討論:台灣金絲桃

山羊百科，林文智老師的植物、山岳、攝影紀錄

3. Hypericum formosanum Maxim. In Bull. 台灣金絲桃

Shrub; branches arching; branchlets 4-lined and flattened when young, soon 2-lined to terete. Leaves sessile; lamina 2-6 cm long, 1.1-2.9 cm broad, ovate to elliptic, apex subacute to rounded, base cuneate to rounded, subcoriaceous, paler beneath, with faint submarginal vein, reticulate venation faint or invisible and only pale glandular dots, ± prominent above. Inflorescence 1-3-flowered, terminal, sometimes with up to 10 pairs of short axillary 1-flowered branches; flowers 2.5-3.5 cm in diam., shallowly concave, in bud ovoid, obtuse to subacute; sepals 7-10 mm long, 1.5-6 mm broad, lanceolate to elliptic or oblanceolate, acute to subacute, margin entire, erect in fruit; petals 10-20 mm long, 8-12 mm broad, obovate, yellow, with amber gland; ovary 3-5(6) mm long, ovoid to subglobose, 5-locular, the 5 styles 1.2-2.5 times as long, completely united. Capsule 8-9 mm long, ca. 6 mm broad, broadly ovoid; seeds 1-2 mm long, with terminal expansion.

Endemic to Taiwan. On well-drained banks or stony areas from sea level to ca. 500 m.

TAIPEI: Tatunshan, Kao s. n. 1956. KEELUNG: Keelung, Yamamoto s. n. 1929.

The long sepals easily distinguish H. formosanum from all other Taiwan species with styles completely united, except H. nakamurai.