Mainæ (mān´ī͜͡ē) MacDougalii (măk do͞o´gȧl ē) Mammilla (măm mĭl´lȧ) Mammillaria (măm mĭl lā´rē ȧ) Macrocentra (mä krō cĕn´trä) Mesa (mā´sȧ) Mojave (mō hä´vā) Mojavensis (mō hä vĕn´sēs) Nogales (nō găl´ĕs) Oliviæ (ō lĭv´ĭ ī͜͡ē) Olla (ŏl´ȧ); _commonly_ (ôy´ȧ) Opuntia (ō pŭn´shĭ ȧ) Papago (pä pȧ gō´) Parryi (păr´rĭ ē) Pima (pē´mȧ) Pentagonus (pĕn tä gō´nüs) Platopuntia (plăt ō pŭn´shĭ ȧ) Polyacanthus (pŏl ĭ ä kän´thüs) Polyancistrus (pŏl ĭ än cĭs´trüs) Polycephalus (pŏl ĭ cĕf´ä lüs) Pitahaya (pĭt ȧ hī´yȧ) Pringlei (prĭn´gȧl ē) Recurvata (rā ko͞or vä´tä) Rigidissimus (rĭj ĭ dĭs´sĭ müs) Robustispina (rō bŭs tĭs pē´nä) Rosei (rōz´ē) Rostii (rŏs´tĭ ē) San Gorgonio (săn gôr gôn´ē ō) San Bernardino (săn bēr när dē´nō) Sahuaro (sȧ wah´rō) San Luis Potosí (săn lü ēs´ pôt ō sē´) Santa Monica (săn tȧ mŏn´ĭ kȧ) Santa Rita (săn tȧ rē´tȧ) Schottii (shŏt´ĭ ē) Senilis (sĕn´ĭl ĭs) Serpentinus (sĕr pĕn tē´nüs) Sonora (sō nôr´ȧ) Spinosior (spin ō´sĭ ôr) Stanlyi (stăn´lĭ ē) Tasajo (tȧ sä´hō) Tetrancistera (tĕt rän cĭs tĕr´ä) Tetracantha (tĕt rä kän´thä) Thornberi (thôrn´bēr ē) Thurberi (thŭr´bēr ē) Toumeyi (to͞o´mē ē) Tucson (to͞o sŏn´) Versicolor (vēr sĭ´cȯl ôr) Viridescens (vĭr ĭ dĕs´ĕns) Viridiflora (vĭr ĭd ĭ flôr´ä) Visnaga (vĭs nä´gȧ) Visnagita (vĭs nȧ gē´tȧ) Whipplei (whĭp´pȧl ē) Wislizeni (wĭs lĭ zĕn´ē) INDEX A Areola, 30-31 Arizona Pincushion, 44, 59-60 B Baby Cacti, 32-61 Barrel Cacti, 123, 154-84 Beaver Tail, 100, 115 Bent Spine Pincushion, 50-51 _Bergorocactus Emoryi_, 5 Bisnaga, 123, 154-84 Black Spined Pincushion, 45, 61 Brown Pincushion, 42, 55 Buckhorn Cholla, 127, 143-44 Bunny Cactus, 6, 21-22 Burning Cactus, 65