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Upon (1) the occurrence of stomata upon petals; (2) the 

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AuatomiHche untersuchunffen iiber die Farben der Bliithen. 



o^ 



Pringsh. Jahrb. iii. 59. AVith 1 plate. 



lieferring to the forms vmder which various colouring matters 

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 colour; (3.) Yellow, orange and green are usually associated 



