A FLORISTIC SURVEY OF VASCULAR PLANTS OVER PARTS OF NORTHEASTERN NEW MEXICO

摘要

A floristic survey was completed in northeastern New Mexico, including all of Harding, Mora, and Sari Miguel counties, most of Colfax Count),, and Quay County north of Interstate 40. Prior to this stud), the approximately 41,000 km(2) (ca. 15,800 m(3)) study area, much of which is private land, had not been systemically surveyed for its plant diversity. A total of 9,619 specimens were collected during 2004 and 2005, which included 93 farm lies, 437 genera, 911 species, and 956 Laxa. Rorippa teres,Chertopodium berlandieri var. betlandieri, Artermisia ludoviciana var. incompta, Tefrarieuris torreyana and Rosa x harisonii (escaped from cultilvation) were confirmed as state records. Approximately 9.3% of the flora (89 taxa) was non-native, including11 species listed as "noxious" by the state of New Mexico. The collection methods, an overview of climate and geology, and discussion of vegetation types are included. The annotated checklist includes scientific names and authorities, total number of collections, counties represented with one voucher per county cited, habitat types, and elevational range lot each taxon. Species accumulation curves for the five most frequently collected habitats suggest strongly that additional taxa will he found in eachhabitat. A Sorenson index was used to calculate floristic similarity of the Kiowa National Grasslands in New Mexico (within the study area) with that of the Pawnee and Comanche National Grasslands in Colorado. The first analysis, which included all plant taxa, indicated that the grasslands separated by the greatest distance had the least similarity. The second analysis, which excluded non-native taxa, increased the similarity values, which suggested that many exotic taxa are not shared between the three Grasslands.