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Nomenclature
Hypericum ludlowii N. Robson
Nomenclature
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Genus: HypericumSection: sect. Monanthema
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Synonyms: 2
- holotype: BM - Ludlow, Taylor - 5461
DIAGNOSTIC DESCRIPTION
Perennial herb up to 0.4 m tall or long, erect or ascending from creeping and rooting base, with stems slender, growing through other vegetation, unbranched or with short branches from upper or occasionally several nodes. Stems 2-4-lined, eglandular; internodes 7-30 mm, exceeding leaves. Leaves petiolate, with petiole 0.5-1 mm; lamina 3-20 ´ 1.5-10 mm, triangular-ovate or elliptic to oblong-oblanceolate, paler beneath, not glaucous, subchartaceous; apex rounded, margin entire, plane, base rounded to rarely cuneate; venation: 3(2) pairs of main laterals from lower third to quarter of midrib, with tertiary reticulation dense; laminar glands pale, punctiform, very small, dense to sparse; intramarginal glands all black or black and pale or reddish, rather dense. Inflorescence 1-9-flowered from 1-2 nodes, subcorymbose or broadly pyramidal to cylindric or bifurcate, sometimes with flowering branches from up to 3 nodes below; pedicels 1.5-3 mm; bracts and bracteoles narrowly oblong and black- or red-glandular-ciliate and -auriculate or reduced-foliar and entire without auricles, persistent. Flowers (6-)9-11(-15) mm in diam., stellate; buds cylindric-ellipsoid, subacute. Sepals 5, subequal or unequal, 1.5-5 ´ 0.5-1.5 mm, erect in bud and fruit, narrowly oblong or narrowly elliptic to lanceolate, obtuse to acute, glandular-ciliate to entire; veins 5, unbranched; laminar glands linear, all pale or partly black; marginal glands black or reddish, on cilia or sessile or submarginal, sometimes few. Petals 5, golden yellow, not tinged red in bud, 4-7 ´ 1-2.5 mm, (1.3-)1.5 ´ sepals, oblong-oblanceolate, rounded, margin with black or reddish gland in apiculus and sometimes a few subapical sessile black glands, without or rarely with 1-2 laminar black streaks. Stamens c. 20, '3'-fascicled, longest 4-5 mm, c. 0.6-1 ´ petals; anther gland black. Ovary 3?-locular, 1.6-2.5 ´ 1-2 mm, ellipsoid to subglobose; styles 3, 2-2.5 mm, 1-1.4 ´ ovary; stigmas narrowly to scarcely capitate. Capsule 4.5-6 ´ 2.5-3.5 mm, cylindric-ellipsoid to ellipsoid-subglobose; valves longitudinally vittate. Seeds straw-coloured, 0.4 mm, cylindric; testa foveolate-scalariform.