Pogostemon auricularius (L.) Hassk.

Herbs annual. Stems 0.4-2 m tall, prostrate basally, rooting at nodes, ascending, apex much branched, densely yellow spreading hirsute. Petiole rarely to 1.2 cm, upper stem leaves subsessile; leaf blade oblong to ovate-oblong, 2.5-7 × 1.5-2.5 cm, yellow strigose, with scattered impressed glands, base rounded to shallowly cordate, rarely cuneate, margin serrate, apex obtuse to acute; lateral veins 5- or 6-paired, conspicuous abaxially. Spikes 6-18 cm, apex caudate-acuminate, ca. 1 cm in diam. in flower, continuous or sometimes interrupted at base; bracts ovate-lanceolate, as long as corolla, margin strigose. Calyx campanulate, ca. 1 × 1 mm, glabrous, yellow glandular; teeth broadly triangular, ca. 1/4 as long as calyx tube, margin pilose. Corolla purplish to white, ca. 2.5 × as long as calyx, glabrous. Stamens much exserted, exserted parts bearded. Nutlets brown, subglobose, ca. 0.5 mm in diam., glabrous. Fl. and fr. Apr-Nov.

Himalaya (Nepal, Sikkim), India, Ceylon, S. China, Burma, Taiwan, Indo-China, Malaysia, Australia.

Fujian, Guangdong, Guangxi, Jiangxi, Taiwan, Yunnan [Cambodia, India, Indonesia, Laos, Malaysia, Myanmar, Philippines, Sri Lanka, Thailand, Vietnam].

400-1300 m

Wet areas in sparse forests, streamsides; 300-1700 m.

Mentha auricularia Linnaeus, Mant. Pl., ed. 1, 81. 1767; Dysophylla auricularia (Linnaeus) Blume; M. foetida N. Burman.

Pogostemon auricularius là một loài thực vật có hoa trong họ Hoa môi. Loài này được (L.) Hassk. miêu tả khoa học đầu tiên năm 1843.

耳叶刺蕊草（学名：Pogostemon auricularia），又名密花节节红，为唇形科刺蕊草属下的一个种。