Xerophyte

Habit

Plants mostly solitary, sometimes branching to form small clumps.

Central Spines

Solitary, erect.

Description

Echinopsis silvestrii is known for having gorgeous, white flowers at the ends of long tubes often as large or larger than the whole plant. The flower are scentless. It should not be confused with Echinopsis chamaecereusSN|8696]]SN|8692]], formerly known as Chamaecereus silvestriiSN|8694]]SN|8694]].

Note

Echinopsis silvestriiSN|8692]]SN|8696]] is poorly known and sometime synonymized with Echinopsis albispinosa K. Schumann 1903.

Flowers

White, not fragrant, to 20 cm long, inner perianth-segments obtuse, white; style white; stigma-lobes 9, white.

Ribs

12-14.

Stem

Globose to short cylindrical, 5-10 cm high, 4-8 cm in diameter.

Radial Spines

5-9, flattened against the stem surface.

Areoles

Round, whitish.Spines. Rather stout and short; greyish.