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Nomenclature
Hypericum subalatum Hayata
Nomenclature
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Genus: HypericumSection: sect. Takasagoya
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Synonyms: 3
- isotype: BM - Faurie - 115
- holotype: TI - Faurie - 115
- isotype: E - Faurie - 115
- isotype: W - Faurie - 115
DIAGNOSTIC DESCRIPTION
Shrub over 50 cm tall, with branches ± ascending. Stems persistently 4-angled to narrowly 4-winged;internodes 10-25 mm long, shorter than leaves; bark reddish-brown. Leaves sessile; lamina 19-70 x 5-16 mm, narrowly elliptic to lanceolate or narrowly oblong-elliptic, acute to subacute or rounded-apiculate, margin plane, base cuneate, paler beneath, not glaucous, chartaceous, lower ones tardily deciduous; venation: 2-3 pairs main laterals (sometimes forming distinct intramarginal vein) and 6-7 pinnate midrib branches, with tertiary reticulum faint or almost invisible; laminar gland dots prominent; intramarginal glands dense. Inflorescence 1-flowered, terminal and on short subsidiary branches from up to c. 6 nodes below; pedicel 6-12 mm long; bracteoles foliar to subulate, deciduous. Flowers c. 25 mm in diam., substellate; buds ovoid, acute. Sepals 5-8 x 1-2(-3) mm, free or almost so, imbricate, subequal to unequal, erect in bud and fruit, oblong-linear to elliptic or oblanceolate, subacute to acute or shortly acuminate, 7-9-veined with veins little branched, midrib ± obscure; laminar glands mostly linear. Petals bright yellow, tinged red, ± spreading, c. 10-12 x 6 mm, 1.5-2 x sepals, obovate, with apiculus obsolete. Stamen fascicles each with c. 15 stamens, longest c. 9-10 mm long, c. 0.8 x petals. Ovary 2-4 x c. 0.7-1.3 mm, ± narrowly ovoid; styles (3.3-)4-7 mm long, c. 2-2.5 x ovary, slender; stigmatic mass capitate. Capsule 7-9 x 3-4 mm, narrowly ovoid to cylindric. Seeds dark yellowish-brown, 0.9-1.1 mm long, narrowly cylindric or narrowly ovoid-cylindric, scarcely carinate with long narrow apical expansion, very shallowly linear-reticulate.