A New Variety of <i>Cyperus pacificus </i> (Ohwi) Ohwi (Cyperaceae)

• Fujii Shinji

  Faculty of Human Environments, University of Human Environments

Abstract

Cyperus pacificus (Ohwi) Ohwi var. margoinflatus S. Fujii, a new variety of C. pacificus (Cyperaceae) is described. It closely resembles C. pacificus var. pacificus in the oblong-ellipsoid achenes with winged margins, but the margins are well inflated with spongy parenchyma. It usually occurs in the dried bottoms of irrigation ponds, and often intermixed with other species of Cyperaceae such as C. extremiorientalis Ohwi, C. nipponicus Franch. et Sav. var. nipponicus and var. spiralis Ohwi, Fimbristylis dipsacea (Rottb.) C.B. Clarke, and F. squarrosa Vahl var. esquarrosa Makino. A key to the new variety and closely related taxa is also provided.

Journal

• Acta phytotaxonomica et geobotanica

  Acta phytotaxonomica et geobotanica 67 (2), 123-126, 2016-06-30

  The Japanese Society for Plant Systematics

Keywords

• achene
• <i>Cyperus pacificus </i> var. <i>margoinflatus</i>
• inflated margin
• irrigation pond
• Japan
• Korea
• new variety

Details

• CRID: 1390001205269803520
• NII Article ID: 130005251467
• DOI: 10.18942/apg.201603
• ISSN: 21897042
• ISSN: 13467565
• Text Lang: en
• Data Source:
  • JaLC
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed