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A review of the taxonomy and a study of the ecological status, of Lilium superbum L., an endangered species in Illinois.

机译：伊利诺伊州濒危物种百合百合的分类学研究和生态状况研究。

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摘要

This dissertation emphasizes the lift history of Lilium superbum L., and contains data whose interpretation is intended to be useful in making informed decisions as to the best way to bring about its recovery. The literature review presented chronologically traces the taxonomic treatment of the species and views concerning its proper status from the earliest known pre-Linnean description to those of the present. Disagreements regarding species delineation are noted and the author's position is presented. L. superbum and L. michiganense are compared, a description of L. superbum is given, and Illinois ecotypes are compared with North Carolina ecotypes via morphological and chromatographic methods. Climatic data of southern Illinois were characterized with consideration given to air temperature, soil temperature, and precipitation. Southern Illinois climatic data were compared with data from weather stations near the center of L. superbum's range in North Carolina. The geological character of L. superbum's range is described and illustrated. The question concerning origin of the species in southern Illinois is discussed and the author offers a hypothesis considered most plausible. L. superbum's response to moisture, sunlight, soil texture, soil pH, heat, pathogenic fungi, herbivory, floods, storms, and humans are examined and conditions considered optimal for growth by horticultural authors are listed. Sexual and asexual modes of reproduction are delineated with consideration given to advantages and disadvantages of each. Experimental studies of pollen viability, pollination, seed germination, and cloning are described, and the results evaluated. The habitat is characterized in descriptions of lily study sites in Illinois and North Carolina. This was accomplished by gathering, comparing, and evaluating data regarding the woody overstory and understory, herbaceous understory, soil cover, texture, and pH, soil and air temperatures, proximity to water, elevation, and slope along with average stem height and density, and amount of space occupied by the lily populations. Community structure, composition, and similarity of the two regions were compared, and a recovery plan is promulgated in which goals are outlined and recommendations listed.
机译：本文着重论述了百合百合的举升历史，并包含其解释旨在有助于做出明智的决定以实现其复原的最佳方法的数据。文献综述按时间顺序追溯了该物种的分类学处理方法，并从最早的已知林恩时代描述到当前的描述，都对该物种的适当地位提出了看法。记录了关于物种划分的分歧，并提出了作者的立场。比较了L. superbum和密歇根L. superbum，给出了L. superbum的描述，并通过形态学和色谱法将伊利诺伊州的生态型与北卡罗来纳州的生态型进行了比较。考虑到气温，土壤温度和降水，对伊利诺伊州南部的气候数据进行了表征。将伊利诺伊州南部的气候数据与北卡罗来纳州L. superbum范围中心附近的气象站的数据进行了比较。描述并举例说明了L. superbum范围的地质特征。讨论了有关伊利诺伊州南部物种起源的问题，作者提供了一个最合理的假设。研究了L. superbum对水分，阳光，土壤质地，土壤pH，热量，病原真菌，食草，洪水，暴风雨和人类的反应，并列出了园艺作者认为最适合生长的条件。考虑到每种生殖方式的优缺点，描绘了有性和无性生殖方式。描述了对花粉生存力，授粉，种子萌发和克隆的实验研究，并对结果进行了评估。该生境的特征是对伊利诺伊州和北卡罗来纳州的百合研究地点进行了描述。这是通过收集，比较和评估有关木质上层和下层，草本下层，土壤覆盖，质地和pH值，土壤和空气温度，与水的接近度，海拔和坡度以及平均茎高和密度的数据来完成的，和百合种群所占的空间量。比较了两个地区的社区结构，组成和相似性，并颁布了恢复计划，其中概述了目标并列出了建议。

著录项

  • 作者

    Dishong, Danny Lee.;

  • 作者单位

    Southern Illinois University at Carbondale.;

  • 授予单位 Southern Illinois University at Carbondale.;
  • 学科 Botany.;Forestry.;Ecology.
  • 学位 Ph.D.
  • 年度 1996
  • 页码 286 p.
  • 总页数 286
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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