TABLE 1 in Isodon maoershanensis (Lamiaceae), a new species from Guangxi, South China

TABLE 1. Comparison of morphological characteristics between Isodon maoershanensis and the two most similar species. CharacterI. maoershanensisI. henryiI. megathyrsusLeavestriangular-ovate or rhomboid-ovate, 2–4×1.2–3.0 cm; Densely covered with short white stiff hairs and scattered glandular points above, dense red glandular points and sparsely stiff hairs along veins belowrhomboid-ovate or lanceolate, 2–6× 1.5–4cm; Dense strigose above, sparsely strigose below along veinsbroadly ovate, 3.5–7.5×2– 4.5 cm; puberulent on both sidesPetioles0.5–2.0 cm long, lightly furredUp to 4.0 cm long, slightly strigose0.5–5.0 cm long, upper with narrow wings, densely puberulentLateral veins3–4 pairs, clearly sunken above and erumpent at the back3–4 pairs, raised on both sides3–4 pairs, raised on both sidesBracteal leavesFoliate, with short petiolate, short stiff hairs and glandular pointsFoliate, shortly petiolate or barely sessileFoliate, barely sessileBractsOvate or broadly lanceolate, small, ca. 4 mm longLinear or lanceolate, small, 1–3 mm longLanceolate linear, small, ca. 1.5 mm longInflorescences8–20 cm long, consisting of cymes with 3–5 flowers6–15 cm long, consisting of cymes with 3–5 flowersbroad, up to 30 cm × 20 cm, consisting of cymes with 5–11 flowersCyme peduncles2–13 mm long, covered with short stiff hairs and glandular points1–2 mm long, glandular puberulent3–5 mm long, longest underside, tapering upward, dense glandular puberulentPedicels2–4 mm long, covered with short stiff hairs and glandular pointsCa. 5 mm long, glandular puberulent3–5 mm long, dense glandular piloseCalyxOuter with short stiff hairs and red glandular points, broadly funnel-shaped when flowering, ca. 2 mm long, conspicuously elongated to 4–5 mm when fruit; lobes 5, lobes to calyx 1/2 or lessOuter puberulent and glandular points, broad campanulate when flowering, ca. 3 mm long, elongated to ca. 6 mm when fruit; calyx lobes 5, sepal lobes to calyx 1/2Outer dense glandular points and puberulent, broad campanulate when flowering, 2.5–3 mm long; tubular campanulate when fruit, up to 7 mm long; calyx lobes 5, sepal lobes to calyx 1/2CorollaWhite or light purple, ca. 5 mm long, outer covered with short stiff hairs and red glandular pointsWhite or lilac with purplish points, ca. 7 mm long, pubescent and glandular points on the outsideBlue or bluish-purple, up to 9 mm long, pubescent and glandular pointsCorolla tubeCa. 5 mm long, covered with short stiff hairs on the outside, shallowly sacculate near baseCa. 3.5 mm long, shallowly sacculate above baseCa. 5 mm long and very shallow sacculate above baseCorolla limbupper lip flat, ca. 3 mm long, lower lip navicular, ca. 3 mm longupper lip outwardly reversed, 3 mm long, lower lip navicular, ca. 3.5 mm longupper lip outwardly reversed, ca. 3 mm long, lower lip navicular, ca. 4 mm long