Soares e Silva, U C; Rapini, A; Liede-Schumann, S; Ribeiro, PL; Van den Berg, C: Taxonomic considerations on Metastelmatinae (Apocynaceae) based on plastid and nuclear DNA, Systematic Botany, 37(3), 795–806 (2012), doi:DOI 10.1600/036364412X648733
Key words: Asclepiadaceae, Asclepiadoideae, incongruent data, phylogenetics, taxonomy, systematics
Abstract:

Abstract—The Metastelmatinae (Asclepiadoideae, Apocynaceae) include 13 genera and approximately 260 species with complex morphological affinities that are broadly distributed in the Neotropics. This study investigated phylogenetic relationships within this subtribe using plastid (trnT-F, trnS-G, trnH-psbA, trnD-T, rps16, and matK) and nuclear (ITS) markers. The taxonomic sampling focused on the South American species, and included approximately 25% of the subtribe. Individual data partitions, and combined datasets were analyzed using Bayesian inference, maximum likelihood, and maximum parsimony. The results indicated that most genera of Metastelmatinae are not monophyletic. Internal relationships in the subtribe and key morphological characters used in the taxonomy of the group are discussed. The lack of resolution in the molecular phylogeny, incongruent phylogenetic signals between plastid and nuclear datasets, and the lack of morphological features for individual clades prevented major taxonomic changes in this group, those of which were restricted to the inclusion of Barjonia harleyi and Hemipogon harleyi into Minaria forming the new combinations Minaria harleyi and M. volubilis, and the synonymy of Macroditassa under Peplonia with the new combinations Peplonia adnata and P. macrophylla.

Upcoming ...
Ökologisch-Botanischer Garten:
Sa. 2018-07-21
UNIKAT - Das Sommer- und Tanzevent der Universität im Ökologisch-Botanischen Garten, Tickets unter: www.unikat.uni-bayreuth.de
Su. 2018-07-22
Literatur und Musik: Serenade am Victoria-Becken
We. 2018-07-25
Vom Korn zum Brot: Öffentliche Brotprüfung der Bäckerinnung Bayreuth Stadt und Land
We. 2018-07-25
Unser täglich Brot: Getreide und Pseudocerealien
Su. 2018-08-05
Heitere Botanik: Pflanzen in Versen von K.H. Waggerl
Weather research site
Luftdruck (356m): 965.7 hPa
Lufttemperatur: 28.0 °C
Niederschlag: 0.0 mm/24h
Sonnenschein: 9 h/d
Wind (Höhe 17m): 5.3 km/h
Wind (Max.): 12.2 km/h
Windrichtung: O

...more
Globalstrahlung: 192 W/m²
Lufttemperatur: 25.3 °C
Niederschlag: 0.0 mm/24h
Sonnenschein: 9 h/d
Wind (Höhe 32m): 4.6 km/h
Wind (Max.): 12.8 km/h

...more
This site makes use of cookies More information