Jiukeng Dachashu

Jiukeng Dachashu （Camellia sinensis）Yao Mingzhe et al. 2024. Records of Chinese Tea Cultivars and Resources (Volume III)-Precious Wild Tea Trees. p. 232 with detail description together with 5 photos in one plate on next page. Basic Information: [Variety Type] Local variety; [Place of Origin] Chun'an County, Hangzhou City, Zhejiang Province; [Conservation Location] Chun'an County, Zhejiang Province; [Observation Location] Chun'an County, Zhejiang Province. Botanical Characteristics and Biological Traits: [Tree] Shrub, semi-open growth habit, strong vigor. [New Shoots] One bud one leaf stage in late March, one bud two leaves stage in early April, buds and leaves yellow-green, medium pubescence, one bud three leaves length 7.8 cm, weight of 100 buds at one bud three leaves stage 68.0 g. [Leaves] Leaves grow upward at an angle, leaf length 11.3 cm, leaf width 4.2 cm, leaf area 33.2 cm², medium leaf, elliptic; 9 pairs of lateral veins, leaf dark green, leaf surface raised, leaf blade inwardly folded, leaf texture medium; teeth sharpness sharp, density medium, depth medium, leaf base wedge-shaped, leaf tip gradually pointed, leaf margin wavy. [Flowers] Peak flowering in mid-November, 5 sepals, green, hairless; corolla diameter 3.9 cm, 7 petals, white; ovary pubescent, style length 1.4 cm, 3-lobed style, lobes high, pistil prominent. [Fruits and Seeds] Fruit spherical, fruit diameter 2.1 cm; seed spherical or hemispherical, seed diameter 1.2 cm, seed coat brown, weight of 100 seeds 142.4 g. Quality Traits: Suitable for making green tea. Water extraction 41.5%, caffeine 4.0%, tea polyphenols 26.3%, free amino acids 4.5%. Resistance Traits: Strong cold resistance.

鸠坑大茶树（Camellia sinensis ‘Jiukeng Dachashu’）. 姚明哲等，2024.《中国茶树品种资源志（下）--茶树野生珍稀资源》第232页，含 5幅图片。基本信息：【品种类型】地方品种；【原产地】浙江省杭州市淳安县；【保存地】浙江省淳安县；【观测地点】浙江省淳安县。植物学特征和生物学特性：【树体】灌木，树姿半开张，生长势强。【新稍】一芽一叶期3月下旬，一芽二叶期4月上旬，芽叶黄绿色、茸毛中等，一芽三叶长7.8cm，—芽三叶百芽重68.0g。【叶片】叶片着生上斜，叶长11.3cm，叶宽4.2cm，叶面积33.2cm²，中叶，呈椭圆形；侧脉9对，叶色深绿，叶面隆起，叶身内折，叶质中；叶齿锐度锐、密度中、深度中，叶基楔形，叶尖渐尖，叶缘波折。【花】盛花期11月中旬，萼片5枚、绿色、无茸毛；花冠直径3.9cm，花瓣7枚、白色；子房有茸毛，花柱长1.4cm，花柱3裂，裂位高，雌蕊高。【果实和种子】果实球形，果径2.1cm；种子球形或半球形，种径1.2cm，种皮棕褐色，种子百粒重142.4g。 品质性状：适制绿茶。水浸出物41.5%，咖啡碱4.0%，茶多酚26.3%，游离氨基酸4.5%。   抗性性状：耐寒性强。