Species Identification & Floral Diagnostics

Corolla 15–25 mm across, strongly zygomorphic. The upper two petals typically display rich deep violet to lilac coloration; the lateral pair are paler with subtle bearded throats; the lower basal petal is distinctively broad, white or pale cream with deep violet nectar veins guiding insect visitors toward a prominent yellow eye.

Spur measures 3–5.5 mm in length, obtuse, slightly curved upward, extending beyond the calycine appendages. Sepals are lanceolate, obtuse to acute, with small denticulate basal appendages.

5 stamens closely appressed to the pistil, the lower two bearing dorsal appendages extending into the nectar spur. Stigma is capitate, bent anteriorly with a receptive orifice shielded from direct torrential rain.

Leaves are 8–22 mm long, spatulate to obovate, conspicuously thickened (hence *crassiuscula*, meaning somewhat thickened), fleshy, glabrous or sparsely puberulent. Leaf margins are entire or weakly crenate with a distinct petiole exceeding the blade length.

Features a deeply penetrating vertical taproot accompanied by slender, highly flexible subterranean stoloniferous branches that wind between subterranean rocks, allowing vegetative re-emergence if gravel layers slide during solifluction events.

Dwarf perennial, forming low-lying rosettes 3 to 7 cm in height. Forms compact cushions or loose scree clusters spreading 10 to 30 cm across rock fissures.