生活型

herb

形態特徵

• Perennial herbs, 4-25 cm tall. Rhizomes slender, stoloniferous. Stems erect or ascending, quadrangular, glabrous.
• Leaves membranaceous, 2-opposite at lower nodes; 4- (or 5) -verticillate at upper nodes, 2 larger, others often reduced into stipule-like; petiole 3-10 mm long, longer at lower part, gradually shorter upwards, glabrous or sparsely pilose; blade ovate to wide ovate, 10-30 mm long, 5-20 mm cm wide, apex acute, base cuneate to rounded, short attenuate into petiole, entire, sparsely pubescent on both surface, pubescent on margin, pinnately nerved, with a prominent midrib and 2 pairs of lateral nerves.
• Cymes terminal and in axils of upper leaves, usually trichotomous branched, 2-4 cm long, branches often furcate, few-flowered, each branch with 2 or 3 flowers, peduncle glabrous. Flowers small; bracts linear, 1-2 mm long; pedicel 1-2 mm long at flowering, elongated to 3-9 mm long at fruiting, glabrous; calyx ellipsoid, ca. 1 mm long, with dense spreading long hooked pilose hairs; corolla rotate, white, ca. 2.5-3 mm in diameter, 4- (or 5) -lobed; lobes ovate, acute, ca. 1.5 mm long; stamens 4, alternated to the lobes, filaments short; style short, ca. 0.7 mm long, stigma bifid, ovary 2-celled, with dense spreading long hooked pilose hairs.
• Fruits dry, with 1 or 2 schizocarps. ; schizocarps globose, ca. 1.5-2 mm long, with dense spreading long hooked pilose hairs.

分布

• 台灣 : This species is found at ca. 2,800 m of high elevations in Mt. Kuanshanlingshan area, Yushan National Park.
• 世界 : widely distributed in Asia including E. Siberia, Korea, Japan, China, Nepal, Sikkim and India.

引證標本

KAOHSIUNG COUNTY: Taoyuan Township, Mt. Kuanshanlingshan, 2,800 m, 9 Jul. 2009, Hsieh and Chiang 3007 (TAI, NUTN).

引用文獻

• Tsung-Hsin Hsieh and Po-Yi Chiang, Taiwania 55(2): 192-194. 2010.