The Carolina -- not Virginia -- jessamine, gelsemium
sempervirens (properly speaking not a jessamine at all) has yellow blossoms.
That compound is only found in nature in five forms, all of which are associated with the highly toxic Gelsemium
plant, which grows only in China.
Tenders are invited for Supply of medicine Fluoricum acidum,Formica rufa, Ficus religiosa, Gelsemium
sempervirens, Glonoine,Graphites, Guaiacum, Gun powder, Hamamelis virginica, Helleborus niger,Helpar sulphuris calcareum,Hydrastis canadensis,Hydrocotyle asiatica, Hyoscyamus niger, Hypericum perforatum, Hecla lava, Ignatia amara, Iodium, Ipecacuanha, Iris versicolor,
Remedies: Argentum Metallicum, Borax, Bovista, Calcarea Bromata, Cannabis Indica, Caulophyllum, Crocus Sativa Digitalis, Gelsemium
, Kali Bichromicum, Kali Bromatum, Kali Sulphuricum, Lac Caninum, Lac Delphinum, Natrum Sulphuricum, Palladium, Pulsatilla, Sabadilla, Sanguinaria, Silica , Thuja.
0 2 Garryaceae Garry'a Garryales 1 0 0 -- Gelsemiaceae Gelsemium
Gentianales 0 ?
Indeed, many herbs are restricted to prescription only, for example lobelia, comfrey, gelsemium
Many more herbs are listed on the different schedules including Gelsemium
, Convallaria, Ammi visnaga, Rauwolfia, Lobelia, Arnica and of course Digitalis and Ephedra.
I use remedies such as Ruta grav, which helps treat sprained ligaments, Gelsemium
for pre-race jitters, Arnica for bruising and Bellis perennis to treat exertion.
Tremors, debility, drowsiness, vertigo, nausea, neck pain, visual disturbances and ptosis of the upper eyelids may be seen here.
Working on multiple floral visitors, Adler and Irwin  observed that Xylocopa, Osmia and Habropoda carried the most Gelsemium
sempervirens (Carolina jessamine; Loganiaceae) pollen, followed by Bombus and Apis.
In Ellingwood's Therapeutist of 1908, it is reported that gelsiminine from Gelsemium
sempervirens (yellow jasmine) 'will check the hot flashes that occur during or after the menopause in nervous, plethoric or relaxed women at a dose of 1/250 grain' (Dougherty-Trexler 1908) and elsewhere a single dose of 'ten drops of specific gelsemium
, if necessary followed up by 3 drop doses every hour is excellent for the hot flashes that are apt to occur during the menopause' (Henschen 1908).
Studying foraging preferences in the blueberry bee, Habropoda laboriosa, Pascarella (29) used the field station as rural site in a comparative study looking at foraging preferences for various species of Vaccinium, Gelsemium
and Azalea, in rural, suburban, and urban habitats.