Opuntia strigil

Engelmann

Proc. Amer. Acad. Arts 3: 290. 1856.

Endemic
Treatment appears in FNA Volume 4. Treatment on page 134. Mentioned on page 128.

Shrubs, erect to sprawling, to 1 m. Stem segments not easily detached, green, flattened, obovate to circular, 10–17 × 8.5–14.5 cm, nearly smooth, glabrous; areoles 7–10 per diagonal row across midstem segment, oblong to elliptic, 3–5 × 2.5–3.5 mm; wool yellowbrown to brown, aging gray. Spines 5–8 (–10) per areole, best developed in distal areoles, usually reflexed, spreading or some erect in marginal areoles, redbrown (often with darker annular rings) with yellow tips, aging blackish, straight or weakly curved, not or slightly flattened near bases; central spines 1 (–2), much longer and stouter, ± acicular, 10–40 mm. Glochids crowded in crescent at adaxial edge of areole and subapical tuft, radiating and well developed in old stem segments, yellow, to 3 mm. Flowers: inner tepals cream to lemon yellow, orangish abaxially on midvein areas, broadly spatulate-apiculate, 20–30 mm; filaments cream-yellow; anthers pale-yellow; style pale cream; stigma lobes pale greenish yellow. Fruits red, subspheric, 15–28 × 12–23 mm, fleshy, glabrous, spineless; umbilicus 4–5 mm deep; areoles 24–36. Seeds tan, subcircular to reniform, flattened, warped, 3–4 × 2.7–3.5 mm, 2 mm thick; girdle protruding 0.5–0.8 mm. 2n = 22, 44.


Phenology: Flowering spring (Apr–May).
Habitat: Desert scrub, limestone hills and plains
Elevation: 900-1400 m

Discussion

Opuntia strigil is reminiscent of a brown-spined form of O. chlorotica.

Selected References

None.

Lower Taxa

None.
... more about "Opuntia strigil"
pale-yellow +
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 /> (0.5 cm5 mm <br />0.005 m <br />) +
24 +  and 36 +
oblong +  and elliptic +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Donald J. Pinkava +
Engelmann +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
proliferating +
flattened +  and cylindric +
900-1400 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 +
straight +
indehiscent +
persistent +, long +  and deciduous +
15mm;28mm +
proliferating +
tuberculate +  and smooth +
subspheric +
1.2 cm12 mm <br />0.012 m <br /> (2.3 cm23 mm <br />0.023 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
radiating +  and crowded +
0 cm0 mm <br />0 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
foveolate +  and reticulate +
Desert scrub, limestone hills and plains +
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 +
Proc. Amer. Acad. Arts +
3;2;2;30 +
tuberlike +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
warped;flattened;subcircular;reniform +
2 +  and 3-4×2.7-3.5 +
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 />) +
blackish +  and redbrown +
curved +  and straight +
deciduous +  and persistent +
erect +, some +, spreading +  and reflexed +
conspicuous +
with hairlike bristles +  and setose +
5 (?) +  and 8 (?) +
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 /> (17 cm170 mm <br />0.17 m <br />) +
nearly smooth +  and tuberculate +
8.5 cm85 mm <br />0.085 m <br /> (14.5 cm145 mm <br />0.145 m <br />) +
segmented +
woody +  and succulent +
yellow +  and pale greenish +
adventitious +
tuberlike +
epipetric +  and epiphytic +
Opuntia strigil +
species +
dull +  and glossy +
segmented +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
terrestrial;epiphytic or epipetric +
erect +  and sprawling +
gray +, yellowbrown +  and brown +