bristle. 



Sinuate, more or less deeply cut. 



Sinuous, with a waved margin. 



Siphon, a tube. 



Sorus, a group of spores or tetraspores. 



Specific, appertaining to species. 



Spherical, concave or globular. 



Spheroidal, like an oblong sphere. 



Sporaceous nucleus, a spore-like cluster. 



Sporangium, a case containing a spore or spores. 



Spore, the equivalent in Cryptogamic plants of a seed in 



flowering plants. 

 Sporidium, a pseudo-spore. 

 Sporiferous nucleus, a cluster of spores. 

 Sporophyllum, a leaflet bearing spores or tetraspores. 

 Sporule, a small spore. 

 Squarrose, spreading at right angles. 

 Stichidium, a pod-like vessel containing tetraspores. 

 Stratum, a layer. 

 Stria, a line, flute, or stripe. 

 Striate, striped or fluted. 

 Subcordate, somewhat heart-shaped. 

 Subdichotomous, somewhat forkedly divided. 

 Subgh'bular, somewhat globular. 

 Submcniliform, slightly necklace-like. 

 Subsimple, very slightly branched. 

 Subsolitary, nearly solitary. 



