1975/05/01 by Loran C. Anderson, Jessica B. Creech · 1 citation
Agricultural and Biological Sciences · Biochemistry, Genetics and Molecular Biology · #Plant Taxonomy and Phylogenetics #Botanical Research and Chemistry #Sesquiterpenes and Asteraceae Studies #Biology #Asteraceae #Botany #Solidago canadensis #Anatomy #Invasive species
paper · doi:10.2307/2441956
openalex publication_date 1975/05/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/26
Leaf anatomy of 63 taxa is investigated to elucidate generic relationships among Brachychaeta, Brintonia, Chrysoma, Euthamia, Gundlachia, Oligoneuron, Oreochrysum, Petradoria, and Solidago. All these genera have been included at one time or another within Solidago. Aster ptarmicoides is also studied because it hybridizes with some species of Solidago (sens. str.). Qualitative and quantitative differences in mesophyll, storage parenchyma, secretory apparatus, bundle sheath extensions, and midvein structure allow rather precise grouping of the taxa. Brachychaeta, Brintonia, Oligoneuron, Oreochrysum, and Aster ptarmicoides should be considered as constituents of Solidago. They all have bundle sheath extensions and little or no water storage parenchyma. In Solidago secretory cavities, when present, are shaped and positioned differently from those in Euthamia. The absence of bundle sheath extensions and various combinations of other anatomical features suggest that Chrysoma, Euthamia, Gundlachia, and Petradoria are generically distinct from one another and from Solidago.