Gard. Dict. Abr. ed.4, vol. 3. 1754
Tropical and subtropical regions, North America, Mexico, West Indies, Central America, South America, Africa, Southeast Asia, w Pacific Islands.
Species 100 (5 in the flora).
Vanilla pompona Schiede has escaped cultivation in Miami-Dade County, Florida (P. M. Brown 2002). It may be distinguished from the other Vanilla species by the following combination of characteristics: persistent leaves that are much longer than the internodes; flat or straight sepal and petal margins; a simple, yellow-green to yellow-orange lip with a tuft of retrorse hairs; and floral bracts that are at least 12 mm. In addition to the characteristics above, V. pompona generally has thicker leaves and stems than the two species for which it may be confused, V. planifolia and V. phaeantha.
|1||Leaves much shorter than internodes, early deciduous or persistent.||> 2|
|1||Leaves nearly as long as or longer than internodes, persistent.||> 3|
|2||Lip largely reddish purple, no yellow present (in flora); most leaves early deciduous, a few persistent, margins revolute, apex hooked.||Vanilla dilloniana|
|2||Lip deep red adaxially, shading to white margins, with broad yellow midrib; all leaves early deciduous, margins not revolute, apex not hooked.||Vanilla barbellata|
|3||Sepal and petal margins undulate, apex reflexed; lip disc 3-keeled toward apex, tuft of hairs absent; stems less than 5 mm diam.||Vanilla mexicana|
|3||Sepal and petal margins straight, apex spreading; lip disc without keels, tuft of scalelike hairs present; stems more than 6 mm diam.||> 4|
|4||Sepals 7–9 cm; fruits less than 11 cm.||Vanilla phaeantha|
|4||Sepals 3.5–5.5 cm; fruits 15–25 cm.||Vanilla planifolia|