Xerophyte

Central Spines

4-6, porrect, several, stouter, 15-35 mm long, yellowish to dark brown.

Note

Latin 'smaragdinus', emeraldgreen; and Latin '-florus', -flowered; for the bright emerald-green tipped flowers.

Flowers

Small, 4 to 5 cm long, straight, tubular, a little constricted above the pericarpels, the tube and ovary red to pink; upper scales on flower-tube and outer perianth-segments with a long mucro. Outer perianth-segments yellow, inner perianth-segments small, bright green to emerald green, acute to mucronate not spreading. Stamens included. Style slightly exserted. Stigma-lobes 5 to 8, green.

Ribs

Low, 12 to 14.

Stem

Cylindrical, slender, arching to creeping, 2 to 2.5(-3) cm in diameter branching basally.

Radial Spines

10-14, acicular, to 10 mm long.

Fruits

Globose, to 1.5 cm in diameter.

Areoles

Pale brown-felted.