Narrowleaf Water Plantain. Plant.
Gary Larson @ USDA-NRCS PLANTS Database / USDA NRCS. 1992. Western wetland flora: Field office guide to plant species. West Region, Sacramento, CA.
1992
<a rel="nofollow" class="external autonumber" href="https://plants.usda.gov/cgi_bin/topics.cgi?earl=plant_profile.cgi&amp;symbol=ALGR&amp;photoID=algr_001_avp.tif">[1]</a>