Leafy Vanilla (Vanilla phaeantha)

Part of the Florida's Native and Naturalized Orchids Website

Classification:
  Kingdom:   Plantae - Plants
    Subkingdom:   Tracheobionta - Vascular Plants
      Superdivision:   Spermatophyta - Seed plants
        Division:   Magnoliophyta - Flowering plants
          Class:   Liliopsida - Monocotyledons
            Subclass:   Liliidae - Subclass containing lily and orchid relatives
              Order:   Orchidales - Orchid order
                Family:   Orchidaceae - Orchid Family
                  Subfamily:   Vanilloideae - Vanilloids
                    Tribe:   Vanilleae - Vanilla and related
                      Subtribe:   Vanillinae - Vanilloids

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Distribution Map:

Description: Summary: Terrestrial-to-epiphytic vine, bearing a single, fleshy leaf and a single root at each axil along the strongly zig-zagging stem. Flowers open singly during morning-time, wilting by afternoon. Flowers are quite large, some six inches (15cm) across with green tepals and a tubular, white lip veined with yellow. Common Name: Leafy Vanilla Habitat: Swamps and sloughs in southwestern Florida, in the Fakahatchee Strand and surrounding areas. Flowering season: June through July

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Images:
 

Vanilla phaeantha - vine scrambling up a tree.

Vanilla phaeantha - semi-closed flower

Vanilla phaeantha - fully open flower.

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Description:
 

This orchid is one of no less than four species of Vanilla to be found in the state of Florida. It is one of two that actually bears leaves. Plants start their lives terrestrially in the forest floor, but quickly scramble into the nearby trees, where the roots, borne one or a few per leaf axil, act as holdfasts. Eventually, the terrestrial portion of the plant dies off, leaving the plant growing completely epiphytically as it scrambles all over the nearby trees. This particular species tends to zig-zag rather strongly between leaf axils as it grows.

Once plants are mature enough, clusters of buds will be borne at these same leaf axils. Flowers open sequentially over several weeks, typically one-at-a-time. The large, fleshy flowers (perhaps the largest Floridian orchid flower by sheer diameter) are surprisingly short-lived, opening in the morning and already fading by afternoon.

After pollination, the stem behind the flower will swell into a typical looking "vanilla bean" (although this species is not used to make commercial vanilla flavoring). Usually, a group of "beans" is borne on the same inflorescence, resembling a clump of miniature bananas.

In Florida, this species is found primarily in the Fakahatchee Strand (as well as a few other areas of the Big Cypress Swamp. It is found elsewhere throughout the Caribbean and portions of Central America.

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