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Nomenclature
Hypericum synstylum N. Robson
Nomenclature
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Genus: HypericumSection: sect. Campylosporus
- isotype: BM - Glover, Gilliland - 1168
- isotype: EA - Glover, Gilliland - 1168
- holotype: K - Glover, Gilliland - 1168
DIAGNOSTIC DESCRIPTION
Shrub 1-5—3 m tall, diffusely branched, with branches spreading. Stems orange when young, soon terete; internodes 6-11 mm long, shorter than leaves; bark reddish-brown. Leaves with petiole 1-2 mm long; lamina 10-30 x 5-12 mm, oblong or elliptic-oblong to ovate, apiculate-obtuse to rounded, margin plane, subincrassate, base broadly cuneate to rounded, not auriculate, paler beneath, scarcely glaucous, chartaceous, lower ones soon deciduous; venation: 7-9 basal and lower lateral veins (i.e. midrib + 3-4 pairs), the laterals unbranched, linked by cross-veins, with secondaries reduced to short streaks in areolae of lax tertiary reticulum; laminar glands in secondary venous system, short streaks, without distinct alternating series of dots; marginal glands reddish or pale, irregular. Inflorescence 1-2-flowered; pedicel up to 2.5 mm long; bracts intermediate, acute. Flowers 25-33 mm in diam., stellate; buds ovoid, acute. Sepals 5-7 x 1.7-2.2 mm, scarcely imbricate to basally open, equal, linear-lanceolate, acute, margin entire, midrib obscure; laminar glands linear to punctiform, numerous; submarginal glands absent; marginal glands pale or absent. Petals golden yellow, not tinged, tardily deciduous, spreading, 13-16 x 8-10 mm, c. 2-5 x sepals, obovate, with apiculus very small or absent; margin entire, eglandular; laminar glands linear, not interrupted. Stamen fascicles persistent, each with 15-20 stamens, longest 7-10 mm long, 0.5-0.75 x petals, with filaments united for 0.5 mm. Ovary 5-6.5 x 2-3 mm, narrowly ovoid; styles 6-7 mm long, 1.1-1.2 x ovary, completely coherent; stigma mass narrow, not capitate. Capsule 8-10 x 5-6 mm, narrowly ovoid. Seeds reddish-brown, 1.2-1.5 mm long, cylindric, not winged or carinate, shallowly linear-reticulate.