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Nomenclature
Hypericum lancifolium Gleason
Nomenclature
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Section: sect. BrathysSubsection: subsect. Brathys
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Synonyms: 3
- holotype: NY - Killip, Smith - 17138
- isotype: US - Killip, Smith - 17138
DIAGNOSTIC DESCRIPTION
Shrub 0.2-1.5 m tall, erect, with branches strict, pseudo-dichotomous and sometimes lateral. Stems orange- to reddish-brown, 4-lined and ancipitous when young, the subfoliar ridges broad, soon terete, cortex exfoliating irregularly; internodes 1.5-3.5 mm long. Leaves sessile, subimbricate to narrowly spreading, ± tetrastichous, deciduous above base without fading; lamina 6-16 x 0.8-3 mm, narrowly oblong to very narrowly oblanceolate, plane to slightly incurved, not or scarcely cucullate, midrib not or scarcely impressed distally, margin narrowly hyaline, concolorous, undulate-papillose on both sides or sublucent beneath, sometimes glaucous, subcoriaceous; apex sharply acute, base angustate or parallel-sided, not sheathing, pairs united to form very narrow interfoliar ridge; basal vein 1, occasionally with 1-2 pairs of ascending lateral branches, not branching distally, not prominent beneath, tertiary reticulation absent; laminar glands dense, frequently prominent beneath. Inflorescence 1-flowered, with pseudo-dichotomous branches from node below; pedicel 2-4 mm long, rather slender; upper leaves not transitional. Flowers 10-20 mm in diam., stellate. Sepals 6-10 x 1.5-3 mm, narrowly to acuminate, incurved above, veins 3-5, unbranched or laterals branched, midrib not prominent; glands sometimes linear to striiform towards base, otherwise (or wholly) punctiform. Petals pale yellow, 8-12 x 3-5 mm, 1.1-1.3 x sepals, narrowly obovate; apiculus acute; glands punctiform. Stamens c. 30-70, longest 5-7 mm long, 0.5-0.75 x petals. Ovary 2-3 x 1-2 mm, ellipsoid; styles 3, 2-4 m long, 1-1.75 x ovary, outcurving; stigmas scarcely to broadly capitate. Capsule 4-7 x 2.5-3 mm, ellipsoid, acute, shorter than sepals. Seeds 0.7-0.8 mm long, ecarinate; testa finely scalariform-reticulate.