Opuntia aciculata

Griffiths

Proc. Biol. Soc. Wash. 29: 10. 1916.

Common names: Cowboy’s red whiskers
Endemic
Synonyms: Opuntia lindheimeri var. aciculata (Griffiths) Bravo
Treatment appears in FNA Volume 4. Mentioned on page 134.

Shrubs, spreading, to 1.2 m. Stem segments not disarticulating, deep green, flattened, subcircular to obovate, 13–20 × 8–10 cm, nearly smooth, glabrous; areoles 5–7 per diagonal row across midstem segment, subcircular, 4–5 mm diam.; wool brown, long. Spines commonly absent or evenly distributed with 1–3 (–8) per areole, deflexed, yellow or brown, tipped yellow or mottled brown, straight, acicular, the longest to 50 mm. Glochids widely and evenly spaced, conspicuous, radiating like star or pincushion, pale to deep redbrown, sometimes tipped yellow, 3–8 mm. Flowers: inner tepals yellow, orange, or deep red (rarely magenta), to 30 mm; anthers yellow; filaments and style usually cream to pink; stigma lobes dark green. Fruits purplish red, ovoid to pyriform, 30–38 × 17–25 mm, juicy, glabrous, spineless; areoles 24–26. Seeds subcircular, 3–3.5 mm diam.; girdle size unknown. 2n = 44.


Phenology: Flowering spring (Apr–May).
Habitat: Rangeland scrub, gravelly hills
Elevation: 100-200 m

Discussion

Opuntia aciculata is found in the flora area only along the Rio Grande in Webb County, Texas, perhaps introduced. It was reported from Nuevo León, Mexico, according to D. Weniger (1970). The spineless or nearly spineless form with red to deep red tepals is widely cultivated.

Selected References

None.

Lower Taxa

None.
... more about "Opuntia aciculata"
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 />) +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
deciduous +  and persistent +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
24 +  and 26 +
subcircular +
0.1 cm1 mm <br />0.001 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Donald J. Pinkava +
Griffiths +
proliferating +
flattened +  and cylindric +
Cowboy’s red whiskers +
100-200 m +
usually cream +  and pink +
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 +
purplish red +
straight +
indehiscent +
persistent +, long +  and deciduous +
30mm;38mm +
proliferating +
tuberculate +  and smooth +
ovoid +  and pyriform +
1.7 cm17 mm <br />0.017 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
not protruding +  and protruding +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
pincushion +, star +, like +  and radiating +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
foveolate +  and reticulate +
Rangeland scrub, gravelly hills +
Red (?) +, Deep (?) +, Orange (?) +  and Yellow (?) +
oblong +  and spatulate +
0 cm0 mm <br />0 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 +
Proc. Biol. Soc. Wash. +
3;2;2;30 +
tuberlike +
0.3 cm3 mm <br />0.003 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
subcircular +
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
not sheathed +
distributed +
7.5 cm75 mm <br />0.075 m <br /> (17 cm170 mm <br />0.17 m <br />) +
mottled brown +, tipped yellow +, brown +  and yellow +
straight +
deciduous +  and persistent +
conspicuous +
with hairlike bristles +  and setose +
1 (?) +  and 3 (?) +
acicular +
0 cm0 mm <br />0 m <br /> (5 cm50 mm <br />0.05 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 /> (20 cm200 mm <br />0.2 m <br />) +
nearly smooth +  and tuberculate +
8 cm80 mm <br />0.08 m <br /> (10 cm100 mm <br />0.1 m <br />) +
segmented +
woody +  and succulent +
usually cream +  and pink +
Opuntia lindheimeri var. aciculata +
adventitious +
tuberlike +
epipetric +  and epiphytic +
Opuntia aciculata +
species +
dull +  and glossy +
yellow +  and paler +
segmented +
terrestrial;epiphytic or epipetric +