Recently an unidentified species of Jacquemontia was located in Taiwan by Dr Yang Sheng Zehn, who asked my help to identify it. We co-authored the account of Convolvulaceae in the Flora of Taiwan, edit. 2, and we have never seen this species before. I believe this is an adventive, newly discovered and documented from Taiwan and seek your help to identify it. Some photos of the living plants in habitat are below; the high-resolution image files are attached to this blog post. The locality data for the population are as follows:
George Staples's blog
I am concerned about the correct epithet for the Brazilian plant we are looking into, so did some checking for the protologues for 2 names above. I was able to track down the original publication for Ipomoea flammea Nees [in Flora 4: 301. 1821] and that name was published on 21 May 1821. Then in a subsequent article [Flora 4: 329] dated 7 June 1821, Nees equated "36. Convolvulus igneus Schr. ist Ipomoea stammea m." [this has to be a typo for 'flammea'].