Echinomastus warnockii

(L. D. Benson) Glass & R. A. Foster

Cact. Succ. J. (Los Angeles) 47: 222. 1975.

Endemic
Basionym: Neolloydia warnockii L. D. Benson Cact. Succ. J. (Los Angeles) 41: 186, fig. 4. 1969
Synonyms: Sclerocactus warnockii (L. D. Benson) N. P. Taylor
Treatment appears in FNA Volume 4. Treatment on page 195. Mentioned on page 193, 196.

Stems (3–) 4–10 × (2.5–) 3–6.5 cm; ribs 13; areoles 12–16 (–20) mm apart along ribs; areolar glands absent. Spines 12–20 per areole, tan to pale gray, pinkish, or yellowish-brown (rarely dull white), usually tipped paler (“frosted”) gray or blue-gray; radial spines 11–17 per areole; abaxial (shortest) radial spine 8–13 × 0.31–0.55 mm; adaxial and lateral (longest) radial spines (11–) 14–21 mm; central spines (0–) 1 (–4) per areole, abaxial central spine usually straight, rarely porrect, 11–18.5 mm (absent in some populations); adaxial central spines erect and loosely appressed against radial spines, 12–25 × 0.4–0.5 mm. Flowers 2.3–2.6 × 2.4–3.1 cm; inner tepals white or creamy white, sometimes with midstripes or faint midlines of pale green, greenish tan, dull pinkish brown, or olive-gray, 1–2 cm × 1.5–4.8 mm; stigma lobes green or yellow-green. Fruits indehiscent or disintegrating irregularly, coffin-shaped, ± 10 × 6–10 mm. 2n = 22.


Phenology: Flowering Feb–Mar; fruiting May–Jul.
Habitat: Chihuahuan desert scrub, low hills, gravelly bajadas, with sparse grasses and creosote bushes or in dense scrub with Texas false-agave, lechuguilla, and silverleaf, diverse substrates including limestone, tuff, and gypsum
Elevation: 500-1000(-1400) m

Discussion

Echinomastus warnockii is very difficult to distinguish from E. intertextus var. dasyacanthus, except that the former has green stigma lobes and indehiscent fruits. Flowers of E. warnockii taper to their bases, unlike the broad-based flowers of E. intertextus. The photograph accompanying L. D. Benson’s original diagnosis of E. warnockii portrayed the relatively distinctive E. mariposensis instead, resulting in persistent confusion.

Echinomastus warnockii almost certainly occurs in Mexico but no specimens were seen in herbaria of Mexico or the United States.

Selected References

None.

Lower Taxa

None.
... more about "Echinomastus warnockii"
1.1 cm11 mm <br />0.011 m <br /> (1.85 cm18.5 mm <br />0.0185 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
1.1 cm11 mm <br />0.011 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
1.4 cm14 mm <br />0.014 m <br /> (2.1 cm21 mm <br />0.021 m <br />) +
cushionlike +
circular to linear +
1.6 cm16 mm <br />0.016 m <br /> (2 cm20 mm <br />0.02 m <br />) +
deciduous +  and persistent +
hourglass--shaped +
1.2 cm12 mm <br />0.012 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
Allan D. Zimmerman +  and Bruce D. Parfitt +
(L. D. Benson) Glass & R. A. Foster +
hardened +
Neolloydia warnockii +
triangular +
curved +  and straight +
proliferating +
flattened +  and cylindric +
mucilaginous +
firm +  and hard +
connected +
divided +  and notched +
500-1000(-1400) m +
not separating +
2.3 cm23 mm <br />0.023 m <br /> (2.6 cm26 mm <br />0.026 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 />) +
2.4cm;3.1cm +
pink;dull;brown;pink;dull;brown;green +
disintegrating +  and indehiscent +
persistent +, long +  and deciduous +
coffin--shaped +
succulent +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
obscured +  and obliterated +
Chihuahuan desert scrub, low hills, gravelly bajadas, with sparse grasses and creosote bushes or in dense scrub with Texas false-agave, lechuguilla, and silverleaf, diverse substrates including limestone, tuff, and gypsum +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
1.5mm;4.8mm +
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 +
deciduous +  and persistent +
Flowering Feb–Mar +  and fruiting May–Jul. +
mucilaginous +
ridgelike +  and nipple--shaped +
Cact. Succ. J. (Los Angeles) +
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 +
tan +  and pale gray pinkish or yellowish-brown usually tipped paler gray or blue-gray +
curved +  and straight +
deciduous +  and persistent +
8mm +  and 13mm +
11 (?) +  and 17 (?) +
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 +
0.031 cm0.31 mm <br />3.1e-4 m <br /> (0.055 cm0.55 mm <br />5.5e-4 m <br />) +
decurrent +
unsegmented +
2.5 cm25 mm <br />0.025 m <br /> (3 cm30 mm <br />0.03 m <br />) +
4cm;10cm +
cylindric +, ovoid +  and spheric +
succulent +
3cm;6.5cm +
yellow-green +  and green +
tuberculate +
Sclerocactus warnockii +
adventitious +
tuberlike +
epipetric +  and epiphytic +
Echinomastus warnockii +
Echinomastus +
species +
undulate +  and entire +
dull +  and glossy +
epiphytic;epiphytic;epiphytic +
not deep-seated +
barrel-shaped +  and spheric +