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Thesis
NOMENCLATURAL AND MORPHOLOGICAL STUDIES IN THE ANDEAN CLADE OF CLEOMACEAE
Washington State University
Master of Science (MS), Washington State University
01/2021
DOI:
https://doi.org/10.7273/000005424
Handle:
https://hdl.handle.net/2376/119241
Abstract
The Andean clade of Cleomaceae is a well-recognized and well-supported clade in phylogenetic studies of the family. However, there are outstanding problems with species nomenclature and morphological boundaries of species that need to be addressed. My thesis focuses on resolving nomenclatural problems in Andinocleome and related genera and using morphometric analyses to better understand morphological variation in Andinocleome. Multiple species needed nomenclatural circumscription under current generic concepts, and so we here organize the species diversity among four genera in the Andean Clade: Andinocleome, Cochranella, Podandrogyne, and Pterocleome. The species Cleome anomala, C. chilensis, C. glandulosa, C. limoneolens, C. longifolia, C. mathewsii, and C. moritziana are included within Andinocleome, whereas Andinocleome pilosa is moved to the monotypic genus Cochranella, and Cleome stylosa is placed in the monotypic genus Pterocleome. We provide nomenclatural updates of genera and species, a key to, and morphological circumscriptions of, the recognized genera, and illustrations of crucial morphological distinctions. The Lechleri Group containing the majority of species in Andinocleome, and I present morphometric analyses on the group to better understand the morphological variation found in this group of hard to distinguish species. A factorial analysis of mixed data (FAMD) was conducted on 161 specimens from the Lechleri Group, with a total of 35 quantitative and qualitative characters traits measured. Geographic maps showcasing distribution and morphological overlap, a key to groups and species of Andinocleome, and botanical illustrations were also created. It was concluded that there are two morphologically distinct clusters each of Andinocleome anomala and Andinocleome lechleri; one with predominantly eglandular pubescence and the other predominantly glandular. Andinocleome longifolia and Andinocleome moritziana are morphological intertwined and geographically distinct. Andinocleome glandulosa is morphologically distinct for its dense glandular pubescence and its range overlaps with the variable glandular varieties of A. anomala and A. lechleri. Lastly, Andinocleome magnifica is the most distinct species in the group, both in morphology and geographic distribution. These results could support both previous hypotheses of hybridization and cryptic speciation but could also support other theories such as phenotypic plasticity.
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Details
- Title
- NOMENCLATURAL AND MORPHOLOGICAL STUDIES IN THE ANDEAN CLADE OF CLEOMACEAE
- Creators
- Emma Margaret McGinty
- Contributors
- Eric H Roalson (Advisor)Jocelyn Hall (Committee Member)Jeremiah Busch (Committee Member)Andrew McCubbin (Committee Member)
- Awarding Institution
- Washington State University
- Academic Unit
- School of Biological Sciences
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University
- Number of pages
- 90
- Identifiers
- 99900592055301842
- Language
- English
- Resource Type
- Thesis