Cylindropuntia acanthocarpa var. major

(Engelmann) Pinkava

J. Arizona-Nevada Acad. Sci. 32: 42. 1999.

Illustrated
Basionyms: Opuntia echinocarpa var. major Engelmann Proc. Amer. Acad. Arts 3: 305. 1856
Synonyms: Cylindropuntia acanthocarpa var. ramosa (Peebles) Backeberg Opuntia acanthocarpa var. major (Engelmann & J. M. Bigelow) L. D. Benson Opuntia acanthocarpa var. ramosa Peebles Opuntia echinocarpa var. robustior J. M. Coulter
Treatment appears in FNA Volume 4. Mentioned on page 106, 109, 112, 114.

Shrubs, sprawling, with numerous branches, usually at obtuse angles. Stem segments green to dark green, 8–20 (–31) cm; tubercles salient, moderately broad, 1.5–2.5 cm. Spines 14–18 (–23) per areole, yellow to deep redbrown, aging gray, not baggy sheathed; major abaxial spines usually deflexed, spreading. Flowers: inner tepals yellow, bronze, or brick-red. Fruits spiny; areoles 14–22 (–26). 2n = 22.


Phenology: Flowering spring (Mar–Jun).
Habitat: Sonoran Desert, sandy flats, washes, rocky slopes
Elevation: 300-900 m

Discussion

Cylindropuntia acanthocarpa var. major hybridizes with C. bigelovii (= C. campii M. A. Baker & Pinkava).

Selected References

None.

Lower Taxa

None.

subterete +  and flattened +
ascending-divergent +
gray +, tan +  and deep redbrown +
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 +
0.4 cm4 mm <br />0.004 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
14 +  and 22 +
elliptic +  and subcircular +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Donald J. Pinkava +
(Engelmann) Pinkava +
Opuntia echinocarpa var. major +
3 cm30 mm <br />0.03 m <br /> (3.8 cm38 mm <br />0.038 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (3 cm30 mm <br />0.03 m <br />) +
proliferating +
flattened +  and cylindric +
Ariz. +  and Mexico (Sonora) +
300-900 m +
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 />) +
spiny +  and spineless +
indehiscent +
persistent +, long +  and deciduous +
15mm;35mm +
tuberculate +
obconic +  and ellipsoid +
dry +  and fleshy +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Sonoran Desert, sandy flats, washes, rocky slopes +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 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 (Mar–Jun). +
ridgelike +  and nipple--shaped +
J. Arizona-Nevada Acad. Sci. +
3;2;2;30 +
tuberlike +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
warped;squarish;angular +
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
tight-fitting +
Illustrated +
not sheathed +
gray +, yellow +  and deep redbrown +
deciduous +  and persistent +
conspicuous +
14 (?) +  and 18 (?) +
flattened +
hard +  and rigid +
decurrent +
winged +  and unsegmented +
tuberculate +  and smooth +
30 cm300 mm <br />0.3 m <br /> (50 cm500 mm <br />0.5 m <br />) +
20 cm200 mm <br />0.2 m <br /> (31 cm310 mm <br />0.31 m <br />) +
2.5 cm25 mm <br />0.025 m <br /> (3 cm30 mm <br />0.03 m <br />) +
green +  and dark green +
10 cm100 mm <br />0.1 m <br /> (30 cm300 mm <br />0.3 m <br />) +
8 cm80 mm <br />0.08 m <br /> (20 cm200 mm <br />0.2 m <br />) +
2 cm20 mm <br />0.02 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
segmented +
woody +  and succulent +
white +  and light green +
white +  and light green +
Cylindropuntia acanthocarpa var. ramosa +, Opuntia acanthocarpa var. major +, Opuntia acanthocarpa var. ramosa +  and Opuntia echinocarpa var. robustior +
adventitious +
tuberlike +
epipetric +  and epiphytic +
Cylindropuntia acanthocarpa var. major +
Cylindropuntia acanthocarpa +
variety +
dull +  and glossy +
yellow +  and golden +
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
terrestrial;epiphytic or epipetric +
gray-black +, yellowish +  and tan +