A recently described taxon, closely related to R. nuttallii but with a green lower leaf surface and a less bullate upper leaf surface.  It is reported to grow with nuttallii in the wild but can be distinguished by its “distinctive appearance.”  This species where it occurs in a wide variety of habitats from 9,000 to 12,000 ft. should have large funnel-shaped fragrant flowers of white-flushed yellow or rose and smooth peeling red-brown bark.  In my opinion, it seems to be very similar in appearance to nuttallii (bearing in mind the above mention distinctions) and the status of this taxon currently remains uncertain.  Known only from SE Tibet where it occurs as an epiphyte and on cliffs and rocks from 6,500 to 7,500 ft.

2000sd196  KR#6026:RSBG  (+25\R2\7).  Our first offering of this newly described species.  These are from seed collected wild by Keith Rushforth at 6,600 ft. in the Rong Chu valley, SE Tibet.

180sd2003  A close relative of the large-flowered maddenia nuttallii, this differs in its less bullate upper leaf surface and green lower leaf surface. Similar large fragrant flowers and smooth peeling bark. Grown from seed collected wild at 7,400 ft. in SE Tibet. Requires excellent drainage.