Gentianella impressinervia

Detailed description

Plants polycarpic, height in flower 160–600 mm. Caudex branched, 65–300 mm long, leaf scars conspicuous, stolons usually present. Root 2.9–4.5 mm diameter at stem base. Flowering stems terminal and lateral, 4–6 per plant, largest flowering stem 2.5–5.5 mm diameter at base, stem colour tinted crimson, brown, or bronze, lateral flowering stems erect, flowering stem leaves 2–7 pairs per stem, lowest pedicels from ½ up flowering stem or near apex of flowering stem. Rosette of leaves not distinct or distinct from flowering stem leaves; leaves elliptic or obovate, 18–61 mm long, 7.9–21.0 mm wide, green or tinted crimson below, or slightly bronze-tinted, glossy, flat or slightly V-shaped, recurved or not, with lateral veins impressed on upper leaf surface; leaf apex apiculate or rounded; petiole absent or indistinct, 3.5–5.5 mm wide at leaf base. Flowering stem leaves ovate or obovate as for rosette leaves but sessile and almost amplexicaul, c.19 × 12 mm. Pedicels 1-2 per leaf axil, 12–35 mm long, 1.1–1.4 mm diameter Flowers 6–42 per plant, 19–24 mm long, rarely female. Calyx 7.9–12.7 mm long, green, hairs at calyx–corolla fusion line present; lobes 6.6–9.4 × 2.9–3.7 mm wide at base, plane, apices acute, margins smooth, sinus hairs absent, sparse, or abundant. Corolla 1624 mm long; tube yellow or yellow-green, 4.6–7.2 mm long; lobes white with veins uncoloured, 11.3–18.1 × 7.5–12.5 mm, hairs below sinus present; nectary 1.2–2.2 mm from corolla base, dark yellow. Filaments 9.0–11.5 mm long from corolla base, 1.2–1.7 mm wide. Anthers 2.8–3.9 mm long, anther wall bluish purple, mouth yellow, extrorse at anthesis; pollen yellow. Stigma colourless. Ovules 44–84 per ovary, ovary yellow in maturity. Capsule 20–23 mm long.