1910
It is an annual herb with a stout main root and fibrous lateral roots. The stem is slender, purplish-green, 12-32 cm tall, tetragonal, and sparsely hairy. Leaves vary from pinnate compound below to simple above, with serrate margins.
The flowers are purple or purplish-red, with a corolla tube extending slightly beyond the calyx, lips 3-lobed with the middle lobe inverted-heart shaped and side lobes ovate-triangular.
Blood Basin Herb, Luo Han Cao, Po Luo Zi, Po Luo Zi, Dan Ye Bo Luo Zi, Fan Bei Hong, Zhu Sha Cao, Ye Xia Hong, Hong Qing Cai