封面植物介绍——九翅豆蔻

Introduction of the Plant Front Cover:Amomum maximum

九翅豆蔻（Amomum maximum Roxburgh）隶属于姜科（Zingiberaceae）豆蔻属。多年生草本,株高2~3m,茎丛生。叶片长椭圆形或长圆形,长30~90cm,宽10~20cm,顶端尾尖,基部渐狭,下延,叶面无毛,叶背及叶柄均被白绿色柔毛;植株下部叶无柄或近于无柄,中部和上部叶的叶柄长1~8cm;叶舌2裂,长圆形,长约1.2~2cm,被稀疏的白色柔毛,叶舌边缘干膜质,淡黄绿色。穗状花序近圆球形,直径约5cm.

Amomum maximum Roxburgh belongs to Zingiberaceae . Perennial plant, 2 - 3 m tall. Ligule pale yellow-green, oblong, 2-cleft, 1. 2 - 2 cm,sparsely white pubescent; petiole absent to 8 c m ; leaf blade o b -long or long elliptic, 30 -90 × 10 -20 cm,adaxially glabrous, abaxially white villous, base attenuate, decurrent,apex caudate. Spikes subglobose, ca. 5 cm in diam. ; bracts bro w n i s h,2 - 2. 5 cm, pubescent,deciduous. Calyx pale purple spotted adaxially,ca. 2. 3 cm,apex 3-toothed; teeth lanceolate,ca. 5 m m . Corolla tube slightly longer than calyx; lobeswhite, oblong. Labellum white,yellow on each side of m i d -vein ,red striate at base, ovate, ca. 3. 5 cm, apex slightly revolute, entire. Filament short; anther linear,1-1. 2 cm ; connective appendage yellowish, crescent-shaped, apex slightly revolute. Capsule purple- green, ovoid,2. 5 - 3× 1. 8 - 2. 4 cm , 9-winged,white pubescent; pedicel 7 - 10 m m . Flowering from May to June and fruiting from June to August.