• Scientific Name: Microcarpaea minima (Retzius) Merrill
• Ref: Philipp. J. Sci. 7: 100. 1912.
• Synonyms:
  Paederota minima Retzius, Observ. Bot. 5: 10. 1789;
  Microcarpaea muscosa R. Brown.
• Chinese Common Name:小果草 xiao guo cao
• Family: Scrophulariaceae
• Genus: Microcarpaea
• Distribution: Paddy fields, swamps; 500-1400 cm. Guangdong, Guizhou (Jiangkou Xian), Taiwan, Yunnan (Jinghong, Xichou), Zhejiang (Huangyan Xian) [India, Indonesia, Japan, Korea, Malaysia, Thailand, Vietnam; Oceania].
• Type:LT: J.G. Koenig – s.n. (LD). Lectotype designated by Fischer, C. E. C. 1932. The Koenig collection in the Lund Herbarium. Bull. Misc. Inform. Kew 1932(2): 62.

 Annuals. Stems slender, many branched, glabrous. Leaves sessile, amplexicaul, broadly linear to narrowly oblong, 3-4 X 1-2 mm, margin entire and somewhat thick; veins inconspicuous. Flowers sometimes 1 per node, alternate, sessile. Calyx ca. 2.5 mm; lobes narrowly deltoid-ovate, sparsely ciliate. Corolla pink, ovoid, as long as calyx. Capsule ovoid, shorter than calyx. Seeds brownish yellow, ca. 0.3 mm. Fl. Jul-Oct.(Flora of China)