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PLATE LXXXVIII. COCKSPUR THORN. 



1 A tlr.wering hrancli, x I. 



I. LongitiKlinal section of a flower, natural size. 



3. A fruiting lirancli. x \. 



4. Seotiou of a fruit, s \. 



5. A winter twig, natural size. 



6. Section of a brancli slinwinff tliorus with buds at their bases, enlarged. 



