Phylogenetic Relationships of Triplaris and Ruprechtia: Re-delimitation of the Recognized Genera and Two New Genera for Tribe Triplarideae (Polygonaceae)
Recent phylogenetic work has increased our knowledge of the relationships within Polygonaceae. However, few studies have explored the generic relationships within Eriogonoideae. Two understudied genera are Triplaris and Ruprechtia (tribe Triplarideae), a group of approximately
55 Neotropical species of trees, shrubs, and lianas. The generic classification of Triplaris and Ruprechtia has been unstable mostly due to different taxonomic interpretations and the difficulty of characterizing each genus morphologically. Although some studies have proposed
diagnostic morphological characters for each, most have exceptions. In this study, we explored the phylogenetic relationships of 32 species of Triplaris and Ruprechtia using four chloroplast (matK, ndhF, rps16-trnK, ndhC-trnV), and two nuclear regions (ITS, second intron
of Leafy). Results confirm the monophyly of Triplaris, but Ruprechtia is polyphyletic. To maintain monophyletic genera, two new names are proposed:
Magoniella
and
Salta
. The two new genera are formally described and morphological synapomorphies
are proposed for the four genera of Triplaridae. Three species are transferred to these new genera,
Salta triflora
,
Magoniella laurifolia
, and
M. obidensis
.
Keywords: MAGONIELLA; POLYGONACEAE; RUPRECHTIA S. S; SALTA; TRIPLARIDAEAE; TRIPLARIS
Document Type: Regular Paper
Publication date: 01 July 2011
- Systematic Botany is the scientific journal of the American Society of Plant Taxonomists and publishes four issues per year.
2011 Impact Factor: 1.517
2011 ISI Journal Citation Reports® Rankings: 87/190 - Plant Sciences
34/45 - Evolutionary Biology - Editorial Board
- Information for Authors
- Submit a Paper
- Subscribe to this Title
- Membership Information
- Ingenta Connect is not responsible for the content or availability of external websites
- Access Key
- Free content
- Partial Free content
- New content
- Open access content
- Partial Open access content
- Subscribed content
- Partial Subscribed content
- Free trial content