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Nomenclature
Hypericum dichotomum Lam.
Nomenclature
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Section: sect. BrathysSubsection: subsect. Spachium
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Synonyms: 5
- lectotype: P-LAM - Thiery - s.n. in Herb. Thouin
- syntype: MPU - Thiery - s.n. in Herb. Thouin
- syntype: C - Thiery - s.n. in Herb. Thouin
Media
DIAGNOSTIC DESCRIPTION
Shrublet or wiry perennial herb, 0.06-0.2 m tall and to c. 0.4 m long, with taproot, erect or decumbent to trailing and rooting, sometimes mat-forming; branches from below inflorescence and lateral, sometimes also basal, divaricate. Stems reddish-brown, 4-lined, ancipitous and densely gland- dotted at first, eventually terete, cortex exfoliating in strips; internodes 1-18 mm long. Leaves sessile, suberect to spreading, longer to shorter than internodes, persistent; lamina 1.5-6 x 0.5-2.5 mm, oblong-elliptic or oblanceolate to obovate, margin plane, entire, not cucullate, midrib prominent beneath, concolorous, sometimes glaucous, subcoriaceous to chartaceous; apex subacute (or rarely acute) to rounded, base parallel-sided to narrowly cuneate, free; basal vein 1, sometimes obscurely branched; laminar glands dense, prominent on both sides. Inflorescence 1-5-flowered, branching repeatedly pseudo-dichotomous/sympodial and some times dichasial-monochasial, without subsidiary branches; peduncle and pedicels 2-7 mm long, not incrassate upwards; bracts and bracteoles foliar, not reduced. Flowers 4-5 mm in diam., infundibuliform? Sepals 2.5-4 x 1-1.8 mm, unequal, narrowly oblong or oblanceolate to obovate-spathulate, acute to rounded; veins 3-5, unbranched, becoming prominent; glands linear, distally punctiform. Petals bright (?) yellow to yellow-orange, 3.5-5 x 1-1.5 mm, c. 1.5 x sepals, oblong-oblanceolate; apiculus acute?; glands distal, punctiform. Stamens c. 10-15, longest 3.5-4 mm long, c. 0.8 x petals, in 5 distinct fascicles. Ovary 1-1.5 x 0.5-0.8 mm, ellipsoid, acute to obtuse, exceeding sepals; styles 3, 1.5-2.5 mm long, 2-2.5 x ovary, very slender, spreading; stigma peltate. Capsule 3.5-5 x 2-4 mm, ovoid-ellipsoid to subglobose, acute to obtuse, exceeding sepals. Seeds 0.6-0.7 mm long, ecarinate; testa finely scalariform.