| Description: |
Sinningia sulphurea Chautems & D.B.O.S. Cardoso, sp. nov. (Fig. 4). Holotypus: BRAZIL. Bahia: Itaberaba, ARIE da Serra do Orobó, Fazenda Leão dos Brejos, 12°51'01"S 40°30'59"W, 398 m, 15. VII. 2006, Queiroz, Cardoso & Messias 12277 (HUEFS-110686!; iso-: G [G00412505]!). Sinningia sulphurea is morphologically related to S. barbata (Nees & Mart.) G. Nicholson, but differs by having numerous underground round tubers around 5 mm diam. (vs. a single tuberous base measuring 2–3 cm diam.), stem 15–32 cm tall (vs. 30–70 cm tall), crenate leaf margin (vs. serrate), pubescent calyx lobes (vs. gabrous), and yellow, tubular-campanulate corolla(vs. white, greenish or yellowish, tubular and strongly ventricose corolla). Herb 15–32 cm tall, usually terrestrial, underground storage system with numerous round tubers, c. 5 mm diam.; stem semi-prostrate or erect, usually unbranched, greenish, densely pubescent, internodes 3–6 cm long. Leaves 3–7 pairs, decussate, isophyllous; petiole 2.5–5 cm long, green on both sides, with eglandular trichomes; lamina elliptic, base attenuate, apex obtuse, margin crenate, adaxially puberulous, abaxially shortly pubescent, 6–8 pairs of veins. Inflorescence frondose, composed of cymes composed of 1–3 flowers in the axils of the 1–4 upper leaf pairs. Flowers subtended on erect pedicels, 2.2–3 cm long, green, pubescent. Calyx campanulate, shortly fused at base, lobes 2.2–2.7 × 0.9–1.1 cm, broadly ovate, broadly cordate at base and winged at their junction, acuminate at apex, green, pubescent adaxially. Corolla obliquely inserted in the calyx, tubular-campanulate, ventricose, 3.5–4.9 cm long, outside yellow and pubescent, reddish trichomes toward the base of the tube, dorsally forming 2 longitudinal grooves, throat yellow with fine vinaceous streaks ventrally, lobes plain yellow, ventral one with diffuse vinaceous streaks at base. Stamens 4, included, filaments 2.2–2.8 cm long, anthers coherent by their apex and side, forming a rectangle, pollen white, nectary formed by 2 dorsal separate ... |