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Hypericum elongatum var. elongatum
Subsection: StenadenumSpecies: Hypericum elongatum
Perennial herb, 0.15–0.5 m tall, usually glabrous, erect, not branching below inflorescence, with sterile shoots prostrate to ascending. Stems not glaucous, eglandular or rarely with a few amber dots towards base, not prominent; internodes 20–50 mm, usually exceeding leaves. Leaves sessile, spreading, ± glaucous, glabrous or rarely finely undulate-papillose above; lamina (main stem) 8–32 × 1–4.5(–6) mm, linear to linear-lanceolate or narrowly elliptic, apex rounded to shortly apiculate, margin usually ± revolute, base narrowly to broadly cuneate, 1-veined or with up to 3 pairs of lateral branches, with laminar glands pale, small, numerous, marginal glands pale, dense; lamina (axillary and sterile shoots) smaller, narrower, apex mucronate to apiculate, more often papillose above, often fascicled. Inflorescence ∞-flowered, from 3–9 nodes, narrowly cylindric to rarely narrowly pyramidal, rather lax, 60–250 mm long, with lateral cymules 1-3(5)-flowered, without or with up to 3 flowering branches below; bracts and bracteoles narrowly triangular-ovate to lanceolate, without black glands. Flowers 15–30 mm in diam., with petals reflexed after flowering; buds broadly ellipsoid to globose. Sepals unequal, free or basally united, imbricate, (2)3–5 × 1–2.5 mm, broadly ovate or broadly oblong to elliptic or lanceolate or narrowly oblong, rounded to obtuse or acute, sometimes mucronate; veins 3–5, becoming prominent; margin entire, eglandular in all sepals of one flower or some with ± irregular sessile elliptic black glands; laminar glands pale, linear and punctiform. Petals deep to golden yellow, very rarely red-tinged or red-veined, 12–18 × 4–8 mm, c. 4 × sepals, obovate to oblanceolate, unguiculate, rounded, distally black-glandular-ciliate; laminar glands pale, punctiform to shortly striiform. Stamens 40–60, longest 8–10 mm; filaments very rarely red-tinged. Ovary 3–4 × 1.5–2 mm, narrowly pyramidal-ovoid to ovoid, not rostrate; styles 4–5(–5.5) mm, 0.25–0.35 × ovary. Capsule 8–15 × 4–7 mm, ovoid, acuminate to rostrate; vittae narrow. Seeds dark brown, c. 2 mm long.