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Nomenclature
Hypericum longistylum Oliv.
Nomenclature
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Genus: HypericumSection: sect. Ascyreia
- lectotype: K - Henry - 582
- syntype: K - Henry - 217
- syntype: K - Henry - 994
DIAGNOSTIC DESCRIPTION
Shrub c. 1 m tall, erect, with long branches divaricate and short ones pinnate. Stems red, 2-4-lined and ancipitous when young, eventually terete; internodes 10-30 mm long, shorter than to exceeding leaves; bark pale grey. Leaves subsessile or with petiole up to 1 mm long; lamina 10-31 x 6-16 mm, narrowly oblong to elliptic or subcircular, rounded to subapiculate, margin plane, base cuneate to shortly angustate, ± densely glaucous beneath, chartaceous; venation: c. 3 pairs main laterals (faint), the midrib branches not or scarcely visible, without or rarely with very faint tertiary reticulum; laminar glands small to very small dots; ventral glands absent. Inflorescence 1-flowered, terminal and on short lateral branches; pedicels 8-12 mm long; bracts foliar, persistent. Flowers 25-45(-50) mm in diam., stellate; buds narrowly ellipsoid, acute. Sepals 3-6(-10) x 0-5-2(-3) mm, free or united at the base, imbricate to open, equal or subequal, spreading or recurved in bud and fruit, linear or rarely elliptic, acute, with margin entire; midrib ± conspicuous, other veins not prominent; laminar glands c. 4, basally linear, punctiform toward apex. Petals golden yellow to orange, not tinged red, spreading, (11-)15-22(-24) x 4-8(-10) mm, 2.5-3.5 x sepals, oblanceolate, without or almost without apiculus, margin entire, eglandular. Stamen fascicles each with c. 15-25 stamens, longest 15-25 mm long; anthers yellow. Ovary 3-4 x 2-3 mm, ellipsoid to globose, sometimes substipitate; styles 10-18 mm long, c. 3.5-6 x ovary, united almost to the apices then spreading; stigmas small. Capsule (4-)6-12 x 4-5 mm, ellipsoid to subglobose, sometimes substipitate. Seeds not seen.