Echinocereus engelmannii

Echinocereus engelmannii (Engelmann's Hedgehog) is a species of Echinocereus. It's type locality is the mountains about San Felipe, southern California.

Background
Cespitose, forming large clumps; joints erect or ascending, cylindric, 1 to 3 dm. long, 5 to 6 cm in diameter; ribs 11 to 14, low, obtuse; areoles large, nearly circular; radial spines about 10, appressed, stiff about 1 cm. long; central spines 5 or 6, very stout, more or less curved and twisted, terete or somewhat flattened, sometimes 7 cm. long, yellowish to brown, more or less variegated ; flowers somewhat variable in size, 5 to 8 cm. long, and even broader when fully expanded, purple; perianth-segments oblong, 3 to 4 cm. long, acuminate; scales on ovary 3 to 5 mm. long, acuminate; areoles felted and bearing stout bristles fruit ovoid to oblong, spiny, about 3 cm. long; seeds black, nearly globular, or a little oblique, 1.5 mm. in diameter or less, tuberculate. Distributed in California, Nevada, Utah, Arizona, Sonora, and Lower California.