Opuntia humifusa var. ammophila

(Small) L. D. Benson

Cact. Succ. J. (Los Angeles) 48: 39. 1976.

Endemic
Basionym: Opuntia ammophila Small J. New York Bot. Gard. 20: 29, plate 224. 1919
Synonyms: Opuntia compressa var. ammophila (Small) L. D. Benson
Treatment appears in FNA Volume 4. Treatment on page 131.

Shrubs or small trees, erect, to 2 m, often with short trunk, usually oval in cross-section. Stem segments firm.


Phenology: Flowering spring–summer (Feb–Aug).
Habitat: Sand dunes, scrub woodland flats
Elevation: 0-60 m

Discussion

Opuntia humifusa var. ammophila is poorly known and needs additional ecologic, taxonomic, and molecular study. The distribution given follows L. D. Benson (1982).

Selected References

None.

Lower Taxa

None.

"thickish" is not a number.

pale-yellow +  and cream +
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 />) +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
deciduous +  and persistent +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
10 +  and 18 +
oval +  and circular +
0.1 cm1 mm <br />0.001 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Donald J. Pinkava +
(Small) L. D. Benson +
Opuntia ammophila +
proliferating +
flattened +  and cylindric +
0-60 m +
yellow +  and orange +
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 />) +
spineless +  and stipitate +
burlike +  and spiny +
apricot;brownish red +
straight +
indehiscent +
persistent +, long +  and deciduous +
30mm;50mm +
proliferating +
tuberculate +  and smooth +
tapering +  and elongate +
1.2 cm12 mm <br />0.012 m <br /> (2 cm20 mm <br />0.02 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 /> (0.4 cm4 mm <br />0.004 m <br />) +
foveolate +  and reticulate +
Sand dunes, scrub woodland flats +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
oblong +  and spatulate +
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 (Feb–Aug). +
ridgelike +  and nipple--shaped +
Cact. Succ. J. (Los Angeles) +
reddish +  and green +
sweet +  and sour +
3;2;2;30 +
tuberlike +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
warped;generally circular;reniform flattened +
0 cm0 mm <br />0 m <br /> (50 cm500 mm <br />0.5 m <br />) +
not sheathed +
7.5 cm75 mm <br />0.075 m <br /> (17 cm170 mm <br />0.17 m <br />) +
whitish +  and brownish +
straight +
deciduous +  and persistent +
deflexed +  and spreading +
conspicuous +
with hairlike bristles +  and setose +
1 (?) +  and 2 (?) +
2.5 cm25 mm <br />0.025 m <br /> (6 cm60 mm <br />0.06 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 />) +
green +, shiny +, bright +  and dark +
5 cm50 mm <br />0.05 m <br /> (17.5 cm175 mm <br />0.175 m <br />) +
tuberculate +  and wrinkling +
4 cm40 mm <br />0.04 m <br /> (12 cm120 mm <br />0.12 m <br />) +
segmented +
woody +  and succulent +
Opuntia compressa var. ammophila +
adventitious +
tuberlike +
epipetric +  and epiphytic +
Opuntia humifusa var. ammophila +
Opuntia humifusa +
variety +
dull +  and glossy +
yellow +  and paler +
segmented +
crescent +
tree +  and shrub +
terrestrial;epiphytic or epipetric +
2 (?) +  and 1 (?) +
tan +  and brown +