Boenninghausenia albiflora (Hook.) Rchb. ex Meisn.

Commonly found in the N. of Pakistan (Hazara and Murree Hills) at 2-3000 m, growing in shady forest. The plant has an unpleasant smell and the roots have a spicy fragrance. Locally called, “Pissu. Mar” or flea killer, its leaves when crushed emit a strong foetid smell and used as a flea powder.

Slender, branched, perennial herb, 30-60 cm high, woody at the base. Stems brownish-red, glabrous or sometimes sparsely pubescent. Leaves alternate, 3-5-pinnate, gland dotted. Leaflets 6-18 x 5-12 mm, obovate to obcordate, entire, obtuse or emarginate, petioles slender and wiry; leaflets glabrous, paler on the lower surface. Flowers small, white, in cymes. Pedicels very slender. Sepals cupular, c. 1.5 mm long, 4-5-lobed; lobes obtuse, persistent. Petals 4-5, c. 5 mm long, oblong. Stamens 6-8, filaments slender, unequal, longer than the petals. Ovary 3-5-lobed, with a gynophore arising from an urceolate disc. Capsule 6-8 mm in diameter, membranous, ripe capsule splitting into distinct fruitlets. Seeds black, reniform, testa granulated.

Plants to 1.2 m tall. Stems, branches, leaves, and inflorescences glabrous to pubescent. Larger leaves 4-16 cm; leaflet blades elliptic to obovate to broadly obovate to suborbicular, 0.5-2.5 × 0.4-1.5 cm. Inflorescences to 60 cm. Flowers globose to ovoid to ellipsoid to oblong in bud. Sepals 0.5-1.3 mm. Petals elliptic to obovate, or broadly so, 3.5-6 mm, apex acute to broadly rounded. Disk 0.3-0.5 mm. Gynophore in flowers at anthesis 0.3-1.5 mm, in fruit 0.6-5.5 mm. Fruit follicles 2.5-5 mm. Fl. and fr. May-Nov.

Himalaya (Kashmir to Bhutan), India, China, Taiwan, Malaysia.

Distribution: Temperate Himalayas, Phillipines.

Anhui, Fujian, Gansu, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangsu, Jiangxi, Shaanxi, Sichuan, Taiwan, SE Xizang, Yunnan, Zhejiang [Bhutan, India, Indonesia, Japan, Kashmir, Laos, Myanmar, Nepal, Pakistan, Philippines, Thailand, N Vietnam].

600-3300 m

Fl. Per.: August-September.

Open forests, grassy slopes; 500-2800 m.

Ruta albiflora Hooker, Exot. Fl. 1: t. 79. 1823; Bodinieria thalictrifolia H. Léveillé; Boenninghausenia albiflora var. brevipes Franchet; B. albiflora var. pilosa Z. M. Tan; B. brevipes (Franchet) H. Léveillé; B. japonica Siebold ex Miquel; B. schizocarpa S. Y. Hu; B. sessilicarpa H. Léveillé; Podostaurus thalictroides Junghuhn.

Boenninghausenia albiflora là một loài thực vật có hoa trong họ Cửu lý hương. Loài này được (Hook.) Rchb. ex Meisn. mô tả khoa học đầu tiên năm 1837.

臭节草（学名：Boenninghausenia albiflora），为芸香科石椒草属下的一个植物物种。