Population Studies Among Sonoran Desert Species of Parmelia subg. Xanthoparmelia (Parmeliaceae)
Nash TH and Zavada M. 1977. Population Studies Among Sonoran Desert Species of Parmelia subg. Xanthoparmelia (Parmeliaceae). American Journal of Botany. 64(6):664-669
Species of Parmelia subg. Xanthoparmelia exhibit partial morphological convergence in a region of sympatry in the northern portion of the Sonoran Desert. Within the isidiate morph of the population, chemotypic variation is present. These chemotypes exhibit habitat selection among different rock substrates within a region of relatively uniform climate and topography. Partial habitat selection is also demonstrable for the chemotypes of the nonisidiate morph in the population. Other morphological characters are useful in segregating portions of the isidiate and nonisidiate morphs into chemically distinct groups that have previously been assumed to represent only chemotypic variation.
- Type
- Journal Article
- Authors
- Nash, Thomas; Zavada, M.
- Units
- SODN
- Keywords
- Ecology, Inventory and Monitoring (I&M), Plant Communities, Plant Studies