Botanical name: Rungia pectinata Family: Acanthaceae (Barleria family)
Synonyms: R. parviflora var. pectinata, R. parviflora var. muralis, Justicia pectinata
Comb Rungia is a small annual herb, abundantly found on rocky surfaces. The species name pectinata means comb-like, probably referring to the resemblance of the flower-spike to a comb. Cylindrical stems are weak, 10-20 cm long. Oppositely arranged leaves, 1-3 cm, are oblong-lanceolate, sharp-tipped. Tiny violet-blue flowers are about 3-4 mm, and occur in spikes at the end of branches, or in leaf axils. Flower-spikes are 0.5-2.5 cm long, with sharp-tipped bracts arranged in 2 rows, like a comb. Flower is 2-lipped with tube narrow. Stamens 2, filaments short. Flowering: November-December.
Identification credit: Dinesh Valke
The flower labeled Comb Rungia is ...