@ARTICLE{TreeBASE2Ref18136, author = {Dieter Wilken and Ronald L. Hartman}, title = {A revision of the Ipomopsis spicata complex (Polemoniaceae).}, year = {1991}, keywords = {}, doi = {}, url = {}, pmid = {}, journal = {Systematic Botany}, volume = {16}, number = {}, pages = {143--161}, abstract = {A cladistic analysis indicates that the Ipomopsis spicata complex is monophyletic, related as a sister group to I. congesta in sect. Microgilia, and is characterized by regional differentiation most likely associated with climatic and topographic changes that occurred during the late Pliocene and Pleistocene. The cladogram provides evidence for the independent evolution of alpine, sub-alpine, and lowland races in the Rocky Mountains and the eastern perimeter of the Great Basin, correlated with a progressive change in inflorescence architecture, trichome distribution, and floral morphology. Based on morphological studies and examination of all type specimens, a taxonomic revision is proposed that summarizes morphological, geographical, and cladistic patterns within the complex. We recognize 1. spicata as composed of five principal geographic races treated as: subsp. spicata, subsp. capitata, subsp. orchidacea (comb. nov.), subsp. robruthii (subsp. nov.), and subsp. tridactyla (comb. nov.). Subspecies orchidacea includes var. orchidacea and var. cephaloidea (comb. nov.), which differ in ecological distribution and inflorescence architecture but intergrade in parts of their sympatry. Subspecies robruthii is described from the Absaroka Range of northwestern Wyoming.} }

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