Microula trichocarpa (Maxim.) I. M. Johnst.

Stems erect, branched above or throughout, 15-45 cm tall, moderately densely spreading bristly or hispid. Stem leaves gradually reduced upward, short petiolate to sessile, narrowly oblong to narrowly spatulate, 2-9 cm, short strigose, adaxially sparsely bristly, base attenuate, margin entire to obscurely finely dentate, apex acute. Inflorescences terminal, ca. 1 cm wide, sometimes slightly elongated to 1.5 cm; bracts to 2 mm. Flowers crowded, long pedicellate, opposite leaves on upper stems. Calyx 1.7- 2.2 mm, to 3.5 mm in fruit, parted nearly to base; lobes narrowly triangular, sparsely long hispid and hirtellous outside, short strigose inside. Corolla blue; tube 1.5-5 mm, glabrous; appendages triangular to lunate, ca. 0.3 mm, short hispid; limb 4-10 mm wide, glabrous or sparsely pubescent outside; lobes suborbicular. Nutlets gray-white, broadly ovoid, 1.8-2.5 × 1.2-2 mm, with fine tubercles and extremely short hairs; aperture elliptic, on nearly entire adaxial surface; attachment scar at apex adaxially.

Gansu, E Qinghai, Shaanxi, Sichuan

* Forests, ravines, field margins; 2400-3600 m.

Microula trichocarpa là loài thực vật có hoa trong họ Mồ hôi. Loài này được (Maxim.) I.M. Johnst. mô tả khoa học đầu tiên năm 1928.

长叶微孔草（学名：Microula trichocarpa）是紫草科微孔草属的植物，为中国的特有植物。分布在中国大陆的四川、陕西、青海、甘肃等地，生长于海拔2,400米至3,600米的地区，常生于山地林下、沟边及田边，目前尚未由人工引种栽培。