封面植物介绍--裸果木

Introduction of the Plant Front Cover:Gymnocarpos przewalskii

裸果木(Gymnocarpos przewalskii Bunge ex Maxim.)隶属于石竹科裸果木属,起源第三纪,是古地中海残遗珍稀濒危植物,别名“瘦果石竹”。多年生落叶半灌木,株高50-100 cm。叶线形,长5-20 mm,宽1-1.5 mm,近无柄,顶端短尖,基部稍收缩,偏肉质,表面覆蜡质层,无被毛,无明显叶脉;托叶膜质鳞片状;叶对生或互生。茎有两种形态,直立或曲折,节间膨大,多分枝;老枝灰褐色,剥裂,嫩枝红褐色。

Gymnocarpos przewalskii Bunge ex Maxim.belongs to Gymnocarpus of Caryophyllaceae,a rare and endangered ancient Mediterranean relict plant,alias‘achene caryophyllum’,Perennial deciduous sub-shrub,50-100 cm tall.Leaves linear,5-20 long and 1-1.5 mm wide,sessile,acute apex,contracted base,fleshy,waxy layer on surface,glabrous,no obvious veins.Stipules membranous,scaly.Opposite or alternate leaves.Stems exist in two forms,erect or tortuous,with inflated nodes and multi-branch.