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
Bothalia ◽  
1993 ◽  
Vol 23 (1) ◽  
pp. 25-47 ◽  
Author(s):  
N. P. Barker

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.


Copeia ◽  
1989 ◽  
Vol 1989 (2) ◽  
pp. 478 ◽  
Author(s):  
Dean A. Hendrickson ◽  
Alejandro Varela Romero

2014 ◽  
Vol 9 (6) ◽  
pp. 1934578X1400900 ◽  
Author(s):  
Cynthia R. Wright ◽  
Emanuel A. Waddell ◽  
William N. Setzer

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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