Elatostema cyrtandrifolium

台灣樓梯草

Elatostema cyrtandrifolium (Zoll. & Moritzi) Miq.

名彙資訊

特徵描述

典藏標本

數位照片

分布位置

相關資訊

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名彙資訊

學名發表文獻

Miq., Plantae Junghuhnianae 1: 21. 1851. (Pl. Jungh.)

台灣首次記錄發表文獻

Tseng & Hu, Taiwania 60(1): 28. 2015.

異名

Elatostema herbaceifolium Hayata

Hayata, Icones Plantarum Formosanarum 6: 57. 1916. (Icon. Pl. Formos., 台灣植物圖譜)

各語言俗名

日

くさだちきみず.

參考資料

Yang, A list of plants in Taiwan . 1982. (List Pl. Taiwan, 台灣植物名彙)

特徵描述

生活型

herb

形態特徵

Perennial herbs; stems terete, pendent or ascending, nearly glabrous.
Leaves membranaceous to chartaceous, slightly hirsute above, sparsely minute-hirtellous beneath, asymmetrically narrow elliptic to elliptic, to 15 cm long, less than 5 cm wide, basiscopic half acute to rounded, margins very sparsely ciliolate, sharply serrate, apex with an entire acumine; petioles to 5 mm long; stipules lanceolate-cymbiform, ca. 5 mm long, 1-nerved, glabrous above, minutely hirtellous beneath.
Female inflorescences subquadrangular, sessile or subsessile; bracts slightly puberulent, connate into an involucre to 10 mm long, 2.5 mm wide. Female flowers short pedicellate; bracteoles semitransparent, subquadrangular; sepals 3, subequal, triangular; staminodes 3; ovary ellipsoid.
Achenes conspicuously 8-ribbed, ellipsoid.

分布

台灣 : at low to medium altitudes, mostly in ravines or on moist forest floors near ravines.
世界 : Mainland China, Himalaya, Indo-china and Indonesia.

引證標本

TAIPEI: Bunzangun, Suzuki 18446. TAOYUAN: Kuanhsi-Fusing, Huang 4815; Rarashan, Shih 3108. NANTOU: Hsinyi Hsiang, Shih 2967; Tungpu, Shih 2972. CHIAYI: Chiaoliping-Juili, Yang 3571; Tapu Shiang, Shih 2728. KAOHSIUNG: Chaishen Shiang, Shih 3327. TAITUNG: Chipen Logging Trail, Shih 3272.