Costus amazonicus (Loes.) J.F.Macbr. subsp. amazonicus
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Authority
Maas, Paulus J. M. 1972. Costoideae (Zingiberaceae). Fl. Neotrop. Monogr. 8: 1-140. (Published by NYBG Press)
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Family
Costaceae
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Scientific Name
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Type
Type. Tessmann 4903 (lectotype, G; isolectotype, NY), lower Morona River near confluence with Maranon River, Loreto, Peru. The holotype was destroyed at Berlin in 1943; one of the isotypes is designated here as lectotype.
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Synonyms
Costus malortieanus var. amazonicus Loes., Costus amazonicus (Loes.) J.F.Macbr.
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Description
Subspecies Description - Upper side of leaves glabrous to rather densely strigose, lower side sparsely to rather densely strigose. Margins of bracts and bracteoles dilacerating into fibers. Calyx (7-) 10-15 mm wide, lobes shallowly triangular, 1-3 mm long. Corolla-lobes densely puberulous. Labellum ca 90 mm long.
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Discussion
Cuatrecasas 13714 (F) from Quebrada del Cauchal, mouth of Rio Digua, El Valle, Colombia, differs from this subspecies by its glabrous corolla. It cannot be identified with certainty, as it may also belong to C. zamoranus.
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Distribution
(Fig 30, 3). Ecuador and Peru; in rain forests, from 100 to 1100 m.
Ecuador South America| Napo Ecuador South America| Pastaza Ecuador South America| Santiago-Zamora Ecuador South America| Peru South America| Amazonas Peru South America|