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OXALIDACE^E. 



Herbaceous plants, shrubs, or trees, remarkable for the 

 quantity of oxalic acid contained in their foliage, on 

 which account some species are used as sauces, salads, 

 or even pickles. Oxalis crendta was a few years back 

 recommended to be extensively cultivated for the sake 

 of its tuberous roots, which, it was said, would form an 

 excellent substitute for the potato. It has, however, 

 proved to be of little value. Some species have sensitive 

 leaves v and a few are used in medicine. 



1. OXALIS (Wood-Sorrel). Sepals 5, united below ; 

 petals 5, often united below ; stamens united by the 

 base of their filaments ; styles 5 ; capsules 5-celled, 

 angular. (Name from the Greek oxys, sharp or acid, from 

 the acidity of the leaves.) 



EXALTS ACETOSELLA (Common Wood-Sorrel). 



1. OXALIS (Wood-Sorrel). 



1. 0. Acetosella (Common Wood-Sorrel). Leaves 

 all springing directly from the root, ternate, hairy ; scape 



