Self‐pollination of Asarum caulescens Maxim. (Aristolochiaceae) in Japan

Hajime Tanaka, Tetsukazu Yahara

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9 Citations (Scopus)


Abstract Observations in two populations of Asarum caulescens belonging to sect. Asarum indicate that inbreeding predominates becuase (1) no effective pollinator was observed, (2) bagged flowers set fruits with well‐swollen seeds, and (3) the behaviour of filaments, changing from recurved to straight posture, results in direct deposition of pollen grains on the stigmas. This result agrees with reports on three other species of sect. Asarum in Europe and North America. We suggest that species of sect. Asarum diverged from an autogamous ancestor.

Original languageEnglish
Pages (from-to)133-136
Number of pages4
JournalPlant Species Biology
Issue number1-2
Publication statusPublished - Jun 1987
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Plant Science


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