Morphological and Cytological Evidence for Introgression in Aster Acuminatus Michx. in the Southern Appalachians
Hill LM. 1976. Morphological and Cytological Evidence for Introgression in Aster Acuminatus Michx. in the Southern Appalachians. Castanea. 41(2):148-155
ABSTRACT: Morphological and cytological variation in Aster acuminatus Michx. was observed in populations located in the southern Appalachians. Results indicated that A. acuminatus in closed, shady habitats had morphological variation typical of the species, with normal meiosis and high pollen stainability. A. acuminatus in open, exposed habitats was more variable morphologically, with abortive meiotic figures and low pollen stainability. The variation was indicative of genetic con- tact with Aster nemoralis Ait., which is sympatric with A. acuminatus in the northeastern United States, but absent in the southern Appalachians.
- Type
- Journal Article
- Authors
- Hill, L
- Units
- BLRI
- Keywords
- APHN, Appalachian Highlands Network, Arnold Valley Overlook, Aster acuminatus, Asteraceae, BLRI, Blue Ridge Parkway, Oclemena acuminata, SER, Southeast Region, taxonomy, vascular plants