目前为止，中国西南野生生物种质资源库共保藏该物种: 种子9份; DNA材料34份; DNA4份; 离体材料1310份;

• 科:石竹科    Caryophyllaceae
• 属:金铁锁属   Psammosilene
• 种:金铁锁   Psammosilene tunicoides

1. Psammosilene tunicoides W. C. Wu & C. Y. Wu, Icon. Pl. Medic. Libro Tien-Nan-Pen-Tsao Lanmaoano. 1: t. 1. 1945. 金铁锁 jin tie suo Silene cryptantha Diels, Notes Roy. Bot. Gard. Edinburgh 5: 180. 1912, not Viviani (1824).Roots brown-yellow. Stems prostrate, purple-green, 20--35 cm, dichotomously branched, pubescent. Leaves subsessile, 1.5--2.5 × 1--1.5 cm, adaxially pilose, base rounded, rarely broadly cuneate, apex entire, acute. Inflorescence a thyrse with a terminal, lax dichasium and 2 opposite, similarly lax and many-flowered dichasia proximally. Flowers 3--5 mm in diam. Pedicel short or flowers sessile. Calyx tubular-campanulate, 4--6 mm, densely glandular pubescent, veins green; calyx teeth triangular-ovate, margin membranous, apex obtuse or acute. Petals 7--8 mm. Stamens exserted beyond calyx, 7--9 mm; anthers yellow. Ovary narrowly obovoid, ca. 7 mm; styles ca. 3 mm. Capsule ca. 7 mm. Seed brown, ca. 3 mm. Fl. Jun--Sep, fr. Jul--Oct.* Warm and dry valleys along Jinsha Jiang and Yarlung Zangbo Jiang, rocky mountain slopes, dry pastures, calcareous rock crevices, forests; 900--3800 m. W Guizhou, SW Sichuan, SE Xizang, Yunnan.This species is used medicinally.【引自：Flora of China】

多年生草本。根长倒圆锥形，棕黄色，肉质。茎铺散，平卧，长达35厘米，2叉状分枝，常带紫绿色，被柔毛。叶片卵形，长1.5-2.5厘米，宽1-1.5厘米，基部宽楔形或圆形，顶端急尖，上面被疏柔毛，下面沿中脉被柔毛。三歧聚伞花序密被腺毛；花直径3-5毫米；花梗短或近无；花萼筒状钟形，长4-6毫米，密被腺毛，纵脉凸起，绿色，直达齿端，萼齿三角状卵形，顶端钝或急尖，边缘膜质；花瓣紫红色，狭匙形，长7-8毫米，全缘；雄蕊明显外露，长7-9毫米，花丝无毛，花药黄色；子房狭倒卵形，长约7毫米；花柱长约3毫米。蒴果棒状，长约7毫米；种子狭倒卵形，长约3毫米，褐色。花期6-9月，果期7-10月。 【引自：中国植物志】