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Studies on Lejeuneaceae Subfam. Ptychanthoideae (Hepaticae). IV. Verdoornianthus, a New Genus from Amazonas, Brazil

S. R. Gradstein
The Bryologist
Vol. 80, No. 4 (Winter, 1977), pp. 606-611
DOI: 10.2307/3242417
Stable URL: http://www.jstor.org/stable/3242417
Page Count: 6
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Studies on Lejeuneaceae Subfam. Ptychanthoideae (Hepaticae). IV. Verdoornianthus, a New Genus from Amazonas, Brazil
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Abstract

The new Amazonian liverwort genus Verdoornianthus is considered to be a specialized derivative of the widespread tropical genus Archilejeunea. Differences are the absence of innovations, the dull, suberect leaves, the tristratose rhizoid pad and the larger size of the lobule of the female bracts in Verdoornianthus. There are two species, V. marsupiifolius (Spruce) comb. nov. (Lejeunea marsupiifolia Spruce) from the upstream part of the Rio Negro and V. griffinii sp. nov. from Manaus.

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