Potamogeton ×tosaensis (Potamogetonaceae), A New Hybrid from Kochi Prefecture (Shikoku, Japan)

Kaori Horii; Takashi Yamanouchi; Yasuro Kadono

doi:10.18942/apg.201619

Potamogeton ×tosaensis (Potamogetonaceae), A New Hybrid from Kochi Prefecture (Shikoku, Japan)

Kaori Horii, Takashi Yamanouchi, Yasuro Kadono

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Keywords: connate stipules, hybrid, Kochi Prefecture, Potamogeton, P. octandrus, P. pusillus, P. ×tosaensis

JOURNAL FREE ACCESS

2017 Volume 68 Issue 2 Pages 111-116

DOI https://doi.org/10.18942/apg.201619

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Abstract

Potamogeton ×tosaensis Kadono, Horii & Yamanouchi (Potamogetonaceae) is described here as a new hybrid. Although similar to P. octandrus, it is morphologically distinguishable in several traits. Most conspicuous of these are the connate stipules and fusiform turion bearing one acerose leaf. The plants were found only in and around Kochi City, Shikoku. Potamogeton octandrus and P. pusillus are the putative parents.

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