Name: Southwestern Rare and Endangered Plants: Proceedings of the Fourth Conference (en Inglés)
Price: 81505.00 COP
Availability: InStock
Author: Usda Forest Service
ISBN: 9781511530699

portada Southwestern Rare and Endangered Plants: Proceedings of the Fourth Conference (en Inglés)

Southwestern Rare and Endangered Plants: Proceedings of the Fourth Conference (en Inglés)

Formato

Libro Físico

Autor

Usda Forest Service

Editorial

Createspace

Idioma

Inglés

N° páginas

140

Encuadernación

Tapa Blanda

Dimensiones

28.0 x 21.6 x 0.8 cm

Peso

0.34 kg.

ISBN13

9781511530699

Categorías

Naturaleza y mundo natural: interés general

Southwestern Rare and Endangered Plants: Proceedings of the Fourth Conference (en Inglés)

Usda Forest Service (Autor) · Createspace · Tapa Blanda

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Reseña del libro "Southwestern Rare and Endangered Plants: Proceedings of the Fourth Conference (en Inglés)"

Unusual soils, compared to surrounding common soils, act as edaphic habitat islands and often harbor rare plants. These edaphic elements can be disjuncts or endemics. Two rare wild buckwheats from southeastern Arizona that grow on Tertiary lacustrine lakebed deposits have been found to be a disjunct, and an endemic. Eriogonum apachense from the Bylas area is determined to be a disjunct expression of E. heermannii var. argense, a Mojave Desert taxon from northern Arizona and adjacent California and Nevada, not a distinct endemic species. At a historical location of E. apachense near Vail, Arizona, a new species of Eriogonum, also in subgenus Eucycla, was discovered growing on mudstones of the Oligocene Pantano Formation. It was also recently found on outcrops of the Plio-Pleistocene Saint David Formation above the San Pedro River near Fairbank, Arizona.