Packera insulae-regalis (Asteraceae, Senecioneae), a new species endemic to Isle Royale, Michigan, U.S.A
Packera insulae-regalis (Asteraceae, Senecioneae) is a new species that is only known from one population occurring near the summit of Mount Franklin on Isle Royale, Michigan, U.S.A. It resembles both P. paupercula and P. indecora but is hexaploid, whereas the former has diploid and tetraploid popul...
Saved in:
Published in | Brittonia Vol. 63; no. 3; pp. 343 - 354 |
---|---|
Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
New York
New York Botanical Garden and Springer
01.09.2011
Springer-Verlag |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | Packera insulae-regalis (Asteraceae, Senecioneae) is a new species that is only known from one population occurring near the summit of Mount Franklin on Isle Royale, Michigan, U.S.A. It resembles both P. paupercula and P. indecora but is hexaploid, whereas the former has diploid and tetraploid populations and the latter is octoploid around the western Great Lakes. Whereas most species of Packera are self-incompatible (as is P. paupercula) and a few are self-compatible (as is P. indecora), P. insulae-regalis is unique in the genus in being partially self-compatible, as far as is known. Its origin postglacially by hybridization between these two species is hypothesized. |
---|---|
ISSN: | 0007-196X 1938-436X |
DOI: | 10.1007/s12228-010-9177-6 |