© Joseph Dougherty.  All rights reserved.  <font size=5><i>Costus igneus</i></font>    <font size=5> Yellow Spiral Ginger</font>  Range:  Brazil Collection: San Francisco Conservatory of Flowers  This is a rare species of Costus.   Costus is a genus of perennial tropical herbaceous plants from the costus family (Costaceae). They are often characterized and distinguished from relatives such as Zingiber (true ginger) by their spiraling stems. The genus as a whole is thus often called spiral gingers.
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