中文名（Chinese Name）：暗罗
学名（Scientific Name）：Polyalthia suberosa (Roxb.) Thw.
英文名（English Common Name）：
别名（Chinese Common Name）：眉尾木、老人皮
异名（Synonym）：Guatteria suberosa Dunal  Uvaria suberosa Roxb. 
科属（Family & Genus）：番荔枝科（Annonaceae）暗罗属
形态特征（Description）：小乔木，高达5米；树皮老时栓皮状，灰色，有极明显的深纵裂；枝常有白色凸起的皮孔，小枝纤细，被微柔毛。叶纸质，椭圆状长圆形，或倒披针状长圆形，长6-10厘米，宽2-3.5厘米，顶端略钝或短渐尖，基部略钝而稍偏斜，叶面无毛，叶背被疏柔毛，老渐无毛；侧脉每边8-10条，纤细，上面不明显，下面略明显；叶柄长2-3毫米，被微柔毛。花淡黄色，1-2朵与叶对生；花梗长1.2-2厘米，被紧贴的疏柔毛，中部以下有1小苞片；萼片卵状三角形，长约2毫米，外面被疏柔毛；外轮花瓣与萼片同形，但较长，内轮花瓣长于外轮花瓣约1-2倍，外面被柔毛，内面无毛；雄蕊卵状楔形，药隔顶端截形；心皮卵状长圆形，被柔毛，柱头卵圆形，被柔毛，每心皮有胚珠1颗，基生。果近圆球状，直径4-5毫米，被短柔毛，成熟时果红色；果柄长5毫米，被短柔毛。花期几乎全年，果期6月-翌年春季。
分布（Distribution）：产于广东南部和广西南部。生于低海拔山地疏林中。印度、斯里兰卡、缅甸、泰国、越南、老挝、马来西亚、新加坡和菲律宾等也有。
用途（Use）：
引自中国植物志英文版FOC Vol. 19 Page 691, 692, 695
Polyalthia suberosa (Roxburgh) Thwaites, Enum. Pl. Zeyl. 398. 1864.
暗罗 an luo  | Annonaceae  | Polyalthia
Uvaria suberosa Roxburgh, Pl. Coromandel 1: 31. 1795; Guatteria suberosa (Roxburgh) Dunal.
Shrubs or small trees, to 5 m tall. Bark corky, ridged. Branchlets dark red, rust-colored pubescent when young, glabrescent, with pink lenticels and corky ridges when older. Petiole 2-4 mm, puberulent; leaf blade oblong, elliptic-oblong, or narrowly obovate-oblong, 5-11 × 2-4 cm, membranous to papery, abaxially pale brown when dry and glabrescent, adaxially gray and glabrous except for sparse pubescence along midvein, secondary veins 8-10 on each side of midvein, spreading, and inconspicuous on both surfaces, reticulate veins lax and inconspicuous, base narrowed and slightly oblique, apex subobtuse to rounded and sometimes abruptly shortly acuminate. Inflorescences extra-axillary, leaf-opposed, or slightly below leaf, 1(or 2)-flowered. Pedicel 0.7-2.5 cm, puberulent; bracteole near base of pedicel, minute, apex acute. Sepals ovate-triangular, 2-2.5 mm, outside pubescent, inside glabrous. Petals yellowish green; outer petals oblong-lanceolate, shorter than inner petals, leathery, flat and spreading, outside slightly pubescent, inside glabrous, apex acute; inner petals oblong, erect and curved, ca. 10 mm, apex obtuse. Stamens many, ca. 1 mm; connectives apically convex. Carpels many, ca. 2 mm, pubescent; ovules 1 or 2 per carpel; styles widening into a thickly triangular bladelike glabrous stigma. Monocarp stipes 8-10 mm, slender; monocarps to 18, red, almost spherical, ca. 5 mm in diam., sparsely appressed pubescent or glabrescent. Seeds 1 or 2 per monocarp, with a longitudinal circumferential band. Fl. almost year-round, fr. Jun-Dec. 2n = 18.
Open forests at lower elevations. S Guangdong, S Guangxi, Hainan [India, Laos, Malaysia, Myanmar, Philippines, Sri Lanka, Thailand, Vietnam].（责任编辑：徐晔春）