Tocoyena guianensis K.Schum. var. guianensis
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Authority
Maguire, Bassett. 1965. The Botany of the Guayana Highland. Mem. New York Bot. Gard. 12 (3): 1-285.
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Family
Rubiaceae
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Scientific Name
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Type
Type. Cayenne, French Guiana, Martin, 316 (photo of type from B at NY).
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Description
Distribution and Ecology - Distribution. French Guiana and states of Pará, Amapá, and Maranhao, Brazil. BRAZIL. Pará: in paludosis ad flumen Curicamba, Obidos, Ducke 22906. Amapá: between Cachoeira Mucurú, 0° 32' N, 53° 8' W, and Cachoeira do Repoto, at alt. ca. 160 m, Egler d Irwin 46569. Maranhao: Maracassumé River region, Froes 1741.
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Discussion
The photo of the type specimen shows the midrib and lateral nerves of the leaf-blades with abundant pubescence of a spreading hispid type. This is well matched by the Ducke 22906 specimen cited above. In the other collections cited, the pubescence on the lower midrib and lateral nerves is of a more appressedstrigose type. The lower surface of the leaf-blades in the type photo shows abundant pubescence, although Schumann describes (Fl. Brasil. p. 346) the leaves as "supra pilis inspersis, d e m u m nervis exceptis glabratis subtus hispidis scabridis," a statement which does not too well match the evident pubescence shown on the type photo. None of the variations of T. guianensis, including the specimens examined of T. guianensis var. guianensis, other than that of Ducke 22906, show anything except a strigose, non-spreading type of pubescence on the midrib and lateral nerves of the lower leaf-surface.
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Distribution
Distribution. French Guiana and states of Pará, Amapá, and Maranhao, Brazil.
Brazil South America|