Triantha

Triantha
Triantha occidentalis
Scientific classificationこの分類を編集する
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Alismatales
Family: Tofieldiaceae
Genus: Triantha(Nutt.) Baker
Synonyms[1][2]
  • Tofieldia section TrianthaNutt.
  • TrianthellaHouse 1921 not Hook.f. 1846

Triantha is a small genus of flowering plants in the familyTofieldiaceae, first described as a genus in 1879.[1][3]False asphodel is a common name for plants in this genus.[4]

Triantha has four known species. One of these is endemic to Japan. The other three are native to North America.[2][5][6]

A comparison of DNA sequences has indicated that Triantha glutinosa might be two species.[7]

Before the family Tofieldiaceae was established in 1995, Triantha and related genera were usually placed in Nartheciaceae, Liliaceae, or Melanthiaceae, but molecular phylogenetic studies of monocots and Alismatales have shown that inclusion of Triantha etc. in these families makes them polyphyletic.

Some authors have included Triantha within the genus Tofieldia.[8]Triantha is distinguished from Tofieldia by its glandular-pubescent stems and by the presence of seed appendages. In 2011, a study of two nucleargenes and ten chloroplast genes showed that Triantha and Tofieldia are monophyletic and closely relatedsisterclades. The species of Triantha are so closely related that the authors could not resolve any relationships among them.[7]

It was reported in August 2021 that the species Triantha occidentalis is carnivorous, catching insects with sticky hairs and enzymatic secretions on its stem.[9]

[ 2 ]
  1. Triantha glutinosa (Michx.) Baker - 粘着性のあるアスパラガス - カナダ、アラスカ、五大湖地域、メイン州、米国の他の地域に散在
  2. Triantha japonica (Miq.) Baker -本州
  3. Triantha occidentalis (S.Wats.) RRGates -西部偽アスパラガス - カナダ西部 ( Alb BC )、米国西部 ( AK 、WA CA ID 、MT 、 WY )
  4. Triantha racemosa (Walter) 小型- 沿岸性偽アスフォデル -テキサス州からニュージャージー州にかけてのアメリカ合衆国の沿岸平野

参考文献

  1. ^ a b「Tropicos | 名前 - Triantha (Nutt.) Baker」 www.tropicos.org 2017年2月2閲覧
  2. ^ a b c「World Checklist of Selected Plant Families: Royal Botanic Gardens, Kew」 . apps.kew.org . 2017年2月2日閲覧
  3. ^ベイカー、ジョン・ギルバート。1879年。リンネ協会誌、植物学17(2):490-491(ラテン語)
  4. ^ NRCS . Triantha . PLANTSデータベース.米国農務省(USDA) . 2015年12月14日閲覧
  5. ^ 「Triantha in Flora of North America @ efloras.org」www.efloras.org . 2017年2月2日閲覧
  6. ^北米生物相プログラム 2013 郡分布地図画像
  7. ^ a b東 浩志・戸部 博志. 2011. 「Tofieldiaceae(アリスマタレス目)の分子系統学的解析:科の限定と属間関係」. Journal of Plant Research 124 (3):349-357. doi : 10.1007/s10265-010-0387-5
  8. ^ 「Tofieldia in Flora of North America @ efloras.org」www.efloras.org . 2017年2月2日閲覧
  9. ^ Qianshi Lin、 Cécile Ané、Thomas J. Givnish、Sean W. Graham. 2021.「ユニークな粘着性蛍光トラップを備えた新しい食虫植物系統(Triantha)」 PNAS 118(33). doi : 10.1073/pnas.2022724118