Xerophyte

Central Spines

Usually missing, if present, single, and porrect.

Description

Echinocereus subinermisSN|16544]]SN|16544]] var. luteus (ayn

Flowers

On each rib appearing near top of plant and from second or third areole. Flower-buds acute, reddish, covered with long, brownish bristles; areoles on ovary and flower-tube bearing white wool and light-coloured acicular spines with dark tips; flowers pale yellow, delicately sweet-scented, 7 cm long, including the ovary. Outer perianth segments streaked with red. Inner perianth segments lemon-yellow, oblanceolate, acute. Filaments light yellow, stigmas deep green.

Spines

Small, the radials 6 to 8, unequal, 2 to 8 mm long, widely spreading, white with darker tips.

Ribs

Rather thin, hardly, if at all, undulate, rounded.

Stem

Short to elongated up to 30 cm tall, generally solitary, sometimes branching near base, bluish green, more or less purplish, 8 strongly or 9-ribbed.

Areoles

Small, 10 to 12 mm apart.