作 者 ：Zhang Jin-Tan (Chang King-Tang), Zhang Da-Wei
期 刊 ：植物分类学报 1991年 4期
Keywords:Pollen morphology,
Abstract:
The present paper describes the pollen morphology of 11 species of thc genus
Corylopsis (Hamamelidaceae). The pollen grains were all examined with light microscope and
scanning electron microscope.
Pollen grains of the genus are prolate, spheroidal or subprolate. Three size types are recog-
nized: (l) 18-23 μm, found in Corylopsis omeiensis Yang, C.gotoana Makino, C. himalayana
Griff and C.platypetala Rehd. et Wils. (2) 24-32μm, found in C. sinensis Hemsl., C.willmottiae
Rehd. et Wils., C.veitchiana Bean, C. brevistyla H.T.Chang, C.multiflora Hance, C.pauciflora
Sieb. et Zucc. and C.spicata Sieb. Zucc. (3) 34-39μm, found in C. wilsonii Hemsl. and C. cordata
Merrill. Pollen grains are 3-colpate and 4-colpate (only infrequently found in Corylopsis
sinensis Hemsl.); the exine is 2-layered, 1.25-2.50μm thick, distinctly reticulate, sexine al-
most equal to nexine in thickness. From the pollen morphology the genus is considered as a natu-
ral group.