Reseda luteola

Plants annual or biennial, (20–)40–100(–150) cm, glabrous. Stems erect, simple or branched. Leaves (cauline subsessile distally); blade oblong-spatulate, 5–10(–15) × 0.5–2 cm, margins entire or subentire (flat or crispate), surfaces glabrous or, sometimes, with 1–2 conical glands basally. Racemes 10–50 cm; bracts persistent, lanceolate-attenuate, 2–3.5 mm (4–5 mm in fruit). Pedicels 1–3 mm. Flowers: sepals persistent, 4, not reflexed in fruit, lanceolate-ovate, 1–2.5 mm; petals 4, yellowish, 2–4 mm, rounded-clawed, adaxial ones irregularly lobed; stamens 20–40; filaments persistent, 2–3 mm, glabrous; intrastaminal nectary-discs glabrous; anthers 0.5–0.6 mm; placenta forked distally. Capsules erect, 3-carpelled, ovoid to subglobose, 3–5 × 4–6 mm, apically 3-toothed, usually glabrous. Seeds 0.6–1 mm, glossy, smooth. 2n = 24, 26.

Reseda Luteola

Reseda luteola

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