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7份; DNA材料21份; DNA3份;

• 科:菊科    Asteraceae
• 属:火绒草属   Leontopodium
• 种:弱小火绒草   Leontopodium pusillum

25. Leontopodium pusillum (Beauverd) Handel-Mazzetti, Beih. Bot. Centralbl., Abt. 2. 44: 97. 1927. 弱小火绒草 ruo xiao huo rong cao Leontopodium alpinum Cassini var. pusillum Beauverd, Bull. Soc. Bot. Genève 2: 251. 1910; L. alpinum var. frigidum Beauverd.Herbs, perennial, subpulvinate. Rhizome slender and many branched, with dense radical rosettes of sterile leaves and numerous flowering stems. Stems 2-7 cm tall, densely leafy, densely white tomentose. Leaves spatulate to oblong-spatulate; radical leaves 10-25 × 2-4 mm, cauline leaves 10-20 × 2-3 mm, both surfaces densely white tomentose, base narrowed, apex obtuse. Capitula (1-)3-7, densely congested, 5-6 mm in diam.; bracteal leaves numerous, similar to cauline leaves, congested, forming star of 1.5-2.5 cm in diam. Involucre 3-4 mm, abaxially white lanate; phyllaries 3-seriate, apex usually dark brown, acute, glabrous. Corolla 2.5-3 mm. Achenes glabrous or slightly papillose. Pappus white, serrulate. Fl. Jul-Aug, fr. Aug-Sep.Alpine grasslands, rocky screes, gravelly slopes, salt lake banks and shores; 3500-5600 m. Qinghai, W Sichuan, Xinjiang, Xizang [India (Sikkim), Kashmir].【引自：Flora of China】

矮小多年生草本，根状茎分枝细长，丝状，有疏生的褐色短叶鞘，后叶鞘脱落，长达6厘米，或更长，顶端有1个或少数不育的或生长花茎的莲座状叶丛；莲座状叶丛围有枯叶鞘，散生或疏散丛生。花茎极短，高2-7厘米，或达13厘米，细弱，草质，被白色密茸毛，全部有较密的叶，节间极短至长达15毫米。叶匙形或线状匙形，下部叶和莲座状叶在花期生存，长达3厘米，宽达0.2-0.4或达0.5厘米，有长和稍宽的鞘部，茎中部叶直立或稍开展，长1-2厘米，宽0.2-0.3厘米，顶端圆形或钝，无明显的小尖头，边缘平，下部稍狭，无柄，草质，稍厚，两面被白色或银白色密茸毛，常褶合。苞叶多数，密集，与茎上部叶多少同形，多少同长，宽约2-3毫米，基部较急狭，两面被白色密茸毛，较花序稍长或长达2倍，通常开展成径约1.5-2.5厘米的苞叶群。头状花序径约5-6毫米，3-7个密集，稀1个。总苞长3-4毫米，被白色长柔毛状茸毛；总苞片约3层，顶端无毛，宽尖，无色或深褐色，超出毛茸之上。小花异形或雌雄异株。花冠长2.5-3毫米；雄花花冠上部狭漏斗状，有披针形裂片；雌花花冠丝状。冠毛白色；雄花冠毛上端棒状粗厚或稍细而有毛状细锯齿；雌花冠毛细丝状，有疏细锯齿。不育的子房无毛；瘦果无毛或稍有乳头状突起。花期7-8月。 【引自：中国植物志】