Disa bolusiana is a tuberous perennial growing two to five leaves at ground level, usually a little longer than 5 cm, and a few more leaves up the stem. The nearly erect leaves are narrowly oblong to ovate, tapering to acute tips. At the leaf base it broadens, clasping the stem.
The slender, erect flowering stems grow annually to heights of up to 30 cm, bearing two to twenty five flowers (Liltved and Johnson, 2012).