May-19, 1913 «>= > 49 
PSORALEA LINEARIFOLIA T. & G. 
Rare near Porcupine Peak; (Shannon county). 
XANTHOXALIS BUSHII Small. Wood sorrel, Oxalis 
Common in moist depressions; (Bennett county). 
CATHARTOLINUM COMPACTUM (A. Nelson) Small. Wild flax. 
Plentiful on hillsides; (Washington county). Lzzum com- 
pactum A. Nelson. 
RHUS CISMONTANA Greene. Scarlet sumac. 
Common on the hillsides to the eastward of the eastern 
edge of the Pine Ridge Reservation; (Bennett county). 
HYPERICUM MaAJuS (Gray) Britton. St. John’s wort. 
Abundant on La Creek; (Bennett county). 
NUTTALLIA STRICTA (Osterhout) Greene 
Common on sand hills and hillsides; (Washington county). 
ANOGRA LATIFOLIA Rydb. 
Common along La Creek; (Bennett county). 
OENOTHERA MURICATA L. Yellow evening primrose 
Abundant along Wounded Knee creek; (Shannon county). 
OENOTHERA RHOMBIPETALA Nutt. 
Quite numerous in the sand hills; (Bennett county). 
PACHYLOPHUS MACROGLOTTIS Rydb. Gumbo lily. 
Abundant in the bad lands on bare clay; (Washington 
county). 
AMMI MAJUS Walt. 
Rare on wet soil; (Washington county). ¢clzmn2zum cap- 
ellaceum (Michx.) Hollick. 
SUIDA STOLONIFERA RIPARIA Rydb. Dogwood, red osier. 
Frequent on banks of streams; (Washabaugh and Bennett 
counties). 
ACERATES VIRIDIFLORA LINEARIS Gray 
On sandy and dry prairies, fairly common; (Washabaugh 
county). 
CUSCUTA CUSPIDATA Engelm. ? Dodder. 
Rare, parasitic on Ambrosia and leguines; (Bennett county). 
