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Nomenclature
Hypericum roraimense Gleason
Nomenclature
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Section: sect. BrathysSubsection: subsect. Phellotes
- holotype: NY - Tate - 412
- isotype: K - Tate - 412
Media
DIAGNOSTIC DESCRIPTION
Shrub 0.14-0.5 m tall, erect, bushy, rounded, with branches strict, pseudo-dichotomous and lateral. Stems orange-brown, 4-lined and ancipitous when young, eventually terete, cortex flaking irregularly; internodes 1-1.5 mm long. Leaves sessile, spreading from above base, suberect, not tetrastichous, becoming brown and deflexed, persistent until cortex is shed; lamina 6-13 x 1-1.8 mm, very narrowly elliptic or very narrowly oblong to linear, plane, midrib slightly prominent beneath, concolorous, not glaucous, chartaceous; apex acute, base parallel-sided or slightly narrowed above insertion, loosely sheathing, free; basal vein 1, unbranched; laminar glands dense, large, prominent beneath. Inflorescence 1-flowered, terminal and on lateral branches, with branching pseudo-dichotomous; pedicel c. 1.5 mm long; upper leaves not transitional. Flowers c. 10 mm in diam., stellate ? Sepals 3-7 x 0.5-1.5 mm, narrowly lanceolate, acute; veins 5, unbranched, midrib rather prominent; glands linear. Petals bright (?) yellow, 5-9 x 2-3 mm, 1.3-1.7 x sepals, oblanceolate-oblong; apiculus acute; glands linear, interrupted distally. Stamens c. 25, longest 4-5 mm long, c. 0.5-0.8 x petals. Ovary 1.7x1 mm, narrowly ovoid; styles 3, 4-4.6 mm long, 2.5-2.8 x ovary, erect; stigmas broadly capitate. Capsule c. 5 x 3 mm, ellipsoid, shorter than sepals. Seeds not seen.