Opuntia basilaris var. longiareolata

(Clover & Jotter) L. D. Benson

Cacti Arizona ed. 2, 43. 1950.

Common names: Grand Canyon beavertail pricklypear
Endemic
Basionym: Opuntia longiareolata Clover & Jotter Bull. Torrey Bot. Club 68: 418, fig. 6. 1941
Synonyms: Opuntia heilii S. L. Welsh & Neese
Treatment appears in FNA Volume 4. Treatment on page 145. Mentioned on page 144.

Stem segments often decumbent, flattened apically, spatulate, (5–) 9–18 × 4–11 cm; areoles 6–8 (–9) per diagonal row across midstem segment, elongate to usually circular. Spines absent. Fruits spineless. 2n = 22.


Phenology: Flowering spring (Mar–Apr).
Habitat: Mojave and Great Basin deserts, clay hills, flats, canyon bottoms to bluffs
Elevation: 600-1600 m

Discussion

The elongate areoles that the specific epithet implies are not at all characteristic for Opuntia basilaris var. longiareolata and are sometimes found on plants of other varieties.

Selected References

None.

Lower Taxa

None.
cushionlike +
circular +  and elliptic +
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 /> (0.5 cm5 mm <br />0.005 m <br />) +
6 +  and 8 +
elongate +  and usually circular +
0.5 cm5 mm <br />0.005 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
3 cm30 mm <br />0.03 m <br /> (?) +
Donald J. Pinkava +
(Clover & Jotter) L. D. Benson +
Opuntia longiareolata +
proliferating +
flattened +  and cylindric +
Grand Canyon beavertail pricklypear +
Ariz. +  and Utah. +
600-1600 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 />) +
burlike +  and spiny +
straight +
indehiscent +
persistent +, long +  and deciduous +
20mm;40mm +
tuberculate +  and smooth +
clavate +  and cylindric ovoid or obovoid +
fleshy +  and juicy or dry +
1.5 cm15 mm <br />0.015 m <br /> (2.3 cm23 mm <br />0.023 m <br />) +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
0 cm0 mm <br />0 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
foveolate +  and reticulate +
Mojave and Great Basin deserts, clay hills, flats, canyon bottoms to bluffs +
oblong +  and spatulate +
2.5 cm25 mm <br />0.025 m <br /> (4 cm40 mm <br />0.04 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 (Mar–Apr). +
ridgelike +  and nipple--shaped +
Cacti Arizona ed. +
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 />) +
0.65 cm6.5 mm <br />0.0065 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
subspheric +
0.65 cm6.5 mm <br />0.0065 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
7 cm70 mm <br />0.07 m <br /> (40 cm400 mm <br />0.4 m <br />) +
bearing 1-3 depressions +  and smooth +
not sheathed +
7.5 cm75 mm <br />0.075 m <br /> (17 cm170 mm <br />0.17 m <br />) +
dark-brown +  and black +
deciduous +  and persistent +
conspicuous +
with hairlike bristles +  and setose +
0 (?) +  and 15 (?) +
terete +  and angular-flattened +
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 +
5 cm50 mm <br />0.05 m <br /> (9 cm90 mm <br />0.09 m <br />) +
13.5 cm135 mm <br />0.135 m <br /> (16 cm160 mm <br />0.16 m <br />) +
tinged maroon-purple +, blue +  and yellow-green +
9 cm90 mm <br />0.09 m <br /> (18 cm180 mm <br />0.18 m <br />) +
4 cm40 mm <br />0.04 m <br /> (11 cm110 mm <br />0.11 m <br />) +
segmented +
woody +  and succulent +
white +  and cream +
white +  and pink +
Opuntia heilii +
adventitious +
tuberlike +
epipetric +  and epiphytic +
Opuntia basilaris var. longiareolata +
Opuntia basilaris +
variety +
dull +  and glossy +
yellow +  and paler +
segmented +
0.5 cm5 mm <br />0.005 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
terrestrial;epiphytic or epipetric +
erect +  and trailing +
1 (?) +  and 2 (?) +
gray +, white +  and tan +