栏目

峨眉火绒草Leontopodium omeiense Ling

峨眉火绒草Leontopodium omeiense Ling

别名:峨嵋火绒草;

科名:菊科 Compositae

属名:火绒草属 Leontopodium

《中国植物志》第75卷088页
  6. 峨眉火绒草 图版15: 8-11
  Leontopodium omeiense Ling, 植物分类学报, 10, 2: 172. 1965.
  多年生草本。根出条细长,稍木质,平卧或斜升,有枯萎宿存的叶和顶生的叶丛,在叶丛上生长花茎。花茎常直立,长5-18厘米,不分枝,被白色棉状密茸毛,全部有叶,节间长1-2.5厘米。基部叶密集成莲座状,顶端圆形,在花期生存。叶狭披针形或倒披针状长圆形,长3-4厘米,宽2.5-4毫米,顶端稍尖,下部稍狭,无柄,质薄,上面被蛛丝状毛,不久脱毛,下面被白色密茸毛;侧脉不显明;苞叶多数密集,与茎上部叶同形或较宽,长25毫米,宽达8毫米,顶端尖或稍尖,下部较狭,两面被白色或稍褐色厚棉状茸毛或下面被较薄的密茸毛,上面顶端有时脱毛,较花序约长2倍,开展成径约3-5.5厘米的苞叶群。头状花序5-9个,径4.5-5.5毫米,花序梗与苞叶基部合着,长达4毫米。总苞长约4毫米,被白色厚茸毛;总苞片约3层,顶端钝,褐色,露出茸毛之上。小花异形,边缘有少数雌花,或雌雄异株。花冠长3毫米;雄花花冠管状漏斗状,雌花花冠丝状。冠毛较花冠稍长,白色或基部稍黄色;雄花冠毛上端较粗厚,有细锯齿;雌花冠毛细丝状,有细齿。不育的子房和瘦果有乳头状突起或短粗毛。花期5-7月;果期6-7月。
  产四川峨眉山。生于低山或亚高山山谷岩石上。海拔1700-2400米。
  此种与上种最接近,但花茎非木质,有较少的叶(茎部叶8-13个,最少3个,最多18个),苞叶被较厚密的棉状茸毛,子房和瘦果有毛。韩马迪在他的川西火绒草 L. wilsonii Beauv. 的讨论中 [Hand. -Mazz., in Beih. Bot. Centralbl. 44 (2): 70] 所述的峨眉山植物:“有被棉状长茸毛的苞叶和不同的茎和叶”,可能即是此种。
形态特征:—多年生草本。根出条细长,稍木质,平卧或斜升,有枯萎宿存的叶和顶生的叶丛,在叶丛上生长花茎。花茎常直立,长5—18厘米,不分枝,被白色棉状密茸毛,全部有叶,节间长1-2.5厘米。基部叶密集成莲座状,顶端圆形,在花期生存。叶狭披针形或倒披针状长圆形,长3—4厘米,宽2.5—4毫米,顶端稍尖,下部稍狭,无柄,质薄,上面被蛛丝状毛,不久脱毛,下面被白色密茸毛;侧脉不显明;苞叶多数密集,与茎上部叶同形或较宽,长25毫米,宽达8毫米,顶端尖或稍尖,下部较狭,两面被白色或稍褐色厚棉状茸毛或下面被较薄的密茸毛,上面顶端有时脱毛,较花序约长2倍,开展成径约3—5.5厘米的苞叶群。头状花序5—9个,径4.5—5.5毫米,花序梗与苞叶基部合着,长达4毫米。总苞长约4毫米,被白色厚茸毛;总苞片约3层,顶端钝,褐色,露出茸毛之上。小花异形,边缘有少数雌花,或雌雄异株。花冠长3毫米;雄花花冠管状漏斗状,雌花花冠丝状。冠毛较花冠稍长,白色或基部稍黄色;雄花冠毛上端较粗厚,有细锯齿;雌花冠毛细丝状,有细齿。木育的子房和瘦果有乳头状突起或短粗毛。花期5—7月;果期6—7月。
产地分布:产四川峨眉山。生于低山或亚高山山谷岩石上。海拔1700—2400米。
本种提示:此种与上种最接近,但花茎非木质,有较少的叶(茎部叶8—13个,最少3个,最多18个),苞叶被较厚密的棉状茸毛,子房和瘦果有毛。韩马迪在他的川西火绒草L.WilsoniiBeauv.的讨论中[Hand.·Mazz.InBeih.Bot.Centralbl.44(2);70]所述的峨眉山植物:“有被棉状长茸毛的苞叶和不同的茎和叶”,可能即是此种。
参考文献:Leontopodium omeiense Ling,植物分类学报,10,2:172.1965.

《Flora of China》 Vol. 20-21 (2011)
Leontopodium omeiense  Y. Ling Acta Phytotax. Sin. 10: 172. 1965.
峨眉火绒草   e mei huo rong cao
Herbs, perennial. Rhizome slender and usually branched, subwoody, erect or procumbent, densely covered with brown decayed leaves with dense radical rosettes of sterile leaves and numerous filiform radicals. Stems solitary or 3 or 4, usually 5-10(-18) cm tall, not branched, with 5-15(-30) leaves, entire plant light gray tomentose, but subglabrous on abaxial surface of leaves; stems sometimes not developed and plant forming sessile heads, not exceeding ca. 3 cm in height. Leaves lanceolate, lanceolate-oblong, or oblong-spatulate, 20-25 × 2.5-4.5 mm, abaxially white and densely covered with light gray tomentum, adaxially covered with sparse light gray tomentum and appearing greenish, lateral veins indistinct, base narrowed, apex obtuse or acute. Capitula 5-9, unisexual, dioecious, or heterogamous, 4.5-5.5 mm in diam.; bracteal leaves 9-12, densely arranged, oblong, larger than upper leaves, forming a star of 3-5.5 cm in diam., both surfaces densely grayish white tomentose, apex acute or obtuse. Phyllaries ca. 3-seriate, ovate, ca. 4 mm, apex obtuse, abaxially often green, brown to almost black adaxially. Corolla ca. 3 mm; corolla of male floret funnelform; corolla of female floret filiform. Achenes papillose. Pappus white, longer than corolla, serrulate. Fl. May-Jun, fr. Jun-Aug.
● Moist rocks; 1800-2800 m. SE Gansu, W Sichuan.

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