Xerophyte

Central Spines

4, forming a cross.

Description

Uebelmannia buiningiiSN|14311]]SN|14311]] is the most diminutive and also the most floriferous of the genus. It is a very pretty plant but tricky to cultivate and almost always grown grafted onto columnar cacti. It is very rare.

Flowers

Funnel-shaped , bright yellow, to 2.7 cm long and 2 cm in diameter.

Blooming Season

Early Summer to Late Summer.

Spines

Yellow-brown to reddish-brown, often black tipped, becoming white with age, some incurved.

Ribs

About 18, straight, 15 mm apart, divided into downward pointing tubercles about 5 mm apart.

Stem

Globular to short cylindrical, greenish to deep-chocolate brown with a rough, velvety surface covered with minute waxy scales, golfball sized occasionally up to 8 cm in diameter.

Radial Spines

2-4, shorter than the centrals, straight, to 5 mm long.

Fruits

Ovoid, yellow, to 4 mm in diameter.

Areoles

With sparse wool.