Echinomastus intertextus var. intertextus

Treatment appears in FNA Volume 4. Treatment on page 196. Mentioned on page 192.

Stems spheric when young, ovoid to ovoid-cyli ndric with age, appearing smooth and easily handled. Spines closely appressed, except for the porrect abaxial central spine, which 0.5–4 (–5) mm. 2n = 22.


Phenology: Flowering Feb–Apr; fruiting Apr–Jun.
Habitat: Desert grasslands and plains grasslands, grassy hills, bajadas, sometimes with junipers or oaks, on igneous substrates (rarely limestone)
Elevation: 1000-1900 m

Distribution

V4 369-distribution-map.gif

Ariz., N.Mex., Tex., Mexico (Chihuahua)

Discussion

Most published records of Echinomastus intertextus from central New Mexico, and many from southern New Mexico, probably pertain to var. dasyacanthus; the varieties replace each other geographically, but many populations in south-central New Mexico may be intermediate, containing long-, medium-, and short-spined individuals. Although not documented for Sonora, var. intertextus is known less than one kilometer from the Mexican border in southeastern Arizona.

Selected References

None.

Lower Taxa

None.
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
nearly +  and straight +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.9 cm9 mm <br />0.009 m <br /> (2 cm20 mm <br />0.02 m <br />) +
cushionlike +
circular to linear +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
deciduous +  and persistent +
hourglass--shaped +
0.9 cm9 mm <br />0.009 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
Allan D. Zimmerman +  and Bruce D. Parfitt +
(Engelmann) Britton & Rose +
hardened +
Echinocactus intertextus +
triangular +
curved +  and straight +
proliferating +
flattened +  and cylindric +
mucilaginous +
firm +  and hard +
connected +
divided +  and notched +
Ariz. +, N.Mex. +, Tex. +  and Mexico (Chihuahua) +
1000-1900 m +
not separating +
3 cm30 mm <br />0.03 m <br /> (3.8 cm38 mm <br />0.038 m <br />) +
3 cm30 mm <br />0.03 m <br /> (3.8 cm38 mm <br />0.038 m <br />) +
2.5 cm25 mm <br />0.025 m <br /> (3 cm30 mm <br />0.03 m <br />) +
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 />) +
2.5cm;3cm +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
pink;dull;brown;pink;dull;brown;green +
persistent +, long +  and deciduous +
6mm;15mm +
spheric +
succulent +
0.8 cm8 mm <br />0.008 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
obscured +  and obliterated +
Desert grasslands and plains grasslands, grassy hills, bajadas, sometimes with junipers or oaks, on igneous substrates (rarely limestone) +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
1.3 cm13 mm <br />0.013 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
deciduous +  and persistent +
rudimentary +
flat +  and terete +
nearly +  and microscopic +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
tuberculate +
fluted;spheric;depressed-spheric or club-shaped +
1.8 cm18 mm <br />0.018 m <br /> (2 cm20 mm <br />0.02 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
deciduous +  and persistent +
Flowering Feb–Apr +  and fruiting Apr–Jun. +
mucilaginous +
ridgelike +  and nipple--shaped +
1 +  and 20 +
triangular +
arillate +  and strophiolate +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
hemispheric;spheric +
Illustrated +
tipped reddish-brown +, tan +  and pale gray pinkish or reddish-brown +
curved +  and straight +
deciduous +  and persistent +
5mm +  and 13mm +
13 (?) +  and 25 (?) +
annulate-ridged +, hairlike +, daggerlike +, subulate +  and acicular +
0.3 cm3 mm <br />0.003 m <br /> (3.7 cm37 mm <br />0.037 m <br />) +
hard +  and rigid +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
decurrent +
unsegmented +
5cm;17cm +
ovoid +  and ovoid-cyli +
succulent +
3cm;10cm +
pink +  and bright red +
tuberculate +
Neolloydia intertexta +  and Sclerocactus intertextus +
adventitious +
tuberlike +
epipetric +  and epiphytic +
Echinomastus intertextus var. intertextus +
Echinomastus intertextus +
variety +
undulate +  and entire +
dull +  and glossy +
epiphytic;epiphytic;epiphytic +
not deep-seated +
barrel-shaped +  and spheric +