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Abstract Detail


McCauley, Ross [1], Jaramillo, Patricia [2].

Systematics of the endemic species of Lithophila (Amaranthaceae: Gomphrenoideae) in the Galapagos Islands.

The genus Lithophila is a small group of three species closely allied to the large widespread American genus Gomphrena and is characterized by two filiform stigma lobes and two fertile stamens. One variable species, L. muscoides, is widespread in coastal regions of the Caribbean and two species of very limited distribution (L. radicata and L. subscaposa) occur in the Galapagos Islands. Using a set of recently collected material deposited at the CDS herbarium and collections at other worldwide herbaria, we are reassessing the phylogenetic relationship of the Galapagos taxa to L. muscoides and updating the geographic distribution of the taxa across the archipelago. We are also examining the morphological variability of this little-studied group of Galapagos endemics using morphometric analyses and have identified additional subspecific variability in L. subscaposa. This work is part of a revision of the Gomphrenoid Amaranths of the islands and is focused on understanding the evolution of this unique group and contributing data crucial for their conservation.

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1 - Fort Lewis College, Department Of Biology, 1000 Rim Drive, Durango, CO, 81301, United States
2 - Estación Científica Charles Darwin, Isla Santa Cruz, Galápagos, Ecuador

Galapagos Islands
Island evolution

Presentation Type: Poster
Session: P, Systematics
Location: Grand Ballroom - Exhibit Hall/Mayo Civic Center
Date: Monday, July 23rd, 2018
Time: 5:30 PM This poster will be presented at 5:30 pm. The Poster Session runs from 5:30 pm to 7:00 pm. Posters with odd poster numbers are presented at 5:30 pm, and posters with even poster numbers are presented at 6:15 pm.
Number: PSY013
Abstract ID:783
Candidate for Awards:None

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