It is in Northern Mexico that we glimpse the Spiny Hedgehog Cactus, or, as the scientist names him for his many spines, _Echinocereus polyacanthus_, a fierce thorny little fellow. He has fifteen sharp stout spines, somewhat flask-shaped at the bases, and spreading, at first pale yellow, then becoming pinkish gray or grayish purple with the tips mostly darker, deep yellow to blackish shades. His flame-red blossoms, sometimes tinged with orange, are called single though they seem to be clustered when abundant—large striking flowers, several blooming at one time in early and late spring, and remaining open for days, not closing up at night. Though not specially abundant, _polyacanthus_ is one of the commoner varieties of the low mountains and foothills on the desert. Salmon Flowered Hedgehog Cactus (_Echinocereus Leeanus_) _Northern Mexico_ A lustrous mass of flame-colored blossoms attracts our attention next, as we speed along the highway intent on making camp for the night across the United States line from Mexico. It is the Salmon Flowered Hedgehog Cactus, whose large, wide-spreading petals (two or three inches across the flower), are of a brilliant salmon hue, showy and attractive, and remain open for several days at a time in the spring, not even closing at night. The blossoms are borne near the tips of the stems, and as many as ten or twelve are in bloom at a time. Though not native to the United States, the Salmon Flowered Hedgehog is occasionally found in cactus gardens in Arizona and California, and is well known to cactus connoisseurs and gardens in Europe. The species was named _Leeanus_ in honor of James Lee of England, who presented the type specimen to the Royal Botanic Gardens at Kew about 1842. Rose’s Hedgehog Cactus (_Echinocereus Rosei_) _Southeastern Arizona, Texas, New Mexico, and Northern Mexico_