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柳兰广布种在中国的变异式样及其分类学

1陈家瑞, 2彼得·霍克, 2彼得·雷文   

  1. 1(中国科学院植物研究所,北京)    2(美国密苏里植物园,圣路易斯)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1988-04-18 发布日期:1988-04-18
  • 通讯作者: 陈家瑞

Variation Patterns and Systematics of the Widespread Species Epilobium angustifolium L.(Onagraceae) in China

1Chen Chia-Jui, 2Hoch Peter C., 2Raven Peter H.   

  1.  1 (Institute of Botany, Academia Sinica, Beijing)
    2 (Missouri Botanical Garden, St. Louis, Missouri, USA)
  • Received:1900-01-01 Revised:1900-01-01 Online:1988-04-18 Published:1988-04-18
  • Contact: Chen Chia-Jui

摘要:

    本文着重对分布于中国的柳兰Epilobium angustifolium L.进行了细胞学,形态学,花粉
    学及地理学研究,发现有二倍体(n=18)和四倍体(n=36)及其相关形态学性状和分布区,
    认为把不同种宗处理作二个亚种——柳兰subsp.angustifolium(二倍体)和毛脉柳兰subsp.
    circumvagum  Mosquin(多倍体)是适宜的。不同倍性柳兰的花粉直径、花粉孔数、叶背面中脉
    毛被及叶片宽度不同(Mosquin,1966),我们还观察到叶片基部形状、叶缘、花序轴毛被等也
    是区别不同倍性柳兰的好性状。柳兰的形态学差异是染色体倍性决定的,这是以多倍化形式
    进化的又一例证。本文报道了11号柳兰样品染色体计数,其中6号为二倍体,5号为四倍体,
    后者在亚洲为首次报道。柳兰的细胞地理学资料表明:柳兰可能是温带起源,在喜马拉雅地
    区柳兰可能是从东西不同方向分别进入这个地区的。

关键词: 中国, 柳兰, 复合种, 变异式样, 细胞学, 分类学, 地理学

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.

Key words: China, Epilogium angustifolium, Complex, Variation patterns, Cytology, Syste-