Sedum danjoense (Crassulaceae), a new species of succulent plants from the danjo islands in Japan

Takuro Ito, Hiroki Nakanishi, Yoshiro Chichibu, Kiyotaka Minoda, Goro Kokubugata

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

We compared Sedum formosanum with related species using morphological traits and molecular phylogenetic analysis of nrITS sequences. Morphological comparisons revealed that the plants historically treated as S. formosanum in the Danjo Islands of Japan had 4-merous flower; 8 stamens; narrow triangular sepals of equal size; horizontal carpels when matured; and an irregular branching form. These traits differed from those of S. formosanum in other regions, which has 5-merous flowers; 10 stamens, thick spatulate sepals of unequal size; erect carpels when matured; and a trichotomous branching form. Phylogenetic analysis indicated that plants known as S. formosanum in the Danjo Islands were sister group to S. tetractinum, which are endemic to China and belong to a different clade than S. formosanum, which are found in other regions. Based on the present morphological comparisons and phylogenetical analyses, we describe plants from the Danjo Islands as a new species, S. danjoense, which is distinct from S. formosanum.

Original languageEnglish
Pages (from-to)23-34
Number of pages12
JournalPhytotaxa
Volume309
Issue number1
DOIs
Publication statusPublished - 2017 Jun 9
Externally publishedYes

Keywords

  • East Asia
  • ITS
  • Phylogeny
  • Sedum formosanum
  • Succulent

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Plant Science

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