Pyrrolizidine alkaloids from Cryptantha species
Gc-ms Determination of Pyrrolizidine Alkaloids in Four Senecio Species
Pyrrolizidine alkaloid chemosystematics in Amsinckia
The reproductive attributes of an endangered plant as compared to a weedy congener
Pyrrolizidine alkaloids in overwintering monarch butterflies (Danaus plexippus) from mexico
North American populations of the monarch butterfly,Danaus plexippus, have been found to contain pyrrolizidine alkaloids and their N-oxides. Analytical methods (TLC, GC, and GC/MS) have been…
Cryptantha nevadensis var. rigida elevated to species with a new name, C. juniperensis
A replacement name, Cryptantha juniperensis, is proposed for Cryptantha nevadensis because the name C. rigida was unavailable, due to its previous use for the South American Cryptantha rigida (Phil.).
Recognition of Two Species in Eremocarya (Boraginaceae): Evidence From Fornix Bodies, Nutlets, Corolla Size, and Biogeography
Evidence is presented that these two varieties of Eremocarya are distinct in a number of features and that they should be treated as separate species: E Remocarya lepida and E. micrantha.
Pyrrolizidine alkaloids from Amsinckia
Typification of the name Johnstonella (Boraginaceae)
The genus Johnstonella Brand was published in 1925, as a segregate genus of Cryptantha (Boraginaceae) but has generally not been accepted by taxonomists, it has recently been resurrected based on molecular phylogenetic studies.
Trichome morphology relates to taxonomic diversity in Monardella (Lamiaceae) in the lower Snake River Watershed of Idaho and Oregon, USA: Taxonomic studies in Monardella (Lamiaceae) VI
- M. Elvin, R. B. Kelley, B. Drew
- Environmental Science, BiologyJournal of the Torrey Botanical Society
- 23 October 2019
Variation in trichome morphology within Monardella is a useful character to differentiate taxa and resolve taxonomic ambiguities, being comparable in importance totrichome variation in other plant families and genera.