生活型

herb

形態特徵

• Rhizome with branching scars and scale leaves, sending out stolons which develop new plantlets. Fertile branches many, petiole-like, highly variable in length.
• Petiole variable, 0.5-5 cm long. Leaves blade ovate-orbicular, rounded, 2-8 cm across, deeply cordate at base, abaxially densely glandular dotted.
• Flowers ca. 1.0-1.2 cm in diameter, 6-10 clustered at nodes, 4-5-merous. Pedicels 3-5 cm long. Calyx deeply 4-5-lobed 10 near base; lobes ea. 3 mm long, ovate-lanceolate, apex obtuse, margins hyaline. Corolla white with a yellow throat; lobes 4-5, oblong-lanceolate, up to 5.5 mm long, apex 2-lobed, margin with fimbriate hairs. Stamens as many as corolla lobes, inserted in the throat of the corolla, each with a small tufts of glandular hairs or not. Pistil bottle-shaped; style 2-lobcd; hypogynous disc glands as many as stamens, orbicular, cililolate at tips with papillose hairs.
• Capsule globose, ca. 3 mm long. Seed ellipsoid, ca. 1 mm long, with sparse tubercles rounded at the distal ends.
• Chromosome number 2n = 4x = 36. <li>This species is distributed both in Taiwan and Lanyu island and has geographical differentiation. The population in Taiwan has bigger leaves (up to 8 cm across), petal with a small tufts of glandular hairs at base and few turbaculae on seed margin, but the population in Lanyu island has smaller leaves (2-5 cm across), petal without a small tufts of glandular hairs at base and more tuberculae on seed margin. The chromosome number of Taiwanese plant is 211 = 36, but 211 = 56 in Japanese plant (Shigenobu & Tanaka, 1980). So, a further study is needed for this taxon. </li>

分布

• 台灣 : found throughout the island and Lanyu island, but is very rare now.
• 世界 : E. Russia, Korea and Japan.

引證標本

ILAN: Suao, Y. Suzuki, 9233 (TAl); Tsaopei, Y. P. Yang s.n. Scp 1976 (TAW). TAIPEI: Fulong, S. P. Ii 7/9 (TNM); Mt. Chising, H. Shimada 407 (TAl); K. S. Hsu el at. 200 (TAl), T. Nakamura s. n. Feb 1940 (TAl); Mcnghuanhu, S. P. Ii 732 (TNM); H. Shimizu s. n. Dec 1934 (TAl); Kozanba, H. Shimizu 498 (TAl); Yangmingshan National Park, Erhtzupei, S. H. Wu 1441 (HAST). TAOYUAN: Y. Shimada s. n. Oct 1914 (TAl); S. Sasaki s. n. Oct 1914 (TAl); G. Masamune 664 (TAl); en route from Taoyuan to Nankan. Y. Yamamolo s. n. May 1929 (TAl); Nankan. Y. Kudo 559 (TAl); Pushing, C. C. Chuallg & M. T. Kao 3131 (TAl). HSINCHU: Toengun. Hakkwaiso, T. Suzuki 21370 (TAl); Sitisci, H. Shimada 407 (TAl); Sintilru, Y. Shimada 1556c (NTUF). NANTOU: Puli, Liyulru, S. Sasaki s. n. Dec 1931 (TAl); Shuishe, T. Kawakami s. n. Dec 1913 (TAIF). PINGTUNG: Mutan, T. Koyama & M. T. Kao 8966 (TAl); Nanjenshan, C. C. Hsu et at. 8318 (TAl), B. F. Wang 12726 (TAl), T. C. Huang 4879 (TAl); Nanjcnhu, S. H. Wu 1097 (I•IAST). TAITUNG: Tawu, Tawuchih, H. Chiang s. n. Oct 1972 (TAIF); Lanyu, T. C. Huang & M. T. Kao 5071 (TAl); S. Sasaki s. n. May 1924(TAI); T. Kawakami & K. Mori 2483 (TAl); S. Sasaki s. n. Nov. 1934 (TAl).

參考文獻

• Sung-Po Li, Tsung-Hsin Hsieh and Chun-Chi Lin, Taiwania 47(4): 246-258. 2002.