Abstract
A multivariate morphometric study of herbarium specimens of Solidago rigida confirmed that the species was divisible into three groups: a prairie race, a southeastern United States race, and a mid western – northeastern United States race. These groups are given subspecific rank as ssp. humilis, ssp. glabrata, and ssp. rigida, respectively, on the basis of morphological differences and their largely allopatric distributions. They are most easily distinguished on the basis of pubescence, phyllary, and disc corolla lobe traits. Twenty-seven new chromosome counts in two of the three subspecies are reported. Subspecies humilis is diploid (2n = 18); ssp. rigida is diploid in Oklahoma and tetraploid (2n = 36) over most of its range. Subspecies glabrata has been reported previously as diploid (four counts). The following new combinations are made: Solidago rigida ssp. glabrata and S. rigida ssp. humilis.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
