Table. Morphological comparison between Impatiens subfalcata, I. attopeuensis and I. notoptera in IMPATIENS SUBFALCATA (BALSAMINACEAE), A NEW SPECIES FROM LAOS

Table. Morphological comparison between Impatiens subfalcata, I. attopeuensis and I. notoptera CharacterI. subfalcataI. attopeuensis aI. notoptera aLamina shapeLanceolate, oblanceolate, slightly falcateOvate to ovate-lanceolate, symmetricalOvate, symmetricalLamina length1.7–10.5 cm3–5 cm4–6 cmLength-to-width ratio of lamina4.6–7.62.1–2.81.8–2.4No. of secondary veins8–10 pairs5–6(–7) pairs6–8 pairsPetiole lengthSubsessile to 0.2 cm0.5–2 cm2–4 cmLateral sepals2, ovate-triangular, 5 × 2.8 mm, acute to shortly acuminate at apex2, ovate-circular, 7 × 7 mm, acute at apex2, ovate-circular, c.5 × 3 mm, cuspidate at apexLower sepalNavicular, 5–5.5 mm longNavicular, 12 mm longNavicular, 4 mm longSpur length2.1–2.6 cm4–7 cm2–2.5 cmDorsal petalTransversely broadly elliptic, 6–7 mm longBroadly obovate, 12–14 mm longBroadly obovate-circular, c.8 mm longLateral petalsUnited, broadly obovate, 10–12 mm longUnited, broadly obovate, 5 mm longUnited, broadly obovate, c.6 mm longSeedsEllipsoid, 2–2.8 mm long, piloseEllipsoid, c.2.2 mm long, short hairyOblong to obovoid, c.3 mm, glabrous, granulate a The measurements of Impatiens attopeuensis and I. notoptera are based on the published protologues (Hooker, 1908 and 1909, respectively), digitised herbarium specimens available on the web (e.g. JSTOR Global Plants, continuously updated), and our specimens of I. attopeuensis (i.e. Souladeth et al. L2573, L3222 and L3974 [FOF, KAG]).