蓝紫色
The corolla is blue-purple, 4.5-6 mm long, with a short tube nearly equaling the calyx, and a limb diameter of 4-6 mm. The lobes are nearly square or slightly inverted-ovate to elliptic, 2-lobed at the apex.
It flowers in July.
Usually 2-3 bracts, lanceolate to narrowly ovate, 1.5-3 mm long, often purplish-black.