1783 tr. C. Linnaeus (1785) I. 311 Leaves subvillous, petioles equal.
1811 W. Wade 247 Leaves somewhat entire ovate, acute, upper surface subvillous; underneath most densely woolly.
1934 19 41 Above the ring, pruinose or subvillous, white or pale clear yellow when young.
2005 94 30/1 The indumentum on the leafy twigs and the base of the petiole can be subvillous.