B. undulata

Curtis's botanical magazine. 1827 v. 54 = ser. 2: v. 1 http://www.biodiversitylibrary.org/item/14338 Begonia undulata –Stem erect, turgid below, tapering upwards, annular; when young, slightly hispid, green, and having numerous small oblong white spots; when older, glabrous, and of a reddish grey color, branched; branches axillary and alternate. Leaves petioled, alternate, distichous, unequally cordate, smooth and shining, undulate, acuminate, of a full green on the upper surface, paler and minutely dotted below, three inches long, the edges occasionally reddish, especially when young and callous, quite entire, but having a dot like an obsolete tooth at the termination of each vein; petioles hispid, especially on the older branches, a quarter of an inch long. Stipules varying in size and shape, pointed, transparent, reddish, and spotted like the stem caducous. Panicle supported on peduncle about half the length of the leaves, dichotomous, smooth and shining. Bracts unequal shorter than the pedicel pellucid, colorless. Flowers white : Corolla of the male of four petals, of which the two outer are largest) cordate ; that of the female of five petals, the largest about one-third of the length of the wings of the capsule : wings of the capsule rounded, tapering towards the pedicel. Stigmata convolute, pubescent, with two prominent angles on each., yellow. Stamens numerous, yellow. Seeds very numerous, covering the projecting wing of their green receptacles. Graham. Communicated with the above description by Professor Graham from the stove of the Botanic Garden at Edinburgh. That gentleman received it., with the name here adopted from Mr. Otto, of Berlin, with the information, that it was a native of Brazil. It seems to be quite distinct from any hitherto published.

• Classification: Species
• Plant Type: Cane-like
• Botanical Section: Gaerdtia
• Origin: America, Brazil
• Originator: Schott in Sprengel, Syst. Veg.
• Date of Origin: 1827