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Abstract Detail

Floristics & Taxonomy

Neubig, Kurt [1], Garwood, Nancy [2], Jordan, Kristina [3], Flowers, Nick [3], Humphreys, Aelys [4], Russell, Stephen [5].

Trema domingensis rises like a phoenix from the ashes of T. integerrima: A reassessment of the entire-leaved species of Neotropical Trema (Cannabaceae).

The genus Trema (Cannabaceae) suffers from a historical lack of taxonomic study. We sought to ameliorate this by studying the genus from phylogenetic and morphological perspectives. This study focuses on the three entire-leaved species of Neotropical Trema (T. integerrima (Beurl.) Standl., T. domingensis Urb., and T. laxiflora Lundell). We resolve three problems concerning these species: 1) Phylogenetic and morphological patterns show that they are best treated as a single species. 2) The date of publication gives priority to the name T. integerrima, as the basionym was published in 1856. However, the type specimen is not a Trema. Thus, the species becomes T. domingensis. 3) The types of T. domingensis are mixed collections. We provide a historical review to understand how these problems arose and persisted unnoticed for decades.

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1 - Southern Illinois University, Dept Of Plant Biology, 1125 Lincoln Dr., Life Science II, Room 420, Carbondale, IL, 62901, United States
2 - Southern Illinois University, Plant Biology, 1125 Lincoln Ave., Life Science II, Mailcode 6509, Carbondale, IL, 62901, United States
3 - Southern Illinois University, Plant Biology, Carbondale, IL, 62901, USA
4 - Stockholm University, Department of Ecology, Environment and Plant Sciences, Stockholm, Sweden
5 - Natural History Museum, Core Research Laboratories, London, UK

species circumscription.

Presentation Type: Oral Paper
Session: 46, Floristics & Taxonomy
Location: 105/Mayo Civic Center
Date: Wednesday, July 25th, 2018
Time: 4:30 PM
Number: 46012
Abstract ID:784
Candidate for Awards:None

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