Cylindropuntia tunicata

(Lehmann) F. M. Knuth in C. Backeberg and F. M. Knuth

in C. Backeberg and F. M. Knuth, Kaktus-ABC, 126. 1935.

Common names: Sheathed cholla abrojo
Basionym: Cactus tunicatus Lehmann Nova Acta Phys. -Med. Acad. Caes. Leop.-Carol. Nat. Cur. 16: 319. 1832
Synonyms: Opuntia tunicata (Lehmann) Pfeiffer
Treatment appears in FNA Volume 4. Treatment on page 110. Mentioned on page 105.

Shrubs, densely branched, 0.3–0.6 m. Stem segments easily detached, whorled or subwhorled, pale green to green, 5–20 (–25) × 1.5–2.5 cm; tubercles very prominent, broad, 2–3 cm; areoles obdeltate, 4.5–8 × 2.5–5 mm; wool yellow-tan, aging gray. Spines 5–12 per areole, at most areoles, spreading, obscuring stems, yellow, acicular, larger ones 3–6 cm; sheaths persisting, yellow to tan, loosely fitting, 2–4 mm diam. Glochids in small adaxial tuft, pale-yellow, 0.5–1.2 mm. Flowers: inner tepals yellow to yellow-green, spatulate, 15–20 mm, apiculate; filaments yellowish; anthers yellow; style green to reddish; stigma lobes yellow-green to green. Fruits usually sterile, not proliferating, yellow to yellow-green, often tinged red, top-shaped to clavate, 25–50 × 8–15 mm, pulpy, tuberculate, spineless or sometimes weakly spined; tubercles subequal; umbilicus 5–7 mm deep; areoles 32–40. Seeds light tan, ± obovate, to 2.5 × 2 mm; girdle smooth. 2n = 22.


Phenology: Flowering late spring (May–Jun).
Habitat: Chihuahuan Desert, sandy to gravelly substrates, usually calcareous slopes or alluvium
Elevation: 1500 m [2000-2300 m]

Distribution

V4 208-distribution-map.gif

Tex., Mexico, South America (Chile), South America (Ecuador)

Discussion

Small plants of Cylindropuntia tunicata arising from fallen fruits or seeds consist of series of subspheric segments resembling club-chollas; those have been named Opuntia stapeliae de Candolle (N. L. Britton and J. N. Rose 1919–1923, vol. 1). Apparently in some areas, few of these make it to maturity and larger young plants are rarely seen.

Selected References

None.

Lower Taxa

None.
... more about "Cylindropuntia tunicata"
3 cm30 mm <br />0.03 m <br /> (6 cm60 mm <br />0.06 m <br />) +
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 +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
32 +  and 40 +
obdeltate +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Donald J. Pinkava +
(Lehmann) F. M. Knuth in C. Backeberg and F. M. Knuth +
Cactus tunicatus +
proliferating +
flattened +  and cylindric +
Sheathed cholla +  and abrojo +
Tex. +, Mexico +, South America (Chile) +  and South America (Ecuador) +
1500 m [2000-2300 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 />) +
sometimes weakly +  and spineless +
tinged red;yellow;yellow-green +
indehiscent +
persistent +, long +  and deciduous +
25mm;50mm +
not proliferating +
tuberculate +
top-shaped +  and clavate +
dry +  and fleshy +
0.8 cm8 mm <br />0.008 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
Chihuahuan Desert, sandy to gravelly substrates, usually calcareous slopes or alluvium +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 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 late spring (May–Jun). +
ridgelike +  and nipple--shaped +
in C. Backeberg and F. M. Knuth, Kaktus-ABC, +
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 cm0 mm <br />0 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
obovate +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
persisting +
fitting +
deciduous +  and persistent +
conspicuous +
5 (?) +  and 12 (?) +
flattened +
hard +  and rigid +
decurrent +
winged +  and unsegmented +
tuberculate +  and smooth +
subwhorled +  and whorled +
20 cm200 mm <br />0.2 m <br /> (25 cm250 mm <br />0.25 m <br />) +
pale green +  and green +
5 cm50 mm <br />0.05 m <br /> (20 cm200 mm <br />0.2 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
segmented +
woody +  and succulent +
yellow-green +  and green +
green +  and reddish +
Opuntia tunicata +
adventitious +
tuberlike +
epipetric +  and epiphytic +
Cylindropuntia tunicata +
Cylindropuntia +
species +
dull +  and glossy +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
terrestrial;epiphytic or epipetric +
gray +  and yellow-tan +