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Perennial herb, 0.2-0.4 m high; stems erect, taproot woody; almost glabrous, orange-red gland-dotted. Leaves shortly petiolate, pinnatifid or pinnatisect, occasionally simple, linear-oblong to oblong-lanceolate, 25-80 x 6-20 mm, margins finely crenate-dentate; sparingly pubescent on nerves below and gland-dotted. Inflorescence simple; verticillasters several to many, spaced below, denser above, each 6-8-flowered. Flowers pale blue or mauve. Calyx 4-5 mm long; hispidulous, gland-dotted. Corolla: tube ± 7 mm long; upper lip 4 mm long; lower lip slightly longer than the upper. Flowering time Oct.-Apr.
Perennial herb, 200-400 mm high. Stems almost glabrous, with few, scattered, eglandular hairs. Leaves with blade linear-oblong to narrowly ovate-oblong, 25-80 x 6-20 mm, margins pinnatifid or pinnatisect, occasionally entire. Flowers: verticils 6-8-flowered; fruiting calyces 4-7 mm long, upper lip 2-or 3-toothed, spreading, gland dotted, minutely hispidulous; upper lip of corolla straight, 7-14 mm long; corolla pale blue or mauve; Oct.-Apr.
Like S. runcinata but leaves often pinnatifid or pinnatisect with narrow segments and stems almost glabrous.
