Hypericum nakamurai (Nomenclature)
Shrub over 50 cm tall, with branches ± spreading. Stems 4-lined and ancipitous when young, soon terete; internodes 6-35 mm long, shorter than to exceeding leaves; bark grey-brown. Leaves sessile or subsessile; lamina 10-27(-30) x 5-10(-13) mm, oblong to elliptic or obovate, acute to rounded, margin plane, base cuneate to angustate, paler beneath, not glaucous, subcoriaceous, lower ones tardily ? deciduous; venation: 1 pair main laterals (intramarginal), with c. 6 midrib branches, the tertiary reticulum almost invisible; laminar gland dots prominent; intramarginal glands dense. Inflorescence 1-3-flowered, terminal, sometimes with 1-flowered short subsidiary branches from up to 3 nodes below; pedicels c. 10 mm long; bracteoles narrowly elliptic or elliptic-lanceolate, persistent. Flowers 40-60 mm in diam., stellate ?; buds not seen. Sepals 3.5-5(-8) x 0.7-l.2(-2) mm, very slightly connate, scarcely imbricate, equal, spreading ? in flower, spreading or reflexed in fruit, linear-lanceolate to linear, subacute to rounded, 5-veined with veins reticulately branched, midrib indistinct; laminar glands striiform and punctiform; inframarginal glands indistinct or absent. Petals bright yellow, not veined or tinged red, spreading ?, 20-28 x 10-20 mm, c. 3.5-6 x sepals, obovate, with apiculus short. Stamenfascicles each with c. 15 stamens, longest 12-16 mm long, c. 0.6 x petals. Ovary 2.5-3(-5) x c. 1.5 mm, narrowly ovoid-ellipsoid; styles 10.5-12(-15) mm long, c. 4. ovary, slender; stigmatic mass capitate. Capsule 8-12 x 4-6 mm, cylindric-ellipsoid. Seeds dark yellowish-brown, 1.2-1.4 mm long, narrowly cylindric, narrowly carinate, with long apical expansion narrow or sometimes narrowly winged, linear-reticulate.
In open limestone rock crevices; 1400-2400 m.
Taiwan (Hualien).
H. nakamurai is closely related to H. formosanum, but usually differs in having narrower leaves, smaller, narrower sepals that are reflexed in fruit, larger petals (? always), relatively longer styles and narrower fruits, as well as a distinct geographical and altitudinal distribution. However, a specimen of H. formosanum from Mt. Ta Tung, Taipei Co. {Sasaki s.n., NTU 077118) is somewhat intermediate.