目前为止，中国西南野生生物种质资源库共保藏该物种: DNA材料4份;

• 科:樟科    Lauraceae
• 属:润楠属    Machilus
• 种:红楠   Machilus thunbergii

6. Machilus thunbergii Siebold & Zuccarini, Abh. Math.-Phys. Cl. K?nigl. Bayer. Akad. Wiss. 4(3): 302. 1846. 红楠 hong nan Litsea coreana H. Léveillé, p.p. (as to Taquet 1356); Machilus arisanensis (Hayata) Hayata; M. kwashotensis Hayata; M. macrophylla Hemsley var. arisanensis Hayata; M. nanshoensis Kanehira; M. taiwanensis Kamikoti; M. thunbergii var. kwashotensis (Hayata) Yamamoto; M. thunbergii var. trochodendroides Masamune; Persea arisanensis (Hayata) Kostermans; P. thunbergii (Siebold & Zuccarini) Kostermans.Evergreen trees, usually 10-15(-20) m tall; trunk 65-130 cm d.b.h. Bark yellowish brown. Older branchlets rough; young branchlets purple-brown when fresh, glabrous. Buds ovoid or oblong-ovoid; bud scales golden brown or reddish brown, suborbicular, leathery, ciliate, apex rotund, outer scales puberulent, inner ones tomentose outside. Petiole slender, 1-3.5 cm, reddish when fresh; leaf blade lustrous on both surfaces, abaxially glaucescent, obovate to obovate-lanceolate, 4.5-9(-13) × 3-6 cm, leathery, glabrous on both surfaces, midrib distinctly elevated abaxially, somewhat impressed adaxially, lateral veins 7-12 pairs, slightly straightly ascendant, nearly curved at margin, veinlets obscure, base cuneate, apex obtuse or abruptly cuspidate. Inflorescences arising from base of young shoots, 5-11.8 cm, branched at upper part of peduncle, glabrous, many flowered. Pedicel 6-9 mm. Perianth lobes oblong, ca. 5 mm, outer ones narrower, slightly short, apex acute, glabrous outside, pubescent toward apex inside. Filaments glabrous, those of 3rd series with stipitate glands at base. Staminodes hispid at base. Ovary globose, glabrous; style slender; stigma capitate. Fruit green becoming dark purple, compressed globose, 8-10 mm in diam.; peduncle and fruiting pedicel reddish purple. Fl. Feb, fr. Jun-Aug.Mountain slopes or valleys, broad-leaved forests; below 800 m. Anhui, Fujian, Guangdong, Guangxi, Hunan, Jiangsu, Jiangxi, Shandong, Taiwan, Zhejiang [Japan, Korea].【引自：Flora of China】

常绿中等乔木，通常高10-15(20)米；树干粗短，周围可达2-4米；树皮黄褐色；树 冠平顶或扁圆。枝条多而伸展，紫褐色，老枝粗糙，嫩枝紫红色，二、三年生枝上有少数纵 裂和唇状皮孔，新枝、二、三年生枝的基部有顶芽鳞片脱落后的疤痕数环至多环。顶芽卵形 或长圆状卵形，鳞片棕色革质，宽圆形，下部的较小，中部的较宽，先端圆形，背面无毛，边缘有小睫毛，上部鳞片边缘的毛浓密。叶倒卵形至倒卵状披针形，长4.5-9（13）厘米，宽1.7-4.2厘米，先端短突尖或短渐尖，尖头钝，基部楔形，革质，上面黑绿色，有光泽，下较淡，带粉白，中脉上面稍凹下，下面明显突起，侧脉每边7-12条，斜向上升，稍直，至近叶缘时沿叶缘上弯，多少呈波浪状，侧脉间有不规则的横行脉，小脉结成小网状，在嫩叶上可见，构成浅窝穴，在老叶的两面上常不太明显；叶柄比较纤细，长1-3.5厘米，上面有浅槽，和中脉一样带红色。花序顶生或在新枝上腋生，无毛，长5-11.8厘米，在上端分枝；多花，总梗占全长的2/3,带紫红色，下部的分枝常有花3朵，上部的分枝的花较少；苞片 卵形，有棕红色贴伏绒毛；花被裂片长圆形，长约5毫米，外轮的较狭，略短，先端急尖，外面无毛，内面上端有小柔毛；花丝无毛，第三轮腺体有柄，退化雄蕊基部有硬毛；子房球形，无毛；花柱细长，柱头头状；花梗长8-15毫米。果扁球形，直径8-10毫米，初时绿色，后变黑紫色；果梗鲜红色。花期2月，果期7月。 【引自：中国植物志】