attached at the upper two thirds or three quarters of the corolla, the lower posterior pair with long filaments (circa 12 mm long), attached near the basal quarter of the corolla, and with bigger anthers (2.5 x 1.8 mm); pollen grains oblate-sphaeroidal, medium-sized; nectary annular, thick. Seed capsules globose, ovate, circa 5mm long, bearing 60–80 seeds. Seeds 0.6–0.9–mm long, cuboidal-elongated, testa reticulate. The blooms can appear nearly all year in mild-winter areas, but the heaviest flowering is from February to July. The corolla has been described as 'essentially upside-down' (due to the twisted nature of the corolla tube - that gives the genus its name) by botanists from the Natural History Museum, London. Influence of flower colour and nectar secretion on pollination Streptosolen jamesonii flowers profusely over a period of several weeks and produces nectar in abundance. Nectar secretion commences around the time the flower opens and continues for about three days. Anther dehiscence coincides with the beginning of [ nectar ] secretion. As the flower matures, its colour changes from yellow through orange to scarlet. The age of the flower can be estimated quite accurately from the colour and diameter of the flower [ corolla ]...Nectar accumulates in the corolla tube. - R. W. Shuel Shuel described a gradual color change from yellow through orange to scarlet as flowers mature, allowing the pollinator to accurately estimate the age and possible nectar content of the flower. - Martin von Arx Taxonomy The genus name Streptosolen is a compound of the Greek στρεπτός (streptos) 'twisted' and σολεν (solen) 'tube' - from the somewhat twisted structure of the corolla of the flower - hence "twisted-tube(d flower)". The specific name jamesonii commemorates Scottish-Ecuadorian botanist William Jameson, Professor of Chemistry and Botany at the Universidad Central del Ecuador, Quito, compiler of a pioneering (but, sadly, unfinished - due to his demise) Flora of Ecuador. The binomial Streptosolen jamesonii was published by English botanist John Miers in the Journal of Natural History (entitled the Annals and Magazine of Natural History from 1841 until 1967) in the year 1850. Horticultural merit In the UK this plant has gained the Royal Horticultural Society's Award of Garden Merit. With a minimum temperature of , this plant must be overwintered indoors in frost-prone areas. For the opportunity of figuring this very interesting plant we are indebted to Messrs. Veitch and Son, by whom it was lately introduced, and in