Cylindropuntia imbricata var. imbricata

Illustrated
Synonyms: Cactus cylindricus James Opuntia arborescens Engelmann Opuntia vexans Griffiths
Treatment appears in FNA Volume 4. Treatment on page 113. Mentioned on page 107, 110, 112.
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Trees, with short trunks, openly branched, 3 (–5) m. Stem segments 12–40 cm; tubercles widely spaced. Spines and sheaths usually tan to dirty white or ± yello, sometimes absent. 2n = 22.


Phenology: Flowering spring–summer (May–Aug).
Habitat: Deserts, grasslands, pinyon-juniper woodlands, hills, plains
Elevation: (800-)1100-1800(-2200) m

Distribution

V4 213-distribution-map.gif

Ariz., Colo., Kans., N.Mex., Okla., Tex., Mexico (Chihuahua), Mexico (Coahuila), Mexico (Durango), Mexico (Nuevo León), Mexico (San Luis Potosí), Mexico (Tamaulipas), Mexico (Zacatecas)

Discussion

A dominant cholla of the Chihuahuan Desert, Cylindropuntia imbricata var. imbricata is wide- ranging and variable in several characters; it is generally shorter and more spiny northward (there often referred to as Opuntia arborescens). The species appears to be spreading northeastward in Oklahoma and Kansas as a result of cattle ranching activities. In Arizona, New Mexico, and Mexico, var. imbricata intergrades with C. spinosior. Northward, var. imbricata hybridizes with C. whipplei (= C. ×viridiflora).

Selected References

None.

Lower Taxa

None.
cushionlike +
gray +  and tan +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
deciduous +  and persistent +
18 +  and 30 +
obdeltate +  and rhombic +
Donald J. Pinkava +
(Haworth) F. M. Knuth in C. Backeberg and F. M. Knuth +
Cereus imbricatush +
proliferating +
flattened +  and cylindric +
Ariz. +, Colo. +, Kans. +, N.Mex. +, Okla. +, Tex. +, Mexico (Chihuahua) +, Mexico (Coahuila) +, Mexico (Durango) +, Mexico (Nuevo León) +, Mexico (San Luis Potosí) +, Mexico (Tamaulipas) +  and Mexico (Zacatecas) +
(800-)1100-1800(-2200) m +
pink +  and magenta +
salverform +, cup-shaped +  and rotate +
15 cm150 mm <br />0.15 m <br /> (30 cm300 mm <br />0.3 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (15 cm150 mm <br />0.15 m <br />) +
indehiscent +
persistent +, long +  and deciduous +
2.4 cm24 mm <br />0.024 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
not proliferating +
tuberculate +
obovoid +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
with low marginal ridge +  and smooth +
not protruding +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Deserts, grasslands, pinyon-juniper woodlands, hills, plains +
1.5 cm15 mm <br />0.015 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
deciduous +
flattened +  and conic +
0 cm0 mm <br />0 m <br /> (3 cm30 mm <br />0.03 m <br />) +
succulent +
tuberculate +
fluted;spheric;depressed-spheric or club-shaped +
tinged color +
sometimes covered by outgrowths of proximal portion of style base or of flower tube wall +  and open +
persistent +  and deciduous +
Flowering spring–summer (May–Aug). +
ridgelike +  and nipple--shaped +
in C. Backeberg and F. M. Knuth, Kaktus-ABC, +
3;2;2;30 +
tuberlike +
yellow-tan +
2.5mm;4mm +
warped;subcircular;angled +
0.19 cm1.9 mm <br />0.0019 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
yellow-tipped +
smooth;slightly lumpy +
Illustrated +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
more or less +, usually tan +  and dirty white +
curved +  and straight +
deciduous +  and persistent +
not spreading +
conspicuous +
8 (?) +  and 15 (?) +
flattened +  and terete +
0.8 cm8 mm <br />0.008 m <br /> (3 cm30 mm <br />0.03 m <br />) +
hard +  and rigid +
decurrent +
winged +  and unsegmented +
tuberculate +  and smooth +
subwhorled +  and whorled +
40 cm400 mm <br />0.4 m <br /> (50 cm500 mm <br />0.5 m <br />) +
10 cm100 mm <br />0.1 m <br /> (40 cm400 mm <br />0.4 m <br />) +
12 cm120 mm <br />0.12 m <br /> (40 cm400 mm <br />0.4 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (4 cm40 mm <br />0.04 m <br />) +
segmented +
woody +  and succulent +
cream +  and green +
light green basally or pink +  and red-magenta +
Cactus cylindricus +, Opuntia arborescens +  and Opuntia vexans +
adventitious +
tuberlike +
epipetric +  and epiphytic +
Cylindropuntia imbricata var. imbricata +
Cylindropuntia imbricata +
variety +
dull +  and glossy +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
300 cm3,000 mm <br />3 m <br /> (500 cm5,000 mm <br />5 m <br />) +
terrestrial;epiphytic or epipetric +
gray +  and black +