Opuntia pusilla

(Haworth) Haworth

Syn. Pl. Succ., 195. 1812.

Common names: Sandbur pricklypear
Endemic
Basionym: Cactus pusillus Haworth Misc. Nat., 188. 1803
Synonyms: Opuntia drummondii Graham Opuntia tracyi Britton
Treatment appears in FNA Volume 4. Treatment on page 130. Mentioned on page 126.

Shrubs, creeping, often forming mats, trailing, to 0.1 m. Stem segments easily detached, green, purplish red under stress, flattened, elliptic to linear, sometimes subcylindric (to subspheric), 2.5–5 (–8) × 1.2–2.5 cm, tuberculate, glabrous; areoles 2–5 per diagonal row across midstem segment, subcircular, 2–3 mm diam.; wool tan to gray. Spines (0–) 1–2 (–4) per areole, in distal 3/4 of stem segment areoles (to nearly spineless), porrect to spreading, redbrown, aging gray, stout, straight, terete, to 30 mm, strongly barbed. Glochids in crescent at adaxial edge of areole, pale-yellow, aging brown, to 3 mm, longest at areole apex. Flowers: inner tepals yellow throughout, 20–30 mm; filaments and anthers yellow; style and stigma lobes white. Fruits green becoming red-purple at late maturity, barrel-shaped, 18–30 × 12–20 mm, fleshy, glabrous, spineless; areoles 8–16. Seeds tan, subcircular, flattened, 4–6 mm diam.; girdle slightly protruding. 2n = 44.


Phenology: Flowering spring (Apr–May).
Habitat: Dune and pine scrub, primarily coastal, sandy openings, dunes, or rocky outcrops
Elevation: 0-100 m

Distribution

V4 239-distribution-map.gif

Ala., Fla., Ga., Miss., N.C., S.C., Tex.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Opuntia pusilla"
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 /> (0.3 cm3 mm <br />0.003 m <br />) +
deciduous +  and persistent +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
8 +  and 16 +
subcircular +
0.1 cm1 mm <br />0.001 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Donald J. Pinkava +
(Haworth) Haworth +
Cactus pusillus +
proliferating +
flattened +  and cylindric +
Sandbur pricklypear +
Ala. +, Fla. +, Ga. +, Miss. +, N.C. +, S.C. +  and Tex. +
0-100 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 +
green becoming red-purple +
straight +
indehiscent +
persistent +, long +  and deciduous +
18mm;30mm +
proliferating +
tuberculate +  and smooth +
barrel--shaped +
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 /> (0.3 cm3 mm <br />0.003 m <br />) +
foveolate +  and reticulate +
Dune and pine scrub, primarily coastal, sandy openings, dunes, or rocky outcrops +
oblong +  and spatulate +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 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 (Apr–May). +
ridgelike +  and nipple--shaped +
Syn. Pl. Succ., +
3;2;2;30 +
tuberlike +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
flattened;subcircular +
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
not sheathed +
7.5 cm75 mm <br />0.075 m <br /> (17 cm170 mm <br />0.17 m <br />) +
gray +  and redbrown +
straight +
deciduous +  and persistent +
porrect +  and spreading +
conspicuous +
with hairlike bristles +  and setose +
1 (?) +  and 2 (?) +
0 cm0 mm <br />0 m <br /> (3 cm30 mm <br />0.03 m <br />) +
hard +  and rigid +
decurrent +
winged +  and unsegmented +
tuberculate +  and smooth +
5 cm50 mm <br />0.05 m <br /> (8 cm80 mm <br />0.08 m <br />) +
purplish red +  and green +
2.5 cm25 mm <br />0.025 m <br /> (5 cm50 mm <br />0.05 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
segmented +
woody +  and succulent +
Opuntia drummondii +  and Opuntia tracyi +
adventitious +
tuberlike +
epipetric +  and epiphytic +
Opuntia pusilla +
species +
dull +  and glossy +
yellow +  and paler +
segmented +
terrestrial;epiphytic or epipetric +
tan +  and gray +