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



Page. 

 Oreolirion arizonicum (Rothr.) Bicknell 147 



Sisyrinchium arizonicum Rothr. 



Quercus emoryiXpungens Woot. & Standi 169 



Quercus griseaXemoryi Woot. & Standi 170 



Quercus arizonicaXgrisea 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 terrestre R. Br. 

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



Cassia wrightii A. Gray. 

 Astragalus proximus (Rydb.) Woot. & Standi 366 



Homalobus proximus Rydb. 

 Astragalus impensus (Sheld.) Woot. & Standi 369 



Astragalus viridis impensus Sheld. 

 Oxytropis richardsoni (Hook.) Woot. & Standi 370 



Oxytropis splendens richardsoni Hook. 

 Oxytropis pinetorum (Heller) Woot. & Standi 371 



Aragallus pinetorum Heller. 

 Oxytropis vegana (Cockerell) Woot. & Standi 371 



Aragallus pinetorum veganus Cockerell. 

 Polygala parvifolia (Wheelock) Woot. & Standi 392 



Poly gala lindheimeri parvifolia Wheelock. 

 Tithymalopsis strictior (Holzinger) Woot. & Standi 396 



Euphorbia strictior Holzinger. 

 Stillingia smallii 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 viridifiora ivesii Britton. 

 Nyctelea micrantha (Torr.) Woot. & Standi 535 



Phacelia micrantha Torr. 

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



Dicliptera torreyi A. Gray. 

 772 



