弄岗金花茶 Camellia longgangensis C.F.Liang & S.L.MoCamellia longgangensis

Evergreen shrub, 2.0-3.0m high. The bark is yellowish-brown. Shoots cylindrical, olive-brown, glabrous; The old branches are light brown. The leaf buds are conical and light green. The young leaves are light brown. The old leaves are thin leathery, oblong-ovate, 7.4-11.6 cm long, 3.4-4.0 cm wide, the leaf margin is finely serrate, the apex is caudate-acuminate, the base is broadly wedge-shaped to rounded, the front is dark green, the back is light green with black glandular spots, the lateral veins are 5-8 pairs, the main vein and lateral veins are concave on the leaf surface and convex on the leaf dorsal surface, the reticulated veins are inconspicuous on the leaf surface and are clearly visible on the leaf back, the petiole is 0.7-1.2 cm long, glabrous. The flower buds are nearly spherical. The flowers are pale yellow, solitary or in clusters of 2-3 flowers, apical or axillary, diameter 4.2-6.2 cm, peduncle 0.7-1.2 cm long, bracts 3-8, semicircular, sepals 5-6, green, ovate, inner and margins covered with white short hairs, persistent, petals 9-11, oval or ovate, veins faintly visible, outer ring petals with small purplish-red patches, inner wheel petals with white short hairs at the base, filaments 0.8-1.6 cm long, 5-6 cylindrical arrangement, outer wheel base connatate, inner wheel detached, glabrous, columella 3, 0.8-1.2 cm long, about the same height as stamens, glabrous, detached, ovary nearly spherical, smooth and glabrous, 3-chambered. Capsule triangular oblate spherical or oblate spherical, brown or purple-brown, diameter 2.2-4.6 cm, height 2.0-2.5 cm, weight 12.7-28.9 g, peel thickness 1.2-1.6 mm. Seeds 1-3 per chamber, nearly spherical, hemispherical or triangular spherical, brown, covered with brown short hairs. The flowering period is from September to October, and the fruit ripening period is from May to June. 【Origin】This species is endemic to China, distributed in Longzhou, Guangxi, and grows in limestone evergreen broad-leaved forests at an altitude of 150-290m. 【Key points of identification】The young leaves of this species are light brown, and the old leaves are long ovate; The flowers are pale yellow, the peduncle is long, and the outer petals have small purplish-red patches.

弄岗金花茶 Camellia longgangensis C. F. Liang et S. L. Mo南宁市金花茶公园，2021.《国内外金花茶物种图鉴》，广西科学技术出版社，第66-67页。【形态特征】常绿灌木，高2.0-3.0m。树皮黄棕色。嫩枝圆柱形，橄榄棕色，无毛；老枝浅棕色。叶芽锥形，浅绿色。嫩叶浅棕色。老叶薄革质，长卵形，长7.4-11.6cm，宽3.4-4.0cm，叶缘有细锯齿，先端尾状渐尖，基部宽楔形至圆形，正面深绿色，背面浅绿色有黑色腺点；侧脉5-8对；主脉和侧脉在叶面凹陷，在叶背凸起；网脉在叶面不明显，在叶背明显可见；叶柄长0.7-1.2cm，无毛。花蕾近球形。花淡黄色，单生或2-3朵簇生，顶生或腋生，直径4.2-6.2cm；花梗长0.7-1.2cm；苞片3-8枚，半圆形；萼片5-6枚，绿色，卵形，内侧与边缘被白色短茸毛，宿存；花瓣9-11枚，椭圆形或卵形，瓣面脉纹隐约可见，外轮花瓣有较小紫红色斑块，内轮花瓣基部被白色短茸毛；花丝长0.8-1.6cm，5-6轮筒状排列，外轮基部合生，内轮离生，无毛；花柱3条，长0.8-1.2cm，约与雄蕊等高，无毛，离生；子房近球形，光滑无毛，3室。蒴果三角状扁球形或扁球形，棕色或紫棕色，直径2.2-4.6cm，高2.0-2.5cm，重12.7-28.9g，果皮厚1.2-1.6mm。种子每室1-3粒，近球形、半球形或三角状球形，褐色，被棕色短茸毛。花期9-10月，果熟期5-6月。【原产地】该种是中国的一个特有种，分布于广西龙州，生长在海拔150-290m的石灰岩常绿阔叶林中。【识别要点】该种嫩叶浅棕色，老叶长卵形；花淡黄色，花梗较长，外轮花瓣有较小紫红色斑块。