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This page is maintained 
by Dr. Lena Struwe 
(e-mail), and hosted by
Rutgers University
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updated: 01/19/11 

Coutoubea
(Gentianaceae: Chironieae: Coutoubeinae)

more images

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Common name: 
Coutoubea ramosa: Fregosillo, Lengua pia poco
Coutoubea reflexa:
Cadena

Latin name and synonyms: Coutoubea Aubl., Hist. Pl. Guiane 72, t. 27: 28 (1775).

Species:  Five species.

Distribution:  Tropical South America (5 species) and one species also occurs in Central America (C. spicata).

Habitat:  Savannas, grasslands, open areas, roadsides.

Characteristics:   Annual herbs (rarely perennials, but short-lived). Flowers 4-merous, in dense spikes. Corolla white, salvershaped, tube same length as as lobes. Stamens inserted in upper part of corolla tube; filaments with scale-like basal appendages; anthers long, sagittate, do not become curved after anthesis. Pollen released as tetrads.

Evolution and related plants:   This genus belong to subtribe Coutoubeinae in the tribe Chironieae.  Other genera in this neotropical subtribe are Deianira, Schultesia, and Symphyllophyton.

Economic uses:  

Notes: 

Accepted species (synonyms in parenthesis) and their distribution:

Coutoubea humulis Guyana
Coutoubea minor H.B.K. Venezuela
Coutoubea ramosa Aubl. (Coutoubea racemosa G. Mey.; Exacum racemosum (G. Mey.) Roem. & Schult.; Coutoubea ramosa var. racemosa (G. Mey.) Benth.; Coutoubea ramosa f. racemosa (G. Mey.) Jonker) Colombia, Guyana, Suriname, French Guiana, Peru, Brazil, Venezuela
Coutoubea reflexa Benth. Brazil, Guyana, Venezuela
Coutoubea spicata Aubl.
(Exacum spicatum (Aubl.) Vahl)
Mexico, Belize, Costa Rica, Panama, St. Vincent, Guadeloupe, Colombia, Trinidad, Guyana, Suriname, French Guiana, Peru, Brazil


References and publications

Guimaraes, E. F. & V. L. G. Klein. 1985. Revisão taxonômica do gênero Coutoubea Aublet (Gentianaceae). Rodriguésia (Rio de Janaeiro) 37: 21-45.

Struwe, L., J. W. Kadereit, J. Klackenberg, S. Nilsson, M. Thiv, K. B. von Hagen, & V. A. Albert. 2002. Systematics, character evolution, and biogeography of Gentianaceae, including a new tribal and subtribal classification. Pp. 21-309. In: L. Struwe & V. A. Albert (eds.), Gentianaceae: Systematics and Natural History, Cambridge University Press, Cambridge.

Struwe, L., P. J. M. Maas, O. Pihlar, & V. A. Albert. 1999. Gentianaceae. Pp. 474-542. In: P. E. Berry, K. Yatskievych, & B. K. Holst, editors. Flora of the Venezuelan Guayana, vol. 5. Missouri Botanical Garden, St. Louis. (images)

Weaver, R. E., Jr. & L. Rüdenberg. 1975. Cytotaxonomic notes on some Gentianaceae. J. Arnold Arb. 56: 211-222.

©  Lena Struwe, 2003

 

© Gentian Research Network, 2002-2011.
For corrections and additions, contact Lena Struwe at struwe@aesop.rutgers.edu