Description and Conservation Status of Cyprinodon macularius eremus, A New Subspecies of Pupfish from Organ Pipe Cactus National Monument, Arizona

Copeia ◽  
1987 ◽  
Vol 1987 (3) ◽  
pp. 593 ◽  
Author(s):  
Robert Rush Miller ◽  
Lee A. Fuiman
Keyword(s):  
Conservation Status ◽  
New Subspecies ◽  
National Monument ◽  
Organ Pipe ◽  
Cyprinodon Macularius

A biosystematic study of Pentameris (Arundineae, Poaceae)

Bothalia ◽  
1993 ◽  
Vol 23 (1) ◽  
pp. 25-47 ◽  
Author(s):  
N. P. Barker
Keyword(s):  
New Species ◽  
Leaf Blade ◽  
Conservation Status ◽  
New Subspecies ◽  
Biosystematic Study ◽  
Fruit Characters

A biosystematic study of the endemic southwestern Cape grass genus Pentameris Beauv. is presented. Results of studies on the macro- and micromorphology, leaf blade anatomy and cytology are discussed and illustrated. The results of a cladistic study indicate that the genus is monophyletic, united by the synapomorphies of ovary and fruit characters. The conservation status of the taxa in the genus is assessed, and conservation status codes allocated. A key to the taxa in the genus is presented, and each species is described. Five new species,  Pentameris glacialis N.P. Barker, P. hirtiglumis N.P. Barker, P. oreophila N.P. Barker,  P. swartbergensis N.P. Barker and  P. uniflora N.P. Barker, and one new subspecies,  P. longiglumis (Nees) Stapf subsp. gymnocolea N.P. Barker, are described and illustrated.

Conservation Status of Desert Pupfish, Cyprinodon macularius, in México and Arizona

Copeia ◽  
1989 ◽  
Vol 1989 (2) ◽  
pp. 478 ◽  
Author(s):  
Dean A. Hendrickson ◽  
Alejandro Varela Romero
Keyword(s):  
Conservation Status ◽  
Desert Pupfish ◽  
Cyprinodon Macularius

scholarly journals Accumulation of Silicon in Cacti Native to the United States: Characterization of Silica Bodies and Cyclic Oligosiloxanes in Stenocereus thurberi, Opuntia littoralis, Opuntia ficus-indica, and Opuntia stricta

2014 ◽  
Vol 9 (6) ◽  
pp. 1934578X1400900 ◽  
Author(s):  
Cynthia R. Wright ◽  
Emanuel A. Waddell ◽  
William N. Setzer
Keyword(s):  
United States ◽  
Essential Oils ◽  
The United States ◽  
Gas Chromatography Mass Spectrometry ◽  
Opuntia Ficus Indica ◽  
National Monument ◽  
Stenocereus Thurberi ◽  
Organ Pipe ◽  
Santa Catalina Island

Four different cactus species growing in the United States, Stenocereus thurberi growing in Organ Pipe Cactus National Monument, Arizona, Opuntia littoralis and Opuntia ficus-indica, growing on Santa Catalina Island, California, and Opuntia stricta, growing in northern Alabama, were examined for the presence of silica bodies (opaline phytoliths). Silica bodies were found in all four of these cactus species, parallelepiped-shaped crystals in S. thurberi, and starburst-shaped crystalline structures in the three Opuntia species. In addition, the essential oils of the four cactus species were obtained by hydrodistillation and analyzed by gas chromatography – mass spectrometry. To our surprise, S. thurberi, O. littoralis, and O. ficus-indica (but not O. stricta) essential oils contained cyclic oligosiloxanes. To our knowledge, cyclic oligosiloxanes have not been previously found as essential oil components.

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