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Nomenclature
Hypericum taihezanense Sasaki
Nomenclature
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Section: sect. HypericumSubsection: subsect. Erecta
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Synonyms: 3
- holotype: TAI - S. Suzuki - 79
DIAGNOSTIC DESCRIPTION
Perennial herb (0.1–)0.15–0.4(0.7) m tall, erect to decumbent or ascending from ± creeping and rooting base, with stems solitary or ± caespitose, unbranched or branched above. Stems terete, eglandular; internodes 10–45 mm, longer than leaves. Leaves sessile or to 1.5 mm petiolate; lamina 4–36(–40) × 3–14 mm, triangular-lanceolate or ovate-oblong to oblong or elliptic or oblanceolate, paler or glaucous beneath, ± thinly chartaceous; apex rounded, margin entire, plane, base cordate-amplexicaul to angustate; venation: 3–7 pairs of main laterals from lower quarter to fifth of midrib, tertiary reticulation rather lax; laminar glands pale, dense, varying in size; intramarginal glands black, rather dense. Inflorescence 1–c. 30-flowered, from 1–2 nodes, with branches from up to 6 nodes below, the whole loosely corymbiform to cylindric; pedicels 1.5–3 mm; bracts and bracteoles reduced-foliar. Flowers 5–10 mm in diam., concave; buds ellipsoid, obtuse. Sepals 5, unequal, 2.5–6 × 0.8–1.5 mm, lanceolate to narrowly oblong or linear, obtuse to rounded, entire; veins 3–5, all branching; laminar glands pale, punctiform and ± striiform; intramarginal glands black, ± dense. Petals 5, mid-yellow, not tinged red in bud, (3–)5–6(–8) × (1–)2–3.5 mm, (0.7–)1.2–2 × sepals, obovate-oblong, rounded?, entire or distally with prominent glands; laminar glands pale, few, punctiform or striiform, distal, or absent; marginal glands black, near apex or round upper half, sessile and/or? on cilia. Stamens 21–30, ‘3’-fascicled, longest c. 4–5 mm, c. 0.8–0.9 × petals; anther gland black. Ovary 1.5–3 × c. 1.2–2.5 mm, broadly ovoid; styles 3, free, divergent to ascending, 1–2 mm, 0.5 × ovary; stigmas narrowly capitate. Capsule 3.5–7 × 3–4.5 mm, ovoid to subglobose (l : b = 1.2–1.6), c. 0.8–1.2 × sepals. Seeds dark brown, 0.5–0.6 mm, cylindric, not carinate or appendiculate; testa finely scalariform-foveolate.