Contributions to the systematic position of Hydrolea (Hydroleaceae) based on floral development

被引：0

作者：

C. Erbar

S. Porembski

P. Leins

机构：

[1] Universität Heidelberg,Institut für Biodiversitätsforschung: Allgemeine und Spezielle Botanik

[2] HIP - Biodiversität und Pflanzensystematik,undefined

[3] Universität Rostock,undefined

来源：

Plant Systematics and Evolution | 2005年 / 252卷

关键词：

Flower morphology; flower ontogeny; Hydrolea; Solanales;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

In the flower of Hydrolea palustris, unusually orientated with one sepal abaxially, organogenesis starts in following sequence: five sepals (2/5 sequence), five simultaneously initiated alternating petals, five episepalous stamens, two (seldom three) carpels forming a coenocarpous septate gynoecium. The two carpels are orientated rather in the diagonal floral plane than in the median one. Petal primordia fuse very late by forming interprimordial bridges (late sympetaly!). Many ovules develop on considerably widened placentas. On the very basis of the superior ovary a five-humped nectary disk is formed.

引用

页码：71 / 83

页数：12

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