Flora of North America species comparison

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Tolumnia

dancing-lady orchid
Habit Herbs, epiphytic or rarely terrestrial, ± climbing, fan-shaped.
Rhizomes

often elongate, covered with bracts;

pseudobulbs reduced to absent.
Leaves

basal 3–7, apical not more than 1;

blade recurved, lanceolate, laterally flattened–3-gonal, margins often serrulate.
Inflorescences

racemes or weakly paniculate;

bracts narrowly triangular.
Flowers

sepals and petals spatulate-clawed;

lateral sepals sometimes partially connate;

lip 3-lobed, pandurate, without nectar cavity;

callus prominent tuberculate-lobulate;

column with pair of outstretched apical wings, without hood;

stigmatic cavity round;

rostellum not prominent. Fruits capsules, ellipsoid.

Tolumnia
Distribution
from USDA
Restricted to s Fla; West Indies
[BONAP county map]
Discussion

Species 30 (1 in the flora).

Tolumnia does not belong to the main body of Oncidium (its traditional placement) even though many of the species have floral morphologies nearly identical to that of Oncidium. It shares, with other twig epiphytes, a fan-shaped habit and seeds with prominent extensions of the testa.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 26, p. 651. Authors: Mark W. Chase, James D. Ackerman.
Parent taxa Orchidaceae > subfam. Epidendroideae > tribe Maxillarieae > subtribe Oncidiinae
Subordinate taxa
T. bahamensis
Synonyms Xaritonia
Name authority Rafinesque: Fl. Tellur. 2: 101. (1837)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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