Abstract Detail



Systematics

Yue, Jonathan [1], Au, Scarlet [1], Guo, Emily [1], Vo, An [1], Möller, Michael [2], Neill, David A. [3], Clark, John L. [1].

A recently discovered new genus in the Gesneriaceae from the Amazon basin of Ecuador.

A small understory tree was discovered during recent botanical expeditions to eastern Ecuador. Molecular sequence data generated from chloroplast (trnL-F) and nuclear (ITS) markers suggest that this undescribed taxon belongs in the family Gesneriaceae. Phylogenetic analyses support a close relationship with Gasteranthus (tribe Beslerieae), a genus of mostly low growing shrubs with indehiscent berries. The new genus is defined by the presence of dry capsules, arborescent habit, and elongate trichomes in the corolla throat. This species is known from two of the sub-Andean cordilleras in Amazonian Ecuador -- the Cordillera Galeras in Napo province and the northern portion of the Cordillera del Cóndor in Morona-Santiago province. The sub-Andean cordilleras form a discontinuous chain of relatively low mountains east of the main Eastern Cordillera of the Andes. Unlike many of the recently described plant species from these sub-Andean cordilleras, the new genus has not been recorded from the oligotrophic sandstone outcrops of the Cordillera del Cóndor that harbor a number of taxa with biogeographical links to the "tepuis" of the Guiana Shield.


1 - The Lawrenceville School, Science Department, 2500 Main St., Lawrenceville, NJ, 08648, USA
2 - Royal Botanic Garden Edinburgh, 20A Inverleith Row, Edinburgh, EH3 5LR, UK
3 - Universidad Estatal Amazónica, Puyo, Pastaza, Ecuador

Keywords:
Gesneriaceae
Ecuador.

Presentation Type: Oral Paper
Session: 30, Systematics II--Euasterids 1
Location: 113/Mayo Civic Center
Date: Tuesday, July 24th, 2018
Time: 2:15 PM
Number: 30004
Abstract ID:424
Candidate for Awards:None


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