Hypericum nagasawae

玉山金絲桃

endemic

Hypericum nagasawae Hayata

名彙資訊

特徵描述

典藏標本

數位照片

分布位置

相關資訊

名彙資訊

學名發表文獻

Hayata, Materials for a flora of Formosa 38. 1911. (Mat. Fl. Formos.)

台灣首次記錄發表文獻

同發表文獻

異名

Hypericum attenuatum auct. non Choisy

Hayata, Flora Montana Formosae 59. 1908. (Fl. Mont. Formos.)
Hypericum randaiense Hayata

Hayata, Materials for a flora of Formosa 39. 1911. (Mat. Fl. Formos.)
Hypericum nagasawai Hayata var. nigrum Y. Kimura

Y. Kimura, The Botanical magazine, Tokyo 54: 82. 1940. (Bot. Mag. Tokyo)
Hypericum nagasawai Hayata var. typicum Y. Kimura

Y. Kimura, The Botanical magazine, Tokyo 54: 82. 1940. (Bot. Mag. Tokyo)
Hypericum taiwanianum Y. Kimura

Y. Kimura, The Botanical magazine, Tokyo 54: 84. fig. 3. 1940. (Bot. Mag. Tokyo)
Hypericum suzukianum Y. Kimura

Y. Kimura, The Botanical magazine, Tokyo 54: 86. fig. 6. 1940. (Bot. Mag. Tokyo)
Hypericum hayatae Y. Kimura

Y. Kimura, The Botanical magazine, Tokyo 54: 85. fig. 5. 1940. (Bot. Mag. Tokyo)
Hypericum taiwanianum Y. Kimura var. ohwii Y. Kimura

Y. Kimura, Nova Flora Japonica 10: 228. 1951. (Nov. Fl. Jap.)

各語言俗名

中

厚葉金絲桃. 巒大金絲桃. 高山金絲桃.
日

らんだいおとぎり. あつばやまおとぎり. たいわにゃまおとぎり. つぎたかおとぎり. にいたかくろおとぎり. にいたかおとぎり.

參考文獻

Yang, A list of plants in Taiwan . 1982. (List Pl. Taiwan)

特徵描述

生活型

herb

形態特徵

Perennial wiry herb 0.05-0.35 m, suberect to ascending from a creeping, branching rooting base, unbranched or ± branched above; stems solitary or ± caespitose, 2-4-lined, eglandular.
Leaves sessile or subsessile; lamina 0.8-2.5 cm long, 0.05-1.2 cm broad, ovate or oblong to elliptic or oblanceolate or linear, base cordate-amplexicaul to cuneate or subangustate, chartaceous to subcoriaceous, paler and glaucous or sometimes papillose beneath, with 3 or 4 ascending lateral veins and fine reticulate venation, lax or obscure, dense or irregular intramarginal dark glands and numerous to few laminar glandular dots, varying in size, only pale or rarely mixed pale and dark.
Inflorescence 1-11-flowered, subcorymbose, sometimes with 1-5-flowered axillary branches; flowers 15-27 mm in diam., ± plane, in bud ovoid to ellipsoid, obtuse; sepals 3-7.5 mm long, 0.8-2.5 mm broad, oblong or ovate-lanceolate to narrowly oblong, obtuse to acute, entire or rarely with 1-2 stalked marginal glands, with or without regular or irregular intramarginal glands, dark and sometimes pale, with laminar pale streaks or lines and rarely dark dots or lines, spreading or ascending in fruit; petals 8-15 mm long, 4-7 mm broad, obovate or oblong-obovate to oblanceolate, yellow, persistent, with or rarely without small dark, sessile or occasionally stalked marginal glands near apex only or round upper inner margin, with or rarely without laminar glandular lines, streaks and dots, pale and rarely also dark; stamens not or obscurely fascicled, persistent, 40-80; anthers yellow, with black gland; ovary 3-locular, the 3 styles 1.3-3 times as long (3.5-7 mm), free, ± spreading from near base.
Capsule (5)6-7 mm long, 3.5-5 mm broad, narrowly to broadly ovoid, with longitudinal vittae; seeds ca. 1 mm long, dark brown, finely scalariform-reticulate, scarcely carinate, without terminal appendage.
The variation from the mainly northern broad-leaved form with obtuse sepals and styles about 1.3 times as long as the ovary (H. nagasawai) to the southern narrow-leaved form with acute sepals and styles 2 or more times as long as the ovary (H. randaiense Hayata) appears to be continuous, and indeed the trends in leaf form, sepal shape and style length are only partially correlated. It is not possible, therefore, to recognize H. randaiense as a distinct species. Similarly, plants described as H. suzukianum Y. Kimura and H. hayatae Y. Kimura, respectively, are more extreme forms of trends within H. nagasawai; and the occasional forms with dark-glandular-ciliate sepal margins (H. taiwanianum Y. Kimura) are linked to the more typical forms by specimens with one or two glandular cilia on each sepal margin.

分布

台灣 : central mountains. On stony or rocky slopes, at roadsides, in conifer forests, 2,300-3,960 m.

引證標本

ILAN: Chiliting to Nanhushanchuang, Hsu 5930. HSINCHU: Tapachienshan, Moo 2059. TAICHUNG: Pahsienshan, Liu, Kou, Kao et al. 328. NANTOU: Tienchih to Yunhai, Kao 5870. CHIAYI: Paiyun Hostel to top of Mt. Morrison, Hsu 6283. HUALIEN: Kao 7807.