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Nomenclature
Hypericum heterophyllum Vent.
Nomenclature
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Genus: HypericumSection: sect. Heterophylla
DIAGNOSTIC DESCRIPTION
Shrublet (0.05)0.1-0.2(0.3) m tall, much branched to form flattish-topped bush, with basal lignified parts branched effectively pseudo-dichotomously, with branches erect and straight to decumbent and twisted; wholly glabrous, without dark glands. Stems 2-lined at first with short internodes and bearing small scale-like leaves, later 2-lined to terete with elongate internodes, the latter (inflorescence-bearing) part obscurely glandular and withering and leaving the over-wintering basal part bearing pairs of strobiliform condensed shoots; cortex green; bark smooth, reddish brown to greyish brown. Leaves free, sessile; perennating scale-leaves 0.5- 1.5 mm long, broadly ovate or orbicular to obovate, cucullate, obtuse, apiculate to muticous, (all?) elongating in spring to spathulate, glaucous above, soon deciduous; foliage leaves 5-15 x 1-2 mm, narrowly elliptic-oblong to linear, concolorous, thinly glaucous above at least when young, coriaceous, apex acute, margin plane, base cuneate. Inflorescence (l-)3-5-flowered, terminal and often with single flowers or 3-5-flowered cymules in axils of 1-2 lower nodes, the whole up to 13-flowered, rounded-pyramidal to subcorymbiform; bracteoles triangular-lanceolate to linear; pedicels very short or absent. Flowers 8-12 mm in diam.; buds ellipsoid, subacute. Sepals green, 2-3.5 x 0.8-1.2 mm, imbricate, unequal, oblong to ovate-lanceolate, acute to subacute, entire; veins 5(3), not or only midrib prominent, unbranched; laminar glands linear to striiform. Petals bright yellow, not tinged red, 5-8 x 2.5-3 mm, 2.2- 2.5 x sepals, obovate to oblanceolate, obtuse to rounded with apiculus small, subterminal or obsolete, with laminar glands linear. Stamens 35-45, longest 4.5-7 mm, c. 0.9 x petals. Ovary c. 1 .5 x 0.7 mm, cylindric-ellipsoid to narrowly ovoid-cylindric, truncate; styles c. 4 mm long, c. 2.4 x ovary, widely spreading. Capsule 6-8 x 3-3.5 mm, ovoid-cylindric to narrowly cylindric, chartaceous, surrounded by old petals, longer than sepals, with valves longitudinally vittate. Seeds 2 on each placenta, not seen mature, rather prominently carinate; testa foveolate.