《中国植物志》|| 龙胆科 GENTIANACEAE ||头花系 Ser. Apteroideae (H. Smith) T. N. Ho ||五岭龙胆 Gentiana davidii Franch.

55. 五岭龙胆（中国高等植物图鉴）九头青、簇花龙胆、落地荷花、歇地龙胆、鲤鱼胆、矮杆鲤鱼胆 图版15:7-11
Gentiana davidii Franch. Pl. David. 1: 211. 1884: Forbes et Hemsl. in Journ. Linn. Soc. Bot. 26: 126. 1890; Kusnez. in Acta Hort. Petrop. 15: 273. 1898; Marq. in Kew Bull. 1937: 163. 1937; 林镕, 北平研究院丛刊6 (4): 219. 1949;中国高等植物图鉴3: 391. 图4735. 1974. ——G. atkinsonii Burk. in Journ. Asiat. Soc. Bengal n. ser. 2: 309. 1906: Marq. l. c. 164. syn. nov. ——Gentianodes davidii (Franch.) A. et D. Leve in Bot. Not. 125: 257. 1972.
多年生草本，高5-15厘米。须根略肉质。主茎粗壮，发达，有多数较长分枝。花枝多数，丛生，斜升，紫色或黄绿色，中空，近圆形，下部光滑，上部多少具乳突。叶线状披针形或椭圆状披针形，先端钝，基部渐狭，边缘微外卷，有乳突，叶脉1-3条，在两面均明显，并存下面突起；莲座丛叶长3-9厘米，宽0.6-1.2厘米，叶柄膜质，长0.5-1.1厘米；茎生叶多对，长1.3-5.5厘米，宽0.3-0.8厘米，叶柄长0.4-0.7厘米，愈向茎上部叶愈大，柄愈短。花多数，簇生枝端呈头状，被包围于最上部的苞叶状的叶丛中；无花梗；花萼狭倒锥形，长1.4-1.6厘米，萼筒膜质，全缘不开裂，裂片绿色，不整齐，2个大，3个小，线状披针形或披针形，长3-7毫米，先端渐尖，边缘有乳突，裂片间弯缺宽，截形；花冠蓝色，无斑点和条纹，狭漏斗形，长2.5-4厘米，裂片卵状三角形，长2.5-4毫米，先端具尾尖，全缘，褶偏斜，截形或三角形，长1-1.5毫米，全缘或边缘有不明显波状齿；雄蕊着生于冠筒下部，整齐，花丝线状钻形，长10-15毫米，花药狭矩圆形，长1.5-2毫米；子房线状椭圆形，长10-12毫米，两端渐狭，柄长5-7毫米，花柱线形，连柱头长4-6毫米，柱头2裂，裂片线形。蒴果内藏或外露，狭椭圆形或卵状椭圆形，长1.5-1.7厘米，两端渐狭，柄长至2.5-厘米；种子淡黄色，有光泽，近圆球形，长0.8-1毫米，表面具蜂窝状网隙。花果期（6）8-11月。
产湖南、江西、安徽、浙江、福建、广东、广西。生于山坡草丛、山坡路旁、林缘、林下，海拔350-2500米。模式标本采自福建西部。

《Flora of China》|| Gentianaceae || Gentiana ||五岭龙胆 Gentiana davidii

30. Gentiana davidii Franchet, Pl. David. 5: 211. 1884.

五岭龙胆 wu ling long dan

Perennials 3-15(-28) cm tall. Vegetative stems usually short; flowering stems simple, ascending, apically papillate, not horizontally elongated basally nor producing a basal rosette. Leaf blade linear-lanceolate to elliptic-lanceolate, base narrowed, margin slightly revolute and scabrous, apex acu-minate to obtuse, veins 1-3. Basal rosette leaves 3-5 pairs; petiole 5-11 mm, membranous; leaf blade 3-7 cm × 6-12 mm. Stem leaves 5-10 pairs, distinctly larger toward apex, apically crowded and subtending flower cluster; petiole 4-7 mm; leaf blade 1.3-5.5 × 3-8 mm. Inflorescences terminal clusters, (1-)3-10-flowered. Flowers sessile, 5merous. Calyx narrowly obconic, 0.9-1.6 cm, tube membranous; lobes 3-7 mm, very unequal, 2 larger and 3 smaller, linear-lanceolate to lanceolate, base ± narrowed, margin scabrous, apex acuminate, midvein distinct. Corolla blue, tubular-campanulate to funnelform, 1.5-4 cm; lobes ovate to triangular, 2.5-4 mm, margin entire, apex acute and caudate; plicae triangular or subtruncate, 0.5-2.5 mm, oblique, margin entire or denticulate, apex acute to subtruncate. Stamens inserted at basal part of corolla tube; filaments 0.6-1.5 cm; anthers narrowly ellipsoid, 1.5-2 mm. Style 4-6 mm; stigma lobes linear. Capsules narrowly ellipsoid to ovoid-ellipsoid, 1-1.7 cm; gynophore to 2.5 cm. Seeds light brown, subglobose, 0.6-1 mm. Fl. and fr. Aug-Nov.

* 300--3000 m. Anhui, Fujian, Guangdong, Guangxi, Hainan, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Taiwan, Zhejiang