Opuntia atrispina

Griffiths

Rep. (Annual) Missouri Bot. Gard. 21: 172, plate 26 (lower). 1910.

Endemic
Treatment appears in FNA Volume 4. Treatment on page 137. Mentioned on page 128.

Shrubs, erect to sprawling, 0.5–1 m. Stem segments not easily detached, green, flattened, obovate to circular, 10–15 × 7.5–12 cm, nearly smooth, glabrous; areoles 5–7 per diagonal row across midstem segment, ovate or oblong to obovate, 3–5 mm; wool tan. Spines 4–7 per areole, mostly in distal areoles, black to redbrown with conspicuous brown to yellow tips, fading gray; longer spines ascending, usually straight, acicular, terete, 25–35 mm; 1–2 smaller spines deflexed, chalky white, to 10 mm; 0–4 additional very small spines. Glochids in bushy crescent at adaxial edge of areole and dense subapical tuft, yellow to brown, aging blackish, of unequal lengths, to 5 mm. Flowers: inner tepals yellow throughout, quickly fading to apricot, 25–30 mm; filaments and anthers yellow; style whitish; stigma lobes greenish yellow to yellow. Fruits red-purple, green-yellow interior, spheric-obovoid to pyriform, 15–20 × 12 mm, fleshy, glabrous, spineless; areoles 20–25. Seeds tan to gray, subcircular, 3–4 mm diam; girdle narrowly protruding. 2n = 22.


Phenology: Flowering spring.
Habitat: Grasslands, shrublands, limestone hills
Elevation: 400-700 m

Discussion

Opuntia atrispina has been reported from Coahuila, Mexico (H. Bravo-H. and H. Sánchez-M. 1978–1991, vol. 1), but has not been confirmed by the author.

Selected References

None.

Lower Taxa

None.
... more about "Opuntia atrispina"
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 />) +
deciduous +  and persistent +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
20 +  and 25 +
oblong +  and obovate +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
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 +
400-700 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-yellow +
straight +
indehiscent +
persistent +, long +  and deciduous +
15mm;20mm +
proliferating +
tuberculate +  and smooth +
spheric-obovoid +  and pyriform +
12 cm120 mm <br />0.12 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 /> (0.5 cm5 mm <br />0.005 m <br />) +
foveolate +  and reticulate +
Grasslands, shrublands, limestone hills +
oblong +  and spatulate +
2.5 cm25 mm <br />0.025 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 +
terete +  and acicular +
2.5 cm25 mm <br />0.025 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
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. +
ridgelike +  and nipple--shaped +
Rep. (Annual) Missouri Bot. Gard. +
3;2;2;30 +
tuberlike +
Tan (?) +  and Gray (?) +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 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 />) +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
not sheathed +
7.5 cm75 mm <br />0.075 m <br /> (17 cm170 mm <br />0.17 m <br />) +
fading gray +, black +  and redbrown +
deciduous +  and persistent +
conspicuous +
with hairlike bristles +  and setose +
Additional (?) +, 4 (?) +  and 7 (?) +
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 +
60 cm600 mm <br />0.6 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
10 cm100 mm <br />0.1 m <br /> (15 cm150 mm <br />0.15 m <br />) +
nearly smooth +  and tuberculate +
7.5 cm75 mm <br />0.075 m <br /> (12 cm120 mm <br />0.12 m <br />) +
segmented +
woody +  and succulent +
greenish yellow +  and yellow +
adventitious +
tuberlike +
epipetric +  and epiphytic +
Opuntia atrispina +
species +
dull +  and glossy +
brown +  and yellow +
segmented +
terrestrial;epiphytic or epipetric +
erect +  and sprawling +