External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- in Rep. Geol. Surv. Ark.
- 1888(iv). 236
- Family as entered in IPNI
Branner & Coville, who authored the article, acknowledged Trelease for revising their list (of plant names), but did not ascribe any nomenclatural novelty to Trelease.