Mimulicalyx paludigenus P. C. Tsoong ex D. Z. Li & J. Cai

After publication of FOC Vol. 18, it was found that P. C. Tsoong's 1979 treatment (Fl. Reipubl. Popularis Sin. 67(2): 400. 1979) is invalid because two type specimens were cited, and so LI De-Zhu and CAI Jie validated the name by designating one holotype (C. W. Wang 81476, holotype, PE).

Herbs, to 45 cm tall, glabrous. Roots fibrous, fascicled. Stems 1-3, erect or basally somewhat prostrate. Leaves all on stem, more than 10 pairs; leaf blade spatulate-oblanceolate to broadly lanceolate, 2-5 X 0.5-1.2 cm, base wide and subamplexicaul, margin entire or with few small callous teeth, apex obtuse. Flowers axillary, varying in number. Pedicel conspicuously longer than bracts, in fruit to 4 cm or more. Calyx ca. 1.5 mm in fruit, main veins 5; lobes recurved near apex. Fl. Jun-Sep, fr. Jul-Oct.

Sichuan (Huidong Xian), Yunnan (Mengzi Xian, Yanshan Xian).

* Swamps, rice fields, along streams; 1100-1600 m.

Mimulicalyx paludigenus là một loài thực vật có hoa trong họ Huyền sâm. Loài này được Tsoong ex D.Z. Li & J. Cai mô tả khoa học đầu tiên năm 2005.

沼生虾子草（学名：Mimulicalyx paludigenus）为玄参科虾子草属下的一个种。