Sclerenchyma 



Thick walled cells, fibers or stone cells, constituting 

 strengthening tissue in plants. 



Sclerophyll 



Plants with stiff, leathery, evergreen leaves, may be 

 broad-leaved as the holly, or narrow-leaved as the pine. cf. 

 Chaparral. 



Sclerosis 



The hardening of tissue by an increase in the content of 

 lignin in plants, or an increase in collagen in animals. 



Sclerotium 



A hard, compact, rounded mass of hyphae serving as a 

 dormant stage for carrying a fungus through an unfavorable 

 environmental period; it may survive many winters in the 

 soil. 



Scree 



See Talus. 



Scrub 



Densely growing, low, often stunted bushes or trees, cf. 

 Fruticeta, Bush, Chaparral. 



Searching 



See Random searching. 



Season, Critical 



The part of the year when a species suffers greatest 

 mortality, e.g., the migration time of some migratory birds. 



Seasonal Aspects 



See Aspection. 



Seaweed 



An alga, usually large, growing in the sea, e.g., kelps. 



Sebaceous 



Refers to fatty material, particularly to the gland in the 

 skin of mammals that secretes sebum. 



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