"Morphological characters";"H. konhanungensis";"H. shenzhenensis";"H. shiuyingiae";"H. yangchunensis" "Plant height, including the inflorescences (cm)";15–25;20–40;15–35;30–39 Stem;"terete or subterete, 8–18 cm long";"terete or subterete,1–2 cm long";"slightly tetragonal, 10–22 cm long";"tetragonal or subterete, 15–30 cm long" "Leaf arrangement";"evenly spaced along the stem";"fascicled on short rosette-like stem";"evenly spaced along the stem";"evenly spaced along the stem" "petiole length (mm)";4–6;0.5;5–10;15–20 "blade shape and size (cm)";"obovate to oval, 6–10 × 2–4";"elliptic, oblong-elliptic or obovate, 8.5–15 × 5–9";"broadl, lanceolate or obovate-lanceolate, 2–19 × 1.4–8";"narrowly elliptic, oblanceolate or elliptic-oblong, 3–12 × 1–4.5" "Stipule shape and size (mm)";"broadly ovate or deltoid, apex cuspidate, margin entire, 2.5–3 × 5–6";"triangular, apex acute, margin shortly hairy, 3–5 × 5–10";"triangular, apex acute, margin dense trichomes, 4–8 × 5–10";"triangular, apex and margin lacerate or deeply divided into several linear lobes, ca. 16 × 8" Inflorescence;"Longistylous flowers lax or not congested into a head-like inflorescence";"Longistylous flowers lax or not congested into a head-like inflorescence";"Longistylous flowers congested into a head-like inflorescence";"Longistylous flowers congested into cymose or capitate inflorescence" "Peduncle length (cm)";2–4;10–18;10;3–4 "Lowest floral bracts";"suborbicular or broadly oval, 2–2.5 × 1.5–2 cm";"subovate, 2.5–3 × 1.8–2 cm or sometimes larger";"ovate to lanceolate, 0.6–2.5 × 0.2–1 cm";"ovate, ca. 1.5 × 0.5–0.6 cm" "Calyx lobes";"ovate or nearly oval, 1.7–2.2 × 0.8–1.4 mm";"subulate, ca. 1.5 mm long";"subulate, ca. 3 mm long";unknown Corolla "outer colour";"bluish purple";white;"purplish white";unknown "tube dimension and shape";"6–7 × 1–1.5 mm, slightly enlarged both ends";"ca.3 × 1.5–1.8 mm, slightly narrower near mouth";"tube ca. 4.5 × 2–2.5 mm, enlarged at mouth";unknown "Stamens of long-styled flowers";"inserted in lower ¼ (or near the base) of corolla tube";"inserted in upper ¼ (or near the throat) of corolla tube";"inserted in ½ (or middle) of corolla tube";unknown "Stamens of short-styled flowers";"inserted in the upper ¼ (or near the throat) of corolla tube;";"inserted near the throat of corolla tube;";"inserted near base of corolla tube;";unknown "filaments ca. 0.2 mm long, not exserted beyond corolla mouth";"filaments ca. 0.8 mm long, exserted beyond corolla mouth";"filaments ca. 0.3 mm long, not exserted beyond corolla mouth" "Persistent calyx lobes on fruits";"ovate or nearly oval, 1.8–2.3 × 0.8–1.5 mm, unveined";"narrowly triangular or subulate, 1.2–2 × 0.5–0.7 mm, unveined";"narrowly triangular or subulate, 3–4 × ca.1 mm, unveined";"lanceolate, 3–6 × 1.2–3 mm, veined"