Echinopsis rhodotricha
Monatsschr. Kakteenk. 10: 147. 1900
Family
Cactaceae
Genus
Species
Echinopsis rhodotricha
Author
K.Schum.
Chinese genus
仙人球属
Chinese name
-
DescriptionEdit description
Central Spines
One or wanting, 1 to 3.5 cm long, (usually shorter than the radials), more reddish brown somewhat bent upward.
Description
Echinopsis rhodotrichaSN|21017]]SN|21017]] is a globular or columnar, cespitose cactus with 8 to 10 erect or ascending stems to 80 cm high with 8-13 ribs and 4-7 radial spines up to 2.5 cm long. Echinopsis rhodotrichaSN|21017]]SN|21017]] blooms with slender white flowers, at the base of which there are dark scales with white, black and red, woolly hairs. Two subspecies are recognized, the nominate form and subsp. chacoana (Schütz) P.J.Braun & Esteves.
Flowers
White 15-19 cm, 9 cm in diameter, long funnel-shaped, tubular produced from the tubular areoles. Ovary with many blackish scales and reddish brown wool. Tube light brown, woth with green scales and a mix of white, blackish brown and reddish wool. Outer perianth-segments lanceolate, white with a brown median strip. Inner perianth-segments white, subequal, oblong, acute. Throat light green. Stamens numerous, primary and secondary in one continuous ring with no separate throat-circle. Filaments white. Anthers cream. Stigma-lobes linear, 11, green.
Ribs
8 to 13 (or more), rather low (.5-2 cm tall), a little sinuate rounded, with barely pronounced tubercles, separated by deep vertical grooves.
Stem
Branches erect or ascending, dull greyish green or light green, elongated, cylyndrical, apex slightly depressed, woolly, with some young spines, 30 to 80 cm high, 9-12 cm in diameter, or sometimes simple in cultivation.
Radial Spines
4 to 7(-8), strong, erect, to 2 cm long, widely spreading, a little curved, yellowish with brown to blackish tips, later turning pale.
Fruits
Ovoid, 4.5 × 2.5 cm, lined with reddish-brown wool.
Areoles
15 to 30 mm apart, lined with wool yellowish passing greyish white.