Hypericum geminiflorum var. simplicistylum

小雙花金絲桃

endemic

Hypericum geminiflorum Hemsl. var. simplicistylum (Hayata) Robson

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

Robson, Blumea 20: 254. 1972.

台灣首次記錄發表文獻

同發表文獻

異名

Hypericum simplicistylum Hayata

Hayata, Materials for a flora of Formosa 40. 1911. (Mat. Fl. Formos.)
Hypericum formosanum auct. non Maxim.

Suzuki, Annual report of the Taihoku botanic garden, Faculty of Science and Agriculture, Taihoku Imperial Univeristy , Formosa, Japan 1: 158. 1931. pro parte quoad spec. Suzuki 6375.. (Ann. Rep. Taihoku Bot. Gard.)
Takasagoya simplicistylum (Hayata) Y. Kimura

Y. Kimura, The Botanical magazine, Tokyo 50: 502. fig. 3.r-s & 4.f-I. 1936. (Bot. Mag. Tokyo)
Hypericum geminiflorum Hemsl. ssp. simplicistylum (Hayata) Robson

Robson, Bulletin of the British Museum (Natural History), Botany 12(4): 295. 1985. (Bull. Brit. Mus. (Nat. Hist.) Bot.)

各語言俗名

日

のうこうきんしばい.

參考文獻

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

特徵描述

生活型

shrub

形態特徵

Dwarfer (ca. 0.3-0.4 m tall), more erect shrub;
Leaves similar to var. geminiflorum sen. str. rather than 'H. trinervium' (i. e., relatively narrow).
axillary flowers and flowering branches from up to 10 pairs of nodes, with flower buds subacute to rounded; ovary ca. 4 mm long, with styles 1-1.3(1.5) times as long.
capsule 5-8 mm long, 4-5.5 mm broad, cylindric-ellipsoid to narrowly ovoid-conic; Seeds 0.6-1.2 mm long.
Var. <i>simplicistylum</i> is apparently an upland derivative of var. <i>geminiflorum</i>. Although tending to be smaller in all parts and more erect, there is a certain overlap in character variation between it and the typical variety that prevents their recognition as separate species. The relative style length and fruit shape, however, are usually diagnostic.

分布

台灣 : Endemic to central and northern Taiwan. Exposed stony ground (mountain slopes, roadsides) at higher altitudes than var. geminiflorum (1,500-1,800 m).

引證標本

ILAN: Inter Kinyan et Piyahau, Suzuki 6375. TAICHUNG: Lakulaku, Sasaki s. n. 1923. NANTOU: Nengkaoshan, Kawakami & Mori 4507; Hoshe, Huang 4084. CHIAYI: Mt. Morrison, Sasaki s. n. 1935.