Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search help
2 results
  1. NLM Digital Collections - Botany of the northern and middle states, or, A description of the plants found in the United ... 
    Publication: Albany : Printed by Webster and Skinners ..., 1833
    resource.nlm.nih.gov/8813775
    ... various parts of the N. S. Jerusalem Artichoke. 37. HELIOPSIS. Pers. Involucre imbricate ; scales subovate, nearly equal. Rays ...
  2. NLM Digital Collections - The Portland catalogue of Maine plants, published by the Portland Society of Natural History, ... 
    Publication: Portland : Transcript Print, 1868
    resource.nlm.nih.gov/101207731
    ... Xanthium, Tourn. strumarium, L. 374 var. echinatum, Gray. Heliopsis, Persoon. 375 laevis, Pers. Rudbeokia, L. 376 laeiniata, ...