Xerophyte

Habit

It grow solitary or more commonly in loosely packed clumps, usually with about 10 heads per cluster, but sometime with as many as 50 heads in a single clump.

Central Spines

Stout, straight, tan to golden yellow, tips often reddish brown, about 10-20(-25) mm long, inner central spines 0 to 4 (usually 1) per areole, outer central spines 8 to 14 per areole, subequal.

Seeds

About 1 mm long, kidney-shaped with hilum lateral, pitted, brown.

Description

Escobaria organensisSN|25139]]SN|10363]] is a small clustering cactus species, with spines obscuring the stem and giving the plant a yellow appearance. Blooms are pink.

Phenology

Flowering occurs in spring (May to June in habitat). Fruit are persistent into autumn.

Tubercles

7-10 mm long with upper surface bearing a groove in adult specimens.

Flowers

Pink (usually), pale yellowish or nearly white, often with midribs darker, not opening widely, about up to 2,5 cm long (usually smaller 1,4-1,5 mm), outer perianth parts fringed. Stigmas white to pink.

Spines

About 20-60 per areole, majority slender and bristle-like to about 10 mm long and spreading.

Stem

Individual stems globular to cylindric,soft, 2-4(-7) cm in diameter, to 12(-15) cm tall.

Radial Spines

37 to 49 per areole, white, fine, stiff, straight, spines are usually not completely obscuring underlying tubercles.

Fruits

Cylindric, yellowish green to somewhat reddish, up to 6-14(-20) mm long, perianth parts persistent.