作 者 ：1Chen Chia-Jui, 2Hoch Peter C., 2Raven Peter H.
期 刊 ：植物分类学报 1988年 2期
Keywords:China, Epilogium angustifolium, Complex, Variation patterns, Cytology, Syste-
matics, Geography,
Abstract:
Cytological, morphological, and geographical studies of Epilobium angustifolium
in China reveal two partly distinct, partly overlapping entities that are best treated as subspe-
cies. The diploid (n=18) subsp. angustifolium has smaller, triporate pollen grains, typically
glabrous stems and leaves, and smaller leaves and flowers, and occurs in colder, more northern
areas, and at higher elevations in overlap zones. The tetraploid (n=36) subsp. circumva-
gum has larger pollen with a mixture of quadriporate pollen grains, pubescent stems and
leaves, and larger leaves and flowers, and occurs in warmer parts of southern China and at
lower elevations. We report 11 chromosome counts, six diploid and five tetraploid, including
the first reported tetraploids in Asia.