Abstract Detail

Systematics

Wilson, Carol A [1].

Recovered clades change our understanding of relationships in the Eurasian bearded Iris (subgenus Iris).

Subgenus Iris is wholly Eurasian, distributed in temperate regions from western China to eastern and southern Europe. They are found in mountainous and/or dry rocky sites from near sea level in the eastern Mediterranean to elevations of 4500 m in the Himalayas. These species have an easily recognized synapomorphy, a multicellular beard on each petaloid sepal. The current classification recognizes two large and relatively well known and four smaller and less known sections in the subgenus. Seventy-two taxa representing each of the six sections and about 80% of the recognized species in subgenus Iris and 11 outgroup taxa were included in the study. Phylogenetic analyses of sequence data recovered six major clades but not all clades correspond to recognized sections. Instead three of the four smaller sections are not monophyletic as currently circumscribed. Support for clades recovered include several morphological characters and biogeography. The sister clade to subgenus Iris has two beardless species that occur in Asia and the next sister group is from the eastern USA and has sepal pubescence but not a beard of multicellular trichomes.

1 - University of California, Berkeley, University and Jepson Herbaria, 1001 Valley Life Sciences Building #2465, Berkeley, CA, 94720-2465, USA

Keywords:
Iris
Iridaceae
phylogeny
classification
Eurasian.

Presentation Type: Oral Paper
Session: 20, Basal Dicots/Monocots part A (Asparagales)
Location: 200/Savannah International Trade and Convention Center
Date: Tuesday, August 2nd, 2016
Time: 9:30 AM
Number: 20007
Abstract ID:910
Candidate for Awards:None