Smithsonian National Museum of Natural History

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Department ofBotany

titan Arum opening

Growth Chart of the Amorphophallus titanum at the U.S. Botanic Garden

Measurements are in inches. Measurements from the soil surface to the top of the spadix were started on October 12 and are taken every day at noon. Measurements of the spathe were started on 4 November as a comparison in growth rates. The spathe was first visible on 28 October.

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