Opuntia chlorotica

Engelmann & J. M. Bigelow

Proc. Amer. Acad. Arts 3: 291. 1856.

Common names: Pancake pricklypear
Illustrated
Treatment appears in FNA Volume 4. Treatment on page 133. Mentioned on page 126, 128.

Trees or shrubs, erect, 2–2.5 m, with spiny, well-defined trunk to 30 cm diam. Stem segments not disarticulating, blue-green, flattened, obovate to circular, 13–21 × 11.5–19 cm, nearly smooth, glabrous; areoles 7–10 per diagonal row across midstem segment, subcircular to elliptic, with basal ridge, 3–6 × 2.5–4 mm; wool tan, aging grayish white. Spines absent or usually in distal areoles to evenly distributed over entire stem segment, yellow, aging redbrown to blackish, straight or weakly curved, ± acicular, deflexed, or some erect in marginal areoles; larger spines 0–7 per areole, terete or basally flattened, 25–45 mm, usually accompanied by few straight to wavy bristle-spines. Glochids crowded in narrow crescent along adaxial margins, longer toward base of areole margins, subapical tuft absent or poorly developed, yellow, aging reddish-brown, to 14 mm. Flowers: inner tepals yellow (sometimes with reddish blush near base), abaxially reddish streaked along midveins, broadly spatulate-apiculate, 18–30 mm; filaments white to yellow; anthers; style and stigma lobes white, yellowish, or pale green. Fruits red, barrel-shaped, 30–60 × 18–40 mm, fleshy (often mummifying), glabrous, spineless; umbilicus 6–9 mm deep; areoles 40–68. Seeds yellowish, 3.5–4 × 3–3.5 mm, 1.5–1.8 mm thick, reniform to subcircular, flattened, often warped; girdle protruding 0.1–0.5 mm. 2n = 22.


Phenology: Flowering spring–summer (Apr–Jul).
Habitat: Desert grasslands, woodlands, chaparral, desert flats, rocky ledges, hills, canyons
Elevation: 600-2400 m

Distribution

V4 249-distribution-map.gif

Ariz., Calif., Nev., N.Mex., Utah, Mexico (Baja California), Mexico (Baja California Sur), Mexico (Sonora)

Discussion

Opuntia chlorotica hybridizes with O. santa-rita in southeastern Arizona and with the hexaploid O. phaeacantha forming the tetraploid O. ×curvispina in areas of Arizona, California, and Nevada.

Selected References

None.

Lower Taxa

None.
... more about "Opuntia chlorotica"
cushionlike +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
deciduous +  and persistent +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
40 +  and 68 +
subcircular +  and elliptic +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Donald J. Pinkava +
Engelmann & J. M. Bigelow +
proliferating +
flattened +  and cylindric +
Pancake pricklypear +
Ariz. +, Calif. +, Nev. +, N.Mex. +, Utah +, Mexico (Baja California) +, Mexico (Baja California Sur) +  and Mexico (Sonora) +
600-2400 m +
white +  and yellow +
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 />) +
burlike +  and spiny +
straight +
indehiscent +
persistent +, long +  and deciduous +
30mm;60mm +
proliferating +
tuberculate +  and smooth +
barrel--shaped +
1.8 cm18 mm <br />0.018 m <br /> (4 cm40 mm <br />0.04 m <br />) +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
foveolate +  and reticulate +
Desert grasslands, woodlands, chaparral, desert flats, rocky ledges, hills, canyons +
oblong +  and spatulate +
1.8 cm18 mm <br />0.018 m <br /> (3 cm30 mm <br />0.03 m <br />) +
flattened +  and terete +
2.5 cm25 mm <br />0.025 m <br /> (4.5 cm45 mm <br />0.045 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 +
open +  and simple +
sometimes covered by outgrowths of proximal portion of style base or of flower tube wall +  and open +
persistent +  and deciduous +
Flowering spring–summer (Apr–Jul). +
ridgelike +  and nipple--shaped +
Proc. Amer. Acad. Arts +
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 />) +
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
warped;flattened;reniform;subcircular +
1.5mm +  and 1.8mm +
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Illustrated +
not sheathed +
7.5 cm75 mm <br />0.075 m <br /> (17 cm170 mm <br />0.17 m <br />) +
redbrown to blackish +  and yellow +
curved +  and straight +
deciduous +  and persistent +
erect +  and deflexed +
conspicuous +
with hairlike bristles +  and setose +
acicular +
0 cm0 mm <br />0 m <br /> (7.5 cm75 mm <br />0.075 m <br />) +
hard +  and rigid +
decurrent +
winged +  and unsegmented +
tuberculate +  and smooth +
not disarticulating +
60 cm600 mm <br />0.6 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
13 cm130 mm <br />0.13 m <br /> (21 cm210 mm <br />0.21 m <br />) +
nearly smooth +  and tuberculate +
11.5 cm115 mm <br />0.115 m <br /> (19 cm190 mm <br />0.19 m <br />) +
segmented +
woody +  and succulent +
pale green +, yellowish +  and white +
pale green +, yellowish +  and white +
reddish-brown +  and yellow +
0 cm0 mm <br />0 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
adventitious +
tuberlike +
epipetric +  and epiphytic +
Opuntia chlorotica +
species +
dull +  and glossy +
yellow +  and paler +
well-defined +
segmented +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
shrub +  and tree +
terrestrial;epiphytic or epipetric +
grayish white +  and tan +