Indian paintbrush, absent from many prairie remnants in Arkansas, behaves as a biennial in certain central Arkansas prairies, growing as a small rosette one season and flowering the next. It is known to be an indiscriminate root parasite. Field sowings were made in October, March and June. Annual change in population size was monitored for one of these sowings. Laboratory studies of germination were conducted to investigate the effects of light, temperature, water potential, and host species. Haustorial connections to host roots were examined. Based on these studies, a strategy for establishing the species in prairie was developed.
Wright, Robert D.
"Some Studies on Introducing Castilleja coccinea, Indian Paintbrush, Into Prairie Vegetation,"
Journal of the Arkansas Academy of Science: Vol. 38
, Article 22.
Available at: http://scholarworks.uark.edu/jaas/vol38/iss1/22