摘要
本文研究了产于滇西腾冲上新世芒棒组一种被子植物叶型化石垂丝紫荆(比较种)Cerciscf.racemosaOliv.,归于豆科紫荆属。揭示了该种叶表皮构造特征:上表皮无气孔器,表皮细胞为多边形,垂周壁平直;下表皮具环列型气孔器,表皮细胞为多边形,垂周壁平直;上下表皮有相同类型的毛基,毛基的根部由多细胞组成,毛基部的细胞特化成辐射状。该化石表皮微细构造的分析为恢复腾冲上新世古环境提供了古植物证据。
A fossil leaf of angiosperm collected from Tengchong in Western Yunnan Province is studied and is identified as Cereis ef. raeemosa Oliv, which belongs to Cercis Linn of Leguminosae. The epidermal characteristic of the species is described as follows： no stomata in the upper epidermis, cells hexagonal in shape, anticlinal walls even; stomata eyelocytic in the lower epidermis, cells hexagonal in shape, anticlinal walls even, trichome base muhicellular and radial in specialization. The analysis on Cereis ef. raeemosa Oliv provides the palaeobotanical evidence for the reconstruction of Tengchong in Pliocene.
出处
《甘肃地质》
2007年第1期7-10,I0001,共5页
Gansu Geology
基金
国家自然科学基金(编号:40502005)资助
关键词
上新世
滇西
垂丝紫荆
表皮构造
pliocene
Western Yunnan
cercis racemosa
epidermal structure
