Vernomanus species have been in decline for the last 200 years for unknown causes. With rare exceptions, specimens collected in the 20th century have been limited to aquatica (fresh water) and brevicaulis (short stemmed land plants). These recently discovered photographs were believed to have been taken by a researcher in Indiana in the 1950s and represent the most complete documentation of Vernomanus in its natural habitats.

Vernomanus aquatica, along the Wabash River near Lafayette, IN, Sept. 1954	Vernomanus brevicaulis in early spring Lafayette, IN, Mar. 1956	Vernomanus brevicaulis near Attica, IN Sept. 1955
Vernomanus aquatica unknown location 1955?	Vernomanus brevicaulis Logansport, IN Aug. 1954	Vernomanus brevicaulis near Clinton, IN Oct. 1955
Vernomanus brevicaulis Danville, IL Sept. 1955	Vernomanus aquatica, Wabash River near Logansport, IN Oct. 1956	Vernomanus brevicaulis along the Wabash River near Lafayette, IN Aug. 1954
Vernomanus brevicaulis in early spring, unknown location, Mar. 1956