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Nomenclature
Hypericum gentianoides (L.) Britton, Sterns & Poggenb.
Nomenclature
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Section: sect. BrathysSubsection: subsect. Spachium
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Synonyms: 5
Media
DIAGNOSTIC DESCRIPTION
Annual herb 0.07-0.6 m tall, with taproot, erect; branches lateral, from upper two-thirds or from most nodes, strict, mostly opposite (at least lower ones), wiry, not rooting. Stem eventually orange-brown to reddish-brown, 4-lined, ancipitous above, densely glandular, cortex exfoliating in strips; internodes 3-20 mm long. Leaves sessile, appressed, canaliculate or sometimes scale-like, shorter than internodes, persistent; lamina 1-4 x 0.4-0.6 mm, all very narrowly triangular- subulate to linear-subulate or first two pairs broader, margin incurved, smooth, cucullate, midrib slightly prominent, smooth, concolorous, not glaucous, subcoriaceous to chartaceous, apex obtuse to rounded, base parallel-sided or slightly broadened, free; basal vein 1, unbranched, tertiary reticulation absent; laminar glands often in a single row, not prominent. Inflorescence 1-24-flowered, usually pyramidal overall, branching dichasial/monochasial or often wholly monochasial, with subsidiary inflorescences and inflorescence branches from most or nearly all nodes below; pedicels 1-2.5 mm long, not incrassate upwards; bracts foliar, not reduced. Flowers 3-5 mm in diam., stellate. Sepals 1.5-2.5 x 0.4-0.8 mm, unequal, lanceolate to narrowly oblong or linear-lanceolate, acute; veins 3, unbranched, all becoming prominent; glands linear. Petals orange-yellow to yellow, tinged red in bud, 2-3.3(-4) x 0.8-1.2 mm, c. 1.3 x sepals, oblong; apiculus almost absent; glands distally punctiform. Stamens 5-10(11), longest 1.5-2 mm long, c. 0.5-0.65 x petals, obscurely 5-fascicled or 5 single. Ovary 1-1.5 x 0.5-0.8 mm, narrowly ovoid-trigonous; styles 3, 0.8-1.2 mm long, c. 0.8 x ovary, spreading; stigmas broadly capitate. Capsule 4-5 x 1-1.2 mm, very narrowly cylindric-conic, acute, 2-3 x sepals, with valve midrib prominent. Seeds 0.4-0.75 mm long, ecarinate; testa markedly ribbed-scalariform.