| the discovery of three genetic races of the dwarf mistletoe arceuthobium americanum (viscaceae) provides insight into the evolution of parasitic angiosperms. | a population genetic approach was used to explore the evolutionary biology of the parasitic angiosperm arceuthobium americanum nutt. ex engelm. (viscaceae). arceuthobium americanum infects three principal hosts and has the most extensive geographical range of any north american dwarf mistletoe. based on the lack of apparent morphological and phenological differences between populations of a. americanum, past researchers have found no evidence for recognizing infraspecific taxa. in this study, mo ... | 2002 | 11918778 |