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ACHENE MICRO-MORPHOLOGY AS A SYSTEMATIC AID TO THE SERIES PLACEMENT OF SVENSON'S UNDESIGNATED ELEOCHARIS (CYPERACEAE) SPECIES

Francis J. Menapace
Rhodora
Vol. 95, No. 883/884 (July/October 1993), pp. 214-224
Stable URL: http://www.jstor.org/stable/23312981
Page Count: 11
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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.
ACHENE MICRO-MORPHOLOGY AS A SYSTEMATIC AID TO THE SERIES PLACEMENT OF SVENSON'S UNDESIGNATED ELEOCHARIS (CYPERACEAE) SPECIES
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Abstract

Eleocharis species unassigned by Svenson to the series level at the completion of his worldwide monograph were examined utilizing scanning electron microscopy. Acid treated achenes with their cuticle and outer periclinal cell walls removed revealed micro-morphological characters in support of assigning E. squamigera and E. subarticulata to the series Palustriformes, subseries Truncatae. Although the results failed to delegate unequivocally E. albida and E. melanocarpa, additional insight regarding their infrageneric relationship was obtained. An assessment of E. minarum proved to be impossible due to the absence of mature achenes.

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