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Stem aerenchyma as a character separating hymenachne and sacciolepis (Gramineae, Panicoideae)

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Abstract

Hymenachne andSacciolepis, two closely related tropical genera, have been distinguished by the saccate second glume in the latter, a trait lacking in the former. It is difficult to assign certain species to genus on this basis alone. A survey of both genera showed that aerenchyma fills the stem pith region ofHymenachne species but is absent or nearly so fromSacciolepis species. The leaf epidermis ofHymenachne bears prickle cells, which have not been reported fromSacciolepis. Additional anatomical details are given forH. amplexicaulis.

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Authors and Affiliations

  1. Department of Botany and Plant Pathology, Iowa State University, 50011, Ames, IA

    Richard W. Pohl & Nels R. Lersten

Authors
  1. Richard W. Pohl
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  2. Nels R. Lersten
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Additional information

Journal Paper J-7816 of the Iowa Agriculture and Home Economics Experiment Station, Ames, Project 1833. The work was supported in part by NSF grant GB-7307-X. The facilities of the Iowa State Herbarium, supported by the Science and Humanities Research Institute, were used.

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Pohl, R.W., Lersten, N.R. Stem aerenchyma as a character separating hymenachne and sacciolepis (Gramineae, Panicoideae). Brittonia 27, 223–227 (1975). https://doi.org/10.2307/2805893

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  • DOI: https://doi.org/10.2307/2805893

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