LIST OF NEW GENERA, SPECIES, AND HYBRIDS, AND NEW NAMES. 



Page. 

 Oreolirion arizonicum (Rothr.) Bicknell 147 



S isyrinchium arizonicum Rothr. 



Quercus emoryiXpungens Woot. & Standi 169 



Quercus griseaXemoryi Woot. & Standi 170 



Quercus arizonicaXgnsea Woot. & Standi 171 



Razoumofskya microcarpa (Engelm.) Woot. & Standi 179 



Arceuthobium douglasii microcarpum Engelm. 

 Alsine cuspidata (Willd.) Woot. & Standi 236 



Stellaria cuspidata Willd. 

 Radicula terrestris (R. Br.) Woot. & Standi 284 



Nasturtium tenestre R. Br. 

 Chamaecrista wrightii (A. Gray) Woot. & Standi 335 



Cassia wrightii A. Gray. 

 Astragalus proximus (Rydb.) Woot. &, Standi 366 



Homalobu^ proximus Rydb. 

 Astragalus impensus (Sheld.) Woot. & Standi 369 



Astragalus viridis impermis Sheld. 

 Oxytropis richardsoni (Hook.) Woot. & Standi 370 



Oxytropis splendens richardsoni Hook. 

 Oxytropis pinetorum (Heller) Woot. & Standi 371 



Aragalhis pinetorum Heller. 

 Oxytropis vegana (Cockerell) Woot. & Standi 371 



Aragallus pinetorum veganus Cockerell. 

 Polygala parvifolia (\\Tieelock) Woot. & Standi 392 



Polygala lindheimeri parvifolia "^Tieelock. 

 Tithyraalopsis strictior (Holzinger) Woot. & Standi 396 



Euphorbia strictior Holzinger. 

 Stillingia smaUii Woot. & Standi 405 



Stillingia salicifolia Small, 1903, not Baill. 1865. 

 Trionum trionum. (L.) Woot. & Standi 417 



Hibiscus trionum L. 

 Hibiscus involucellatus (A. Gray) Woot. & Standi 417 



Hibiscus denudatus involucellatus A. Gray. 

 Sidanoda (Robinson) Woot. & Standi 427 



Anoda section Sidanoda Robinson. 

 Sidanoda pentaschista (A. Gray) Woot. & Standi 427 



Anoda pentaschista A. Gray. 

 Echinocereus rosei Woot. & Standi 457 



Echinocereus polyacanthus Engelm. err. det. Standley, 1908. 

 Raimannia mexicana (Spach) Woot. & Standi 470 



Oenothera mexicana Spach. 

 Acerates ivesii (Britton) Woot. & Standi 509 



Asclepias viridiflora ivesii Britton. 

 Nyctelea micrantha (Torr.) Woot. & Standi 535 



Phacelia micrantha Torr. 

 Diapedium torreyi (A. Gray) Woot. & Standi 598 



Dicliptera torreyi A. Gray. 



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