Thymophylla acerosa
Brewster Co., TX
Spjut & Marin 15051, Nov. 2002

Thymophylla pentachaeta var. belenidium
CA/NV state line just N of I-15, Nov 2007

Thymophylla pentachaeta
TX: Hudspeth Co., rest area along I-10
Nov 2007