Synonym: Tacitus bellus.
Region: Mexico, Chihuahua.
Habitat: rocks; elevations of 1600 meters.
BotanyHerb; forming flat, densely leafy rosettes; diameter 3 to 8 cm; grow singly or in groups; 5 to 10 cm tall.
Leaves: 25 to 50; dark to grayish green; obovate to wedge-shaped, broadly blunt to rounded; 2 to 4 cm long, 1 to 3 cm wide, 4 to 5 mm thick; papillose; with an erect 2 mm long cusp.
Root: thickenedldiameters up to 4 mm.
Inflorescences: erect thyrsus; with 1 to 4 ascending, coiled branches with up to 3 flowers each; green shaft is 1.5 to 3.5 centimeters long
Flower: stalk 10 to 25 mm long; 5 merous; nearly scentless.
Calyx: sepals nearly identical, elliptic to oblong, pointed light green; somewhat recurved at the end of blooming; 6 to 11 mm long, 2 to 4 mm wide.
Corolla: 30 to 39 millimeters in diameter; cup-shaped tube; 3 to 4 mm long, 4 to 6 mm wide; petals acuminate, deep pink, elliptic-ovate, entire margins or finely toothed in the center, 11 to 18 mm long, 6 to 10 mm wide; 2 rounded outgrowths at the base close the corolla tube and enclose the epipetal stamens.
Androecium: stamens pink, 7 to 11 m long, fused to the corolla tube at the base for 3 to 4 mm; whitish nectary scales, 0.35 to 1 millimeter long, erect, truncate at the top.
Gynoecium: intense red carpel, 10 to 15 mm long 2.25 millimeters wide, nearly free at the base, keeled dorsally, 2-furrowed except at the base; style gradually narrowing, 2.5 to 4.5 millimeters long.
Chromosome number: 2n = 204.