Fragrant pink flowers with clear throat 7-8 cm long.
It blooms from April to June, and occasionally later in summer.
Description: Unbranched (rarely few branched).
Stems: Erect, short cylindric, to 20(-40) × 4-6 cm;
Ribs: 13-19, crests slightly undulate, sometimes tuberculate;
Areoles: Round , closely set 4-8 mm apart.
Spines: 13-17 per areole, stiff and straight, white, pink, brown
or gray, becoming gray with dark tips; radial spines 12-17 per areole,
appressed to spreading, 2-12 mm; central spines (0-)1-4 per areole,
projecting, 1-4 mm.
Flowers: 5-8 × 7-10 cm; inner tepals purplish pink, darker
proximal portion and midstripes, tips relatively thin and delicate;
anthers dark yellow. Filaments and throat greenish.
Blooming times: Spring to summer
Fruits: Dark green, brownish tinged, 15-23 mm, pulp white,
fruiting 2 months after flowering.
Notes: Misidentifications of E. scopulorum (=
pseudopectinatus) were the basis for Arizona reports of
E. pectinatus and
E. dasyacanthus, which belong to an unrelated species group from
the Chihuahuan Desert. Formerly, E. pseudopectinatus was considered
E. bristolii W. T. Marshall, a closely related endemic species
of Sonora, Mexico.
Buds are borne at the sides
or near the stem top
scopulorum is relatively easy to grow and very attractive. Rot
easily it is sensitive to overwatering (rot prone),
so perfect soil drainage is a must. It prefer
a neutral to slightly acidic compost with plenty of extra grit.
Best if watered with rain water and given an occasional tonic of
sequestrated iron. In the summer they need an
airy location in bright sun; well watered when it's hot.
To achieve the best spine colours give these
plants lots of sun. In the winter light, cool,
and absolutely dry conditions. Very cold
resistant above approx -12C or less for short
periods of time. In mild climate they
grow well when planted freely outside in well-drained soil.
Photo of conspecific taxa, varieties, forms and
cultivars of E.
has lots of synonyms whit several controversial varieties and subspecies):
Scientific name: Echinocereus scopulorum Britton et
Origin: Mexico (coastal Sonora, Tiburon Island, coastal
Habitat: Chihuahuan Desert, desert
scrub, mostly semidesert grasslands, rocky slopes, mostly igneous
Conservation status: Listed in
CITES appendix 2.
Common Name: Sonoran Rainbow Cactus
- Echinocereus pseudopectinatus (N.
P. Taylor) N. P. Taylor
Pubblished in: Bradleya. 7: 74. 1989.
- Echinocereus bristolii var.
pseudopectinatus N. P. Taylor
Pubblished in: Gen. Echinocereus, 120, figs. A-C (p.
- Echinocereus scopulorum subsp.
pseudopectinatus (N. P. Taylor) W. Blum & Mich. Lange
Pubblished in: Blum et al. 1998:342.
- Echinocereus pectinatus var. scopulorum
(Britton & Rose) Marshall 1955:61
- Echinocereus pectinatus
- Echinocereus cochisei Hester
The flowers of E. scopulorum are truly beautiful.
Spines are stiff and straight, white, pink, brown or grey
becoming grey with dark tips.