https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=530055
ITIS - Report: Ribes hudsonianum var. petiolare
The Integrated Taxonomic Information System (ITIS, www.itis.gov) partners with specialists from around the world to assemble scientific names and their...
itisreportribesvar
https://scholarworks.uni.edu/pias/vol94/iss1/5/
"Pennisetum petiolare, a pseudopetiolate African Grass Adventive in low" by Richard W. Pohl
Pennisetum petiolare, a grass native to the Sudan and Ethiopia and never previously reported from North America, occurred in a lawn in Ames, Iowa. The source...