149 
NYCTAGINACEAE, four-o’clock family 
BOERHAAVIA, spiderling 
+Boerhaavia erecta L., p. 630 
MIRABILIS, umbrellawort, four-o’clock 
Mirabilis albida (Walter) Heimerl, white four-o’clock, pale 
umbrellawort, p. 628 
M. hirsuta (Pursh) MacMillan, hairy four-o’clock, p. 628 
M. linearis (Pursh) Heimerl, narrow-leaved four-o’clock, narrow- 
leaved umbrellawort, p. 628 
M. nyctaginea (Michaux) Mac Millan, wild four-o’clock, 
heart-leaved umbrellawort, p. 6 
NYMPHAEACEAE, water lily family 
(see also CABOMBACEAE, NELUMBONACEAE) 
BRASENIA (see CABOMBACEAE) 
CABOMBA (see CABOMBACEAE) 
NELUMBO (see NELUMBONACEAE) 
NUPHAR, cowlily, spatterdock 
yellow pond lily, yellow water lily 
Nuphar lutea (L.) Sibth. & Smith (note that the question of 
species limits in this genus is controversial; if American 
plants are held as distinct from the European N. lutea 
sensu stricto, then both of our taxa would best be 
treated as subspecies of N. advena (Sol.) Aiton f.; 
however, the combination ssp. ozarkana has not been 
formally transferred to the latter species), p. 665 
S: Steyermark G: Great Plains Flora M: Mohlenbrock 
