柱蕊茶 Camellia cylindracea T.L.MingCamellia cylindracea

Camellia cylindracea T.L.Ming in Acta Bot. Yunnan. 16: 343 (1994)

Tree, young branches are sturdy, light green, glabrous. Leaves are thick leathery, oblong, 15-20 cm long, 6-8 cm wide, obtuse at the apex, deeply cordate at the base, clasping the stem, with fine serrations on the margins, dark green on both sides, glabrous, shiny on the surface, with brown glandular dots on the back, the midrib is flat or slightly concave on the surface, raised on the back, with 10-14 pairs of lateral veins, raised on both sides; petiole is 3-5 mm long, sturdy, glabrous, and grooved on the upper surface. Flower red, solitary in the axil of the upper branch or near the top, pedicel 1.5-2cm long, erect, thickened upwards; bracteoles 5-6, spirally arranged on the pedicel, semicircular or broadly ovate, 1-4mm long, 1.5-4.5mm wide, leathery, glabrous on both sides or powdery pubescent inside, persistent; sepals 5, leathery, round or nearly round, 8-10mm long, 7-9mm wide, glabrous outside, powdery pubescent inside, persistent; petals 11-14, Broadly obovate or obovate, 2-3.5cm long, 1.5-2.5cm wide, with rounded tip, the base of the inner whorl of petals growing together for up to 5mm; stamens numerous, 4 whorls, about 3cm long, 1/2 of the outer whorl of filaments fused into a tube, the filament tube and the separated part are yellow pubescent, the inner whorl of filaments are free, and the lower half is pubescent; ovary oblong, 7mm long, about 3mm thick, glabrous, 5-chambered, style fused, 2-2.3cm long, glabrous, 5-lobed at the tip, about 5mm long. Fruit not seen.

This species is only known from the type specimen that was collected Phu Tho, Vietnam.

Camellia cylindracea has most recently been assessed for The IUCN Red List of Threatened Species in 2015. Camellia cylindracea is listed as Data Deficient.

Phu Tho, Vietnam

柱蕊茶(云南植物研究） Camellia cylindracea T.L.Ming in Act.Bot.Yunn.16 (4) ：343, fig.1. 1994 et 21(2)： 152. 1999.Type：Vietnam,Phu tho,Hoc.Vien Nong Lam Khoa Lam Hoc.s .n.23, Jan.1961,Herb.KUN no.54473(KUN).

乔木，幼枝粗壮,淡绿色，无毛。叶厚革质，长圆形，长15-20厘米，宽6-8厘米，先端钝，基部深心形，抱茎，边缘具细锯齿，两面深绿色，无毛，表面有光泽，背面具褐色腺点，中脉在表面平或微凹，背面隆起，侧脉10-14对，两面突起；叶柄长3-5毫米，粗壮，无毛，上面具槽。花红色，单生于小枝上部叶腋或近顶端,花梗长1.5-2厘米，直立，向上增粗;小苞片5-6枚，螺旋状排列于花梗上，半圆形或阔卵形，长1-4毫米，宽1.5-4.5毫米，革质，两面无毛或里面被粉状微柔毛，宿存;萼片5,革质，圆形或近圆形，长8-10毫米，宽7-9毫米，外面无毛，里面被粉状微柔毛，宿存;花瓣11-14,阔倒卵形或倒卵形，长2-3.5厘米，宽1.5-2.5厘米，先端圆形，内轮花瓣基部连生长达5毫米;雄蕊多数，4轮，长约3厘米，外轮花丝1/2合生成管，花丝管和分离部分被黄色微柔毛，内轮花丝离生，下半部被微柔毛;子房长圆柱形，长7毫米，粗约3毫米，无毛,5室，花柱合生，长2-2.3厘米，无毛，先端5裂，长约5毫米。果未见。

分布越南北部。越南富寿，海桥，越南科学院，无号，1961年1月23日采，中科院昆明植物所标本馆54473(模式):54474(KUN)。

柱蕊茶最近一次于 2015年进行了IUCN濒危等级评估，被评为数据缺乏 Data Deficient（DD）。

越南富寿