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1
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Habit
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Bushy shrub, 0.75–2 m high, branches stout in stray clumps or gregarious, glabrous, erect, rigid, quadrangular; nodes prominent, sparsely lenticellate, usually with light purplish tinge, usually angular or quadrangular upwards. Stem glabrous to sparsely pubescent, usually only so in the grooves and on nodes; lenticels and leaf scars sometimes prominent (Venu 2006; Singh and Arigela 2019; Carine et al. 2004; Augustine et al. 2017).
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2
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Leaves
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Leaves elliptic-ovate, 2.5–8 × 1.5–4 cm, acute at base, crenate-serrate at margin, apex very short acuminate; coriaceous, scabrid above, white-villous between veins beneath; veins 4- 10 pairs, both primary and secondary veins prominent on abaxial surface, somewhat less so on adaxial surface; petiole 0–5.4 mm long, glabrous or with stout tapering hairs, especially along margins, symmetrical; margins subentire to prominently serrate; abaxial surface sparsely to densely covered with a white farinose indumentum, adaxial surface glabrous or sparsely covered with stout tapering hairs (Venu 2006; Singh and Arigela 2019; Carine et al. 2004; Augustine et al. 2017).
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3
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Inflorescence
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The inflorescence spike branched or unbranched with many flowers. Spikes in upper axils and terminal, 3–10 cm long, uninterrupted, sometimes branched, white tomentose, subtended by leafy bracts;
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4
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Bract
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Bracts 1–1.5 cm long, elliptic-ovate, white villous, midrib not prominent.
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5
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Bracteole
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Lanceolate, 10 mm long, shorter than calyx, floccose at margin and middle, midrib not prominent.
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6
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Calyx
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Lobes 10–14 mm long, divided almost half from the base, floccose-villous, linear-lanceolate (Singh and Arigela 2019).
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7
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Corolla
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Corolla 2–3 cm long, somewhat campanulate, pale blue or pale lilac or mauve, nerves darker, pubescent outside, hairy inside at nectar guide area; lobes 5, orbicular or suborbicular, upper margin undulate.
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8
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Androecium
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Staminal filaments not grooved, pilose hispid.
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9
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Pollen
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Ellipsoidal, 60–86 × 40–53 μm, 3-zonoporate pseudocolpi 5 in each mesocolpium, ridges 2.19 μm broad
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10
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Gynoecium
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Ovary hairy at the apex, style 15 mm long, swollen areas absent.
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11
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Fruits
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Capsules 1–2 cm long, narrowly ellipsoid; seeds 4, 1.5–2 mm across, orbicular, brownish, flattened (Augustine et al. 2017).
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