Opuntia humifusa var. humifusa

IllustratedEndemic
Synonyms: Opuntia austrina Small Opuntia calcicola Wherry Opuntia compressa var. austrina (Small) L. D. Benson Opuntia humifusa var. ammophila (Small) Dress Opuntia humifusa var. austrina Opuntia impedata Opuntia rafinesquei
Treatment appears in FNA Volume 4. Treatment on page 131. Mentioned on page 122.

Shrubs forming clumps, often prostrate, usually only 1 or 2 stem segments tall, to 0.5 m. Stem segments fleshy, flabby, or firm, cross-wrinkled under stress. 2n = 22, 44.


Phenology: Flowering spring–summer (Feb–Aug).
Habitat: Sandy habitats, openings on dry, sometimes wooded hillsides
Elevation: 0-1000 m

Distribution

V4 243-distribution-map.gif

Ont., Ala., Ark., Conn., Del., Fla., Ga., Ill., Ind., Iowa, Kans., Ky., La., Md., Mass., Mich., Minn., Miss., Mo., Nebr., N.J., N.Y., N.C., Ohio, Okla., Pa., R.I., S.C., S.Dak., Tenn., Tex., Va., W.Va., Wis.

Discussion

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 +
(Rafinesque) Rafinesque +
Cactus humifusus +
proliferating +
flattened +  and cylindric +
Ont. +, Ala. +, Ark. +, Conn. +, Del. +, Fla. +, Ga. +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, La. +, Md. +, Mass. +, Mich. +, Minn. +, Miss. +, Mo. +, Nebr. +, N.J. +, N.Y. +, N.C. +, Ohio +, Okla. +, Pa. +, R.I. +, S.C. +, S.Dak. +, Tenn. +, Tex. +, Va. +, W.Va. +  and Wis. +
0-1000 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 +
Sandy habitats, openings on dry, sometimes wooded hillsides +
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 +
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 />) +
Illustrated +  and Endemic +
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 />) +
cross-wrinkled +
firm +  and fleshy +
4 cm40 mm <br />0.04 m <br /> (12 cm120 mm <br />0.12 m <br />) +
segmented +
woody +  and succulent +
Opuntia austrina +, Opuntia calcicola +, Opuntia compressa var. austrina +, Opuntia humifusa var. ammophila +, Opuntia humifusa var. austrina +, Opuntia impedata +  and Opuntia rafinesquei +
adventitious +
tuberlike +
epipetric +  and epiphytic +
Opuntia humifusa var. humifusa +
Opuntia humifusa +
variety +
dull +  and glossy +
yellow +  and paler +
segmented +
crescent +
terrestrial;epiphytic or epipetric +
erect +  and trailing +
2 (?) +  and 1 (?) +
tan +  and brown +