摘 要 ：用扫描电子显微镜对中国鸡矢藤属(Paederia L.) 6种1变种植物的花粉进行观察。结果表明:鸡矢藤属植物的花粉均为单粒，辐射对称，小型或中型，极面观3-裂圆形至钝三角形，赤道面观呈长圆球形或近长球形，具3个萌发沟，无内萌发孔。外壁纹饰网状、细网状或穿孔状，孔边缘具小刺状突起或无。臭鸡矢藤(P. foetida)和白毛鸡矢藤(P. pertomentosa)具有花粉二型现象，其中白毛鸡矢藤(P. pertomentosa)是首次报道。花粉二型现象与花柱二型现象可能没有直接的关联性，与前人的观点一致。推测鸡矢藤属外壁纹饰的可能演化趋势为：穿孔、网状、细网状→粗网状；网眼内无棒状突起→网眼内有棒状突起。鸡矢藤属花粉的外壁纹饰变化较大，且无内萌发孔，是茜草科花粉过渡类型的特征。
Abstract:The pollen morphology of six species and one variety of Peaderia L. were observed under SEM. The results showed that pollen grains of Peaderia were single, small or medium-sized, radially symmetric and tricolpate, with spheroidal or subprolate in equatorial view and three-lobed circular to obtuse triangular in the polar view, endoaperture absent. The exine ornamentation of pollen grains were perforate, microreticulate or reticulate, spinulescent or not. Pollen dimorphism was found in P. foetida and P. pertomentosa, in which P. pertomentosa was reported for the first time. It was consistent with the previous view that pollen dimorphism is not linked with style heterostyly. The evolutionary trend of exine ornamentation may be in order as: perforate, microreticulate or reticulate¬ →coarsely reticulate; rod-like luminal processes absent → rod-like luminal processes present. The pollen morphological characteristics of Peaderia belong to transition type in Rubiaceae.