It is easily confused with G. wakkerstroomianum, and mixed collections are not infrequent, but G. schlechteri is very glandular whereas glandular hairs are rarely present in G. wakkerstroomianum, which is further distinguished by its deeply notched (not nearly entire) petals. It is also commonly confused with G. ornithopodon and G. flanaganii, which have similar petals, but differently cut leaves and mostly different indumentum.
Diffuse perennial herb, stems straggling, up to elm long, loosely branched, with short fine ± retrorse hairs as well as long spreading gland-tipped ones. Stipules deeply dissected, segments linear-acuminate. Leaves with petioles up to ±180 mm long, diminishing upwards, uppermost leaves subsessile, clad in long spreading glandular hairs; blade up to ±60 mm in diam., digitately 5-lobed to within ±4-10 mm of the base (ratio 2-5:1 measured on the median lobe), lobes elliptic in outline, lobed and sparingly toothed, thinly ± appressed hairy above, long spreading hairs below, often gland-tipped. Peduncles opposite the upper leaves and not always exceeding them, usually 2-flowered, with a unilateral band of fine ± retrorse hairs as well as evenly distributed long (often exceeding 1 mm) spreading gland-tipped hairs. Pedicels 10-40 mm long, hairy as the peduncles. Sepals 4.5-6 x 2-3 mm, pilose with long spreading gland-tipped hairs. Petals ±9-12 x 4-7 mm, obovate, entire or shallowly notched, white fading to pink, or white veined pink, or rosy pink. Rostrum pilose with spreading gland-tipped hairs.
Perennial herb. Stems straggling, up to ± 1 m long. Leaves with blade up to 60 mm wide, digitately 5-lobed, lobes elliptic in outline, hairy on lower surface, but not with matted white hairs between veins; petioles up to 180 mm long, diminishing upwards, uppermost leaves subsessile. Flowers: inflorescence usually 2-flowered, peduncles opposite with a unilateral band of fine retrorse and spreading gland-tipped hairs; pedicels up to 40 mm long; petals obovate, 9-12 x 4-7 mm, margins entire or shallowly notched, white, fading to pink, or white with pink or rosy pink venation; Dec.-Apr.