常绿小乔木。高2.5—8米,胸径3—12厘米,树皮淡黄至黄色,平滑。一年生枝红褐色,无毛;多年生枝灰黄色,具纵裂纹。叶革质,互生,叶柄扭转呈两行排列,椭圆形、矩圆形或矩圆状倒卵形,长5—10.5(15)厘米,宽2—3.5(5.2)厘米,先端锐尖或尾尖,基部楔形,全缘或近全缘(在幼苗和萌生枝上,具疏钝齿),上面黄绿色,有光泽,下面淡黄绿色,略被白粉;两面无毛,中脉在上面微隆起,在下面显著隆起。侧脉6—9对,在上面明显,在下面隐约可见。叶柄粗壮,长11—18毫米。花芽卵形,近顶生或腋生,单生或双生。花美丽,杯状,径8—9.5厘米,近无柄。苞片及萼片10—12(13),从外向内逐渐增大,花后宿存,革质,边缘干膜质,萼片卵圆形,长12—20毫米,宽10—18毫米,先端圆,红褐色,背部中央被银灰色绢毛,近边缘无毛;花瓣5—7(8),红色或淡红色,倒卵形,长3.5—5.7厘米,宽3.5—5厘米,先端微缺或呈2裂,最外面1—2(3)瓣背部中央被银灰 Evergreen small tree. Height 2.5-8 meters, diameter 3-12 cm, bark yellow to yellow, smooth. Annual branches reddish brown, glabrous; perennial branches grayish yellow, with longitudinal cracks. Leaves leathery, alternate, petiole twisted in two rows, oblong, oblong or oblong, obovate, 5-10.5 (15) cm long, 2-3.5 (5.2) cm wide, apex acute or caudate, base cuneate , Entire or nearly entire (with blunt teeth on seedling and adnate branches), yellowish green, shiny above, yellowish green below, slightly pale white; glabrous on both surfaces, midvein slightly raised above, prominent below Uplift. Lateral veins 6-9 pairs, evident above, vaguely visible below. Petiole stout, 11-18 mm long. Flower buds ovate, nearly terminal or axillary, solitary or both. Flowers beautiful, cupular, diameter 8-9.5 cm, nearly sessile. Bracts and sepals 10-12 (13), gradually increasing from outside to inside, persistent after anthesis, leathery, margin dry membranous, sepals ovoid, 12-20 mm long, 10-18 mm wide, apex rounded Petals 5-7 (8), red or pink, obovate, 3.5-5.7 cm long, 3.5-5 cm wide, apex emarginate or 2 Cleft, outermost 1-2 (3) The center of the petal is silver-gray