Classification
 Nomenclature
Scientific Name:
Hypericum ×inodorum Mill., Gard. Dict., ed. 8, (1768)
Synonymy:
  • = Hypericum elatum Aiton, Hortus Kew. [W. Aiton] 3, 104 (1789)
 Description

Shrub, not rhizomatous, up to 2 m high. Stems spreading, terete, 2-lined, black glands absent. Leaves 25.0–75.0 mm long, 9.0–40.0 mm wide, ovate-elliptic, ovate-oblong or narrowly ovate, glabrous, reticulate tertiary veins visible; pellucid glands present; black glands absent; apex subacute or obtuse, often mucronulate; margin entire; base obtuse or amplexicaul; sessile. Inflorescence terminal, in cymes, flowers 5–12, corolla 25–45 mm diam. Pedicels 10.0–28.0 mm long. Bracteoles 1.8–3.5 mm long, 0.2–0.5 mm wide, lanceolate or linear-lanceolate, apex acuminate. Sepals 5, 4.0–9.0 mm long, 1.9–3.7 mm wide, accrescent, ovate or ovate-oblong; pellucid glands present; black glands absent; apex acute; margin entire. Petals 20.0–22.0 mm long, longer than sepals, ovate, medium yellow, black glands absent, caducous after anthesis. Stamens in 5 bundles, 180–200, 10.0–23.0 mm long, variable in length, equal to or shorter than petals; anthers 0.5–0.8 mm long, anther gland yellow. Ovary 4.5–6.5 mm long, 3.0–5.0 mm wide, ovoid. Styles 3, 12.0–12.5 mm long, longer than ovary. Fruit baccate, 7.0–13.0 mm long, 7.0–8.0 mm wide, ovoid or ellipsoid-ovoid, shining red, ± dehiscent. Seeds 0.9–1.0 mm long, c. 0.3 mm wide, narrow ovoid or narrowly ovoid, terete, brown.

 Recognition

H. ×inodorum and H. androsaemum both share fleshy fruit, but the former species can be distinguished by the leaves having visible reticulate tertiary veins, the petals being much longer than the sepals, styles much longer (12.0–12.5 mm long) than the ovary, and the fruit remaining red.

 Habitat

Occurs on roadside banks, streamsides, and a hillside of poor pasture.

 Biostatus
Exotic
 First Record

Healy (1972, p. 188). Voucher: CHR 91557, 1957.

 Phenology

Flowering: Nov.–Feb.

 Bibliography
Aiton, W. 1789: Hortus Kewensis; or a catalogue of the plants cultivated in the Royal botanic gardens at Kew. Hortus Kewensis. Vol. 3. Nicol, London.
Healy, A.J. 1972: Weedy St John's Worts (Hypericum spp.) in New Zealand. N.Z.Weed and Pest Control Conf.Proc. 25: 180–190.
Heenan, P.B. 2014: Hypericaceae. In: Breitwieser, I.; Brownsey, P.J.; Heenan, P.B.; Wilton, A.D. (ed.) Flora of New Zealand — Seed Plants. Fascicle 1. Manaaki Whenua Press, Lincoln.
Miller, P. 1768: Gardners Dictionary. Vol. No. 6. Edition 8.