Iva annua var. macrocarpa: Extinct American Cultigen?1
Iva annua var. macrocarpa: Extinct American Cultigen?1
复制标题
Iva annua 变种。
DOI：
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发表时间：
1972
期刊：
影响因子：
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通讯作者：
R. A. Yarnell
中科院分区：
文献类型：
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作者：
R. A. Yarnell
在从堪萨斯城和欧扎克延伸到肯塔基州东部和北卡罗来纳州西部的考古遗址中，发现了非常大的苏木瘦果。占领时间从公元前1千年初到公元2世纪上半叶。瘦果的大小从最早遗址的略大于现代瘦果，到后来遗址的现代长度的两倍。这被认为是驯化下进化的证据。
Exceptionally large sumpweed achenes have been recovered from archaeological sites in the region extending from Kansas City and the Ozarks to eastern Kentucky and western North Carolina. Dates of occupation range from early first millennium B.C. to the first half of the second millennium A.D. Achene size progressed from slightly larger than modern achenes at the earliest sites to double the modern length at later sites. This is taken as evidence of evolution under domestication.