著者
Yasuro Kadono Tomoyoshi Noda Kazumasa Tsubota Kohtaroh Shutoh Takashi Shiga
出版者
The Japanese Society for Plant Systematics
雑誌
Acta Phytotaxonomica et Geobotanica (ISSN:13467565)
巻号頁・発行日
vol.70, no.2, pp.129-134, 2019-06-30 (Released:2019-07-10)

An alien member of the Utricularia (Lentibulariaceae) discovered in Japan is currently assigned to U. inflata, a native of North America. However, some morphological traits differ between the plants in Japan and U. inflata, including the apex of the floral spur and filament of the stamens. The alien plants are completely sterile, while U. inflata is capable of seed production. DNA analysis revealed that the chloroplast DNA sequences of the alien also differ from those of U. inflata in four regions. We provisionally determine the alien plants to be U. cf. platensis, a South American species with which it shares many traits.
著者
Yasuro Kadono Satoko Iida
出版者
The Japanese Society for Plant Systematics
雑誌
Acta Phytotaxonomica et Geobotanica (ISSN:13467565)
巻号頁・発行日
vol.70, no.3, pp.173-182, 2019-10-31 (Released:2019-11-28)

DNA analysis and morphological observation were conducted for a putative Potamogeton hybrid endemic to the Fuji Five Lakes and Lake Ashi and Potamogeton × leptocephalus from Lake Biwa, Japan. Both proved to be hybrids between P. maackianus and P. perfoliatus. However, the hybrid from the Fuji Five Lakes and Lake Ashi was distinct from P. × leptocephalus in certain morphological characteristics. It is described as a new variety P. × leptocephalus var. fujiensis.
著者
Kaori Horii Takashi Yamanouchi Yasuro Kadono
出版者
The Japanese Society for Plant Systematics
雑誌
Acta Phytotaxonomica et Geobotanica (ISSN:13467565)
巻号頁・発行日
vol.68, no.2, pp.111-116, 2017 (Released:2017-09-12)

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.