Townsendia lemhiensis (Asteraceae, Astereae): A narrowly endemic new species from Idaho, USA

By

Lee, Christopher
Björk, Curtis R. (Curtis Randall), 1972-
Whitton, Jeannette

Type

Article

Date of Publication

2022-3-22

Original Publication

PhytoKeys

Volume

193

Pages

67--75

Subjects

apomixis , Compositae , Flora of Idaho , Lemhi Valley

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers [2010]-

Identifiers

DOI: https://doi.org/10.3897/phytokeys.193.76365

 

Abstract

Townsendia lemhiensis (Asteraceae) is described from the Lemhi Valley of east-central Idaho. From a genus with weak intrinsic isolating barriers, T. lemhiensis remains distinct apparently due to apomixis and to its isolation and habitat specialization on spatially limited occurrences of ashy white soils in the Lemhi Valley. Despite similarities to T. spathulata, this new species differs in its persistent pappus, fewer series of phyllaries and sericeous rather than long woolly hairs.