Sedum formosanum subsp. miyakojimense (Crassulaceae), a new subspecies from Miyako-jima Island of the Ryukyu Islands, Japan

Takuro Ito, Chih Chieh Yu, Masatsugu Yokota, Goro Kokubugata

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We re-examined the taxonomic status of plants treated as Sedum formosanum (Crassulaceae) from Miyakojima Island of the Ryukyu Islands, Japan, using morphological comparison and molecular phylogenetic analyses with related species. In morphology, plants from Miyako-jima Island bore a close resemblance to the other plants of S. formosanum, but differed in being perennial, polycarpic, and having lateral axillary branches. Molecular analyses based on ITS of nrDNA and six regions of cpDNA sequencing indicated that the Miyako-jima plants formed a distinct subclade. This subclade was part of a polytomy with three other subclades comprising nine taxa endemic to Taiwan and S. formosanum from other areas, including the type locality. Therefore, we propose and describe the Miyako-jima plants as a new subspecies, Sedum formosanum subsp. miyakojimense.

Original languageEnglish
Pages (from-to)51-70
Number of pages20
JournalPhytoKeys
Volume148
DOIs
Publication statusPublished - 2020
Externally publishedYes

Keywords

  • Miyako Islands
  • phylogeny
  • stone crop
  • succulent plants
  • taxonomy

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Plant Science

Fingerprint

Dive into the research topics of 'Sedum formosanum subsp. miyakojimense (Crassulaceae), a new subspecies from Miyako-jima Island of the Ryukyu Islands, Japan'. Together they form a unique fingerprint.

Cite this