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Sinningia iarae (with tuber)

Photo by John Boggan
Grown at Smithsonian Institution greenhouses

S. iarae is a relatively recent introduction from Brazil, which can make a very beautiful specimen.  This photo illustrates a tuberous habit typical of many Sinningias, where much of the tuber is exposed above the surface of the ground.  Many members of the genus grow on rocky hillsides or cliffs.  Another view of this species, illustrating its very beautiful flowering form, can be seen by clicking here.

Plants with exposed tubers such as this are often referred to as "caudiciform", and the tuber itself is sometimes called a "caudex".

 

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