Suffruticose, perennial herb, 0.2-0.6 m high, straggling, minutely glandular-pubescent. Leaves: lower ones often attenuate at base, oblong-lanceolate, upper sessile; acute or subacute, distantly callose-denticulate or quite entire. Ray florets deep bright purple on upper surface, dull purple beneath. Disc florets purple. Flowering time Aug.-Feb.