大厂茶 Camellia tachangensis F.S.ZhangCamellia tachangensis

Camellia tachangensis, Subgenus Thea, Sect. Thea, Ser. Quinquelocularis Chang, Acta Sci. Nat. Univ. Sunyatseni, 1981(1):89. 1981. Chang Hung-ta and Bruce Bartholomew (1984). Camellias, p.141: Camellia tachangensis Zhang, Acta Bot. Yunnanica 2: 341. 1980. [Description] Tree, 10-15 m tall, trunk diameter ca. 40 cm; bark relatively thin, greyish-white, nearly smooth; branching usually rather low and sparse, internodes 4-7 cm long, firstyear branches reddish-brown, strongly fragrant when cut; terminal buds pale yellow, relatively large, bud bracts imbricate, persistent, glabrous. Leaves coriaceous, relatively thin, ovate or oblong, 14-16(-18) cm long, 4-6 (-8) cm wide, apices acute orcaudate, bases cuneate or rounded, margins shallowly and densely serrate, leaf surfaces flat, dark green, shiny, lateral veins 8-9 pairs, reticulating veins conspicuous, midveins yellowish-green; petioles 5 mm long glabrous. Flowers white, 6-8 cm in diameter, solitary or 2-3 in laf axils; pedicels 1-1. 5 cm long; sepals 5-6, glabrous, rotundate orbroadly ovate; petals 11-13 (-15), basally connate, broadly ovate; stamens many, 1/5 less than the length of the pistil, filaments 14 mm long, free, basally connate; pistil 1. 7cm long, ovaries superior, conical, ca. 1.5 mm long, 3-locular, glabrous; styls 5-parted, divided for 1/5 their length. Capsules oblate, 3-4(-5) cm in diameter, ca. 2 cm high, apices indented, persistent sepals tightly attached to the base; pericarp purplish-green when ripe, rough; fruit pedicel 2 cm long, 2-4 mm thick; seeds 1-3 per locule, nearly globose, greyish-brown. Flowering period August to October. Fruit ripe the following September to October. This species is similar to C. taliensis except that the leaves are larger, 14-16 (-18) cm long, 4-6 (-8) cm wide; flowers larger, 6-8 cm in diameter; ovaries glabrous. It differsfrom C. irrawadiensis in that the latter has leaves much smaller 8-11.5 cm long, 3-4 cmwide; styles 4-parted; ovaries puberulent. [Synonym]Camellia tetracocca Chang, Acta Sci. Nat. Univ. Sunyatseni1981(1):90. 1981, syn. nov.

Gao Jiyin, Clifford R. Parks, Du Yueqiang, 2005, Collected Species of the Genus Camellia an Illustrated Outline，p.226. Flowers are white, 3.0-5.0 cm in diameter, borne at the tips of shoots and in leaf axils. Pedicels 7-14 mm long, glabrous. Bracts and sepals 7-9, outer surface glabrous. Petals 10-12. 2.0-3.0 cm long, tip rounded, slightly fused at the base. Androecium glabrous, 1.2-2.0 cm long, outer filaments fused at the base into a short cup. Gynoecium 1.3 cm long, 3-5 styles cleft at the tip, ovary glabrous. Blooming season: late autumn to early winter. Capsules globose to oblate, 2.0-4.5 cm in diameter, 3-5 locules, pericarp wall 1-2 mm thick. Leaves elliptic or oblong, tip short-acute, base cuneate, 9.0-15.0 cm long, 3.5-6.0 cm wide, serrulate, upper surface glabrous, midrib light purple, lower surface glabrous, midribs and lateral veins raised on both sides of blade. Petioles 5-8 mm long, glabrous. Shrub or small tree up to 10m tall, young shoots glabrous, purple-brown, older branches smooth and gray-brown in color. Distribution: Eastern Yunnan Province, northwestern Guangxi and western Guizhou Province; Elevation: 1,500-2,000 m; Specific locality: Dachang, Shizong, Yunnan Province, China.

Camellia tachangensis has most recently been assessed for The IUCN Red List of Threatened Species in 2015. Camellia tachangensis is listed as Least Concern.

四球茶Camellia tachangensis Chang, sp. nov. 张宏达，1981. 《山茶属植物的系统研究》第112页。【标本】贵州：普安，普白林场，贵州农产品采购局02(模式标本Typus! in Bot. Inst. Peking)。【形态特征】小乔木，嫩枝及顶芽均无毛。叶薄，近膜质，椭圆形，长12-16厘米，宽4-5厘米，先端锐尖，基部楔形，上面暗晦，下面无毛，侧脉10-12对，以70°-80°开角斜行，边缘有细锯齿，叶柄长4-6毫米。蒴果压扁四球形，宽3-3.5厘米，高1.5-1.7厘米，4室，每室有种子1个，果皮无毛，4爿裂开，果爿木栓质或软木质，厚2-3毫米；种子近球形，直径1.4-1.7厘米，种皮浅褐色；宿存萼片长5-6毫米，外面无毛。

高继银、帕克斯、杜跃强，2005. 《山茶属植物主要原种彩色图集》浙江科学技术出版社，第226页。花白色，花径3.0~5.0厘米，顶生或腋生。花柄长7~14毫米，无毛。苞片和萼片7~9枚，表面无毛。花瓣10~12枚，长2.0~3.0厘米，倒卵圆形，先端圆，基部略连生。雄蕊无毛，1.2〜2.0厘米，外轮花丝基部连生形成短管。雌蕊长1.3厘米，花柱先端3~5裂，子房无毛。花期秋末至冬初。蒴果圆球形或扁球形，直径2.0~4.5厘米，3~5室，果皮厚1~2毫米。叶椭圆形至长圆形，先端急短尖，基部楔形，长9.0~15.0厘米，宽3.5~6.0厘米，边缘具齿，叶面无毛，中脉泛紫色，叶背无毛，中脉和侧脉两面凸起。叶柄长5~8毫米，无毛。小乔木或乔木，高可达10米，嫩枝无毛，紫褐色，老枝光滑，灰褐色。分布：云南省东部、广西壮族自治区西北部和贵州省西 部，海拔1500-2000米。可寻地点:云南省师宗大厂。

大厂茶最近一次于 2015年进行了IUCN濒危等级评估，被评为无危 Least Concern（LC）。