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长叶钩子木Rostrinucula sinensis (Hemsl.) C. Y. Wu

长叶钩子木Rostrinucula sinensis (Hemsl.) C. Y. Wu

别名:长叶钩子;

科名:唇形科 Labiatae

属名:钩子木属 Rostrinucula

《中国植物志》第66卷350页
  2.长叶钩子木 长叶钩子(植物分类学报10卷3期)图版71
  Rostrinucula sinensis (Hemsl.) C. Y. Wu in Act. Phytotax. Sin. 10(3): 233. Pl. XLIII. 1965——Leucosceptrum sinense Hemsl. in Journ. Linn. Soc. Bot. 26: 310. 1890; Levl. Fl. Kouy-Tcheou 209. 1914; Dunn in Notes Bot. Gard. Edinburgh 8: 171. 1913; in ibid. 6: 192. 1915; Kudo in Mem. Fac. Sci. Agr. Taihoku Univ. 2: 301. 1929; Rehd. in Journ. Arn. Arb. 16: 311. 1935; Kitamura et Murata in Act. Phytotax. Geobot. 20: 168. 1962——Elsholtzia cavaleriei Levl. et Vaniot in Fedde, Repert. Sp. Nov. 8: 424. 1910——Leucosceptrum bodinieri Levl. in Fedde, Repert. Sp. Nov. 9: 224. 1911.
  灌木。枝圆柱形,径约4.5厘米,褐色,具条纹,初时密被粉末状绒毛,其后近于无毛,先端为下垂的穗状花序,小枝多数,密被粉末状绒毛,先端亦往往为下垂的穗状花序,枝及小枝均有充满白色的大髓部。叶片坚纸质,长圆形至长圆状披针形,长5.5-14.5厘米,宽1.5-3厘米,先端急尖,基部圆形或近圆形,除基部1/3-1/4全缘外具细圆齿状锯齿,上面绿色,无毛,下面密被白色星状绒毛,侧脉5-9,上升,在边缘之内网结,与中脉在上面略凹陷下面隆起;叶柄短,长0.3-0.5厘米,具沟,密被白色星状绒毛。穗状花序顶生,纤长下垂或俯垂,密被白色星状绒毛,圆柱形,长8-25厘米,花时径达1.5厘米,由轮伞花序密集组成,轮伞花序具6-10花,其下承以交互对生的成对苞片及小苞片;苞片卵状圆形,长7毫米,宽6毫米,先端微渐尖,边缘稍内卷,外面密被白色绒毛,内面无毛,交互对生,早落,小苞片近线形,长约3毫米,毛被同苞片。花萼钟形,外面密被星状绒毛,内面无毛,10脉,萼齿5,三角状卵圆形,先端急尖,近等大,前2齿较宽。花冠长5-6毫米,外面于伸出萼筒部分被星状绒毛及小腺点,内面在前裂片基部的花冠喉部新月形冠状突起及花丝基部有不规则的毛环,冠筒长4-5毫米,伸出,冠檐二唇形,上唇直伸,圆状卵圆形,全缘,长约1毫米,下唇开张或直立开张,3裂,中裂片较大,长3毫米,内凹,侧裂片圆状卵圆形。雄蕊4,十分伸出,伸出花冠几达一倍,花丝无毛,基部具毛盘状突起,被柔毛,花药近圆形,1室,横向开裂。花柱无毛,超出于雄蕊很多,先端2浅裂。花盘杯状,边缘具不规则的波状齿,长为子房1/3。子房褐色,具星状绒毛及腺点。未成熟小坚果三稜状长圆形,长2毫米,先端具长0.5毫米近于直立的喙,黄褐色,具腺点。花期10月。
  产湖北,贵州,湖南,广西;生于路旁、山坡及悬岩上,海拔约1000米。模式标本采自湖北长阳。

《Flora of China》 Vol. 17 (1994)
Rostrinucula sinensis  (Hemsley) C. Y. Wu
长叶钩子木   chang ye gou zi mu
Leucosceptrum sinense Hemsley, J. Linn. Soc., Bot. 26: 310. 1890; Elsholtzia cavaleriei H. Léveillé & Vaniot; L. bodinieri H. Léveillé.
Branches and branchlets ca. 4.5 mm in diam., brown, striate, densely dusty tomentose, subglabrescent. Petiole 3-5 mm; leaf blade oblong to oblong-lanceolate, 5.5-14.5 × 1.5-3 cm, papery, adaxially glabrous, abaxially densely white stellate tomentose, base rounded, margin crenulate-serrulate, apex acute. Spikes cylindric, 8-25 × to 1.5 cm in flower, densely white stellate tomentose; verticillasters 6-10-flowered; bracts decussate, ovate-orbicular, ca. 7 × 6 mm, apex subacuminate. Calyx teeth triangular-ovate, apex acute. Corolla 5-6 mm; tube 4-5 mm, exserted; limb spreading or erect-patent, middle lobe ca. 3 mm, concave. Immature nutlets triquetrous, oblong, ca. 2 mm, apical beak ca. 0.5 mm, suberect. Fl. Oct.
* Hills, cliffs; ca. 1000 m. Guangxi, Guizhou, Hubei, Hunan.

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