Lamourouxia jaliscana

Figure 8 A – C. Sub-shrubs up to 1.5 m tall, stems branched along the plant, probably reclining, woody, glabrescent non-glandular. Leaves opposite, petiolate, petioles up to 1.5 mm, narrowly lanceolate to linear-lanceolate, 50 – 80 × 6 – 10 mm, margin serrate, 10 – 22 teeth each side, teeth 0.5 – 1.5 mm long, apex acute very attenuate, base attenuate; possibly membranous, pubescent, non-glandular. Inflorescence a raceme, erect, pedicels thin, 5 – 8 mm long, one bract per flower. Bracts equal along inflorescence, sessile, linear to linear-lanceolate, 13.4 – 26.6 × 1.5 – 2.6 mm, margin dentate, 4 – 11 teeth per side, apex acute, base attenuate. Calyx campanulate without dots on the surface, 14 – 16 × 5 mm, four-lobed, lobes narrowly subulate, 10 – 12 × 2 – 3.7 mm, margin entire, apex acute, glandular-pubescent. Corolla tubular, 56 – 63 × 9 – 10, bilabiate, upper lip 14 – 27 mm long, lower lip 19.6 – 27 × 3.2 – 3.4 mm, apex three-lobed, lobes 4.3 – 9 × 0.7 – 1.6 mm; red, pubescent, non-glandular. Stamens exserted 2, filaments not seen, anthers 4.3 – 4.9 mm long. Style 55 – 65 mm long. Fruit a capsule, ovoid, 12 – 13 × 7 – 8 mm, glabrous. Seeds not seen.

Notes: — The species was searched in November 2019, but it was not found. The type locality is a remote site at the summit of one of the mountains surrounding the municipality of Talpa, Jalisco. The flowering season coincides with the hurricane season in the Pacific Ocean, where unpaved roads are considerably damaged by the rain making the access difficult. It is recommended the use of 4 × 4 vehicles or specialized equipment to carry out long botanical expeditions in quest of Lamourouxia jaliscana.