Acta Phytotaxonomica et Geobotanica
Acta Phytotaxonomica et Geobotanica (APG) is an international peer-reviewed journal published three times a year by the Japanese Society for Plant Systematics. It is the continuation of the journal Societas Phytogeographica Kyoto, Japan. APG publishes research manuscripts in the fields of taxonomy, phylogeny, evolution, conservation, biogeography of plants (including algae and fungi) and related disciplines. Contributions devoted to new taxa, nomenclature, monographs, floristic studies and genetic variation are also invited.
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  日本植物分類学会 が発行
収録数 532本
(更新日 2023/12/03)
Online ISSN : 2189-7042
Print ISSN : 1346-7565
ISSN-L : 1346-7565
ジャーナル 査読 フリー
Scopus
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73 巻 (2022) 1 号 p. 19-33
Seed Morphology and Dispersibility of Orchids in Warm Temperate Japan
Hiroki Nakanishi
Flowering and dispersal phenology, characteristics of fruits, seed shape, and seed and embryo sizes were studied in orchids in the warm temperate zone of Japan. Anemochorous potential was estimated based on the ratio of seed length to embryo length. The data obtained were compared among different life forms: epiphyte, saprophyte (myco-heterotroph), summer green terrestrial and evergreen terrestrial or- chids. The epiphytes, which had the smallest seeds, had the poorest dispersibility. On the other hand, the saprophytes, which had elongated seeds, had excellent dispersibility. Seed size and dispersibility of ter- restrial orchids ranged between those of epiphytes and saprophytes. Most epiphytes had hygroscopic trichomes, which contributed to the release of the seeds from capsule. It was clarified that seed morphol- ogy and dispersal mechanisms in orchids were closely related to their life form.
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2023年度第17回日本植物分類学会論文賞受賞論文

73 巻 (2022) 2 号 p. 107-118
Biosystematic Studies of Carex (Cyperaceae) II. Carex nasuensis, a New Species from Japan
Kotaro T. Takahashi, Tatsunari Noguchi, Jiro Oda, Shizuka Fuse, Minoru N. Tamura
A new species of Carex sect. Paniceae (Cyperaceae) is described based on specimens from Honshu, Japan, and named C. nasuensis. It is similar to C. filipes and C. macroglossa, but differs from C. filipes in having pale green staminate scales, pale brown basal part of the sheath and perigynia tapering to the apex, and from C. macroglossa in having fewer (2–4) perigynia per pistillate spike, pistillate spikes more distantly located on the culm (3.6–7.5 cm between the uppermost and second uppermost pistillate spikes), flat or slightly elevated surface of the epidermal cells of the perigynium (without any conspicuous projections) and an achene epidermal cell surface with a small conical silica deposit surrounded by a marginal depression. A phylogenetic analysis based on the combined data set of plastid regions atpB–rbcL, rpl16–rpl16–rps3, rps16, matK and trnL–trnL–trnF and nuclear regions ITS and ETS (p = 0.41 in ILD test) indicated that C. nasuensis was distinct from both C. filipes and C. macroglossa, supporting the recognition of C. nasuensis as an independent species.
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2023年度第17回日本植物分類学会論文賞受賞論文

72 巻 (2021) 3 号 p. 179-204
Biosystematic Studies on Lilium (Liliaceae) I. Phylogenetic Analysis Based on Chloroplast and Nuclear DNA Sequences and a Revised Infrageneric Classification
Seita T. Watanabe, Kazuhiko Hayashi, Katsuro Arakawa, Shizuka Fuse, Hidetoshi Nagamasu, Hiroshi Ikeda, Atsushi Kuyama, Piyakaset Suksathan, Manop Poopath, Rachun Pooma, Yong-Ping Yang, Minoru N. Tamura
Based on molecular phylogenetic evidence, phylogenetic analyses of both cpDNA and nrDNA sequences based on 76 (cp) and 77 (nr) samples representing 64 species, two subspecies, and three (cp) and two (nr) varieties of Lilium and six (cp) and five (nr) samples from Cardiocrinum, Fritillaria, and Notholirion as outgroups were used to better understand relationships within Lilium and to revise its infrageneric classification. The same individuals were used for both cpDNA and nrDNA analyses to avoid confusion caused by genetic polymorphism within a species. Nine thousand eight hundred thirty seven bp from 10 cpDNA regions and 1069 bp from the nuclear (ITS + ETS) regions were analyzed. The same twelve clades were formed in Lilium in both the chloroplast and nuclear trees (one clade of the former tree and one clade of the latter tree were not strictly formed because of low resolution). In light of the cpDNA and nrDNA trees obtained, 13 morphological characters, including a pair of marginal ridges along a central groove on the adaxial surface of the tepals were examined with attention given for the first time to the use of this character as having diagnostic value. The morphological evidence supported the twelve clades. Based on molecular and morphological evidence, a revised infrageneric classification of Lilium recognizing twelve clades as twelve sections is proposed.
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2022年度第16回日本植物分類学会論文賞受賞論文

72 巻 (2021) 2 号 p. 93-111
Functional Traits Divergence in Parallelly Evolved Rheophytic Populations of Solidago virgaurea L. Complex (Asteraceae) in Japan
Shota Sakaguchi, Atsushi Abe, Koki Nagasawa, Daiki Takahashi, Hiroaki Setoguchi, Masayuki Maki, Ryuta Kyan, Takako Nishino, Naoko Ishikawa, Shun K. Hirota, Yoshihisa Suyama, Motomi Ito
Repeated adaptation to similar environments can lead to divergence of phenotypes in different populations. Such evolutionary changes sometimes result in incongruence between morphology and molecular phylogeny, for which careful biological investigation is required. Natural phenotypic variation in rheophytic populations of the Solidago virgaurea L. complex (Asteraceae), which evolved multiple times from ancestral dryland forms in Japan, are here reported. Common garden experiments and population genetic analysis were used to evaluate the extent to which parallelly evolved rheophytes diverged in morphological, phenological and genotypic features to understand their complex evolutionary history. Significant divergence among rheophytic populations was detected in multiple traits, even in leaf morphological traits, which are similarly subjected to purifying selection by water pressure in riparian habitats. Whereas most of the variation were attributed to differences between specific pairs of populations, flowering phenology showed latitudinal variation, which likely evolved along a large-scale environmental cline. Multivariate analysis revealed that at least the population on Okinawa Isl., at the edge of the range of the species, is phenotypically distinguishable from rheophytic populations on the main islands. Phylogenetic analysis also suggested that the Okinawan rheophytes are genetically isolated from parapatric dryland populations. Based on the evidence, the Okinawan rheophytic plants are recognized as specifically distinct and are described as Solidago yambaruensis S. Sakaguchi & Mot. Ito.
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2022年度第16回日本植物分類学会論文賞受賞論文

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