Sclerocactus mesae-verdae

(Boissevain & C. Davidson) L. D. Benson

Cact. Succ. J. (Los Angeles) 38: 54. 1966.

Common names: Mesa Verde fishhook cactus
IllustratedEndemicConservation concern
Basionym: Coloradoa mesae-verdae Boissevain & C. Davidson Colorado Cacti, 55, figs. 38–40. 1940 (as mesae verdae)
Synonyms: Echinocactus mesae-verdae (Boissevain & C. Davidson) L. D. Benson Ferocactus mesae-verdae (Boissevain & C. Davidson) N. P. Taylor Pediocactus mesae-verdae (Boissevain & C. Davidson) Arp
Treatment appears in FNA Volume 4. Treatment on page 203. Mentioned on page 198, 201.

Stems usually unbranched (occasionally 2–3-branched), usually pale green, depressed-spheric to ovoid, usually 3.2–11 (–18) × 3.8–8 (–10) cm, somewhat glaucous; ribs 13–17, tubercles inconspicuous. Spines not obscuring stem, usually only radial; radial spines 7–14 per areole, spreading, straw colored, 6–13 mm, less than 1 mm diam.; central spines 0 (–4) per areole (very rarely 1 abaxial central spine per areole hooked, 7–15 mm, brown). Flowers funnelform to campanulate, 1–3.5 × 1–3 cm; outer tepals with purple midstripes and cream or gold (rarely pink) margins, oblanceolate, 10–25 × 5–8 mm; inner tepals yellow to cream (rarely pink), oblanceolate, 15–30 × 5 mm; filaments pale-yellow or white; anthers yellow. Fruits indehiscent to irregularly dehiscent, green, becoming tan at maturity, short cylindric, (4–) 8–10 × 7–9 mm. Seeds black, 2.5–3 × 3–4 mm; testa cells convex but somewhat flattened apically.


Phenology: Flowering late Apr-early May.
Habitat: Alkaline, clay badlands, mat saltbush communities
Elevation: 1500-1700 m

Discussion

Of conservation concern.

Sclerocactus mesae-verdae is characterized by its relatively short radial spines and the general absence of central spines. In addition, no other Sclerocactus in Colorado or New Mexico has flowers that are cream to yellow (or pale pink).

Sclerocactus mesae-verdae is in the Center for Plant Conservation’s National Collection of Endangered Plants.

Selected References

None.

Lower Taxa

None.
... more about "Sclerocactus mesae-verdae"
cushionlike +
spine-bearing +
circular to linear +
deciduous +  and persistent +
connected +
elliptic +  and pyriform +
0.8 cm8 mm <br />0.008 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Kenneth D. Heil +  and J. Mark Porter +
(Boissevain & C. Davidson) L. D. Benson +
hardened +
Coloradoa mesae-verdae +
triangular +
pink +  and purplish-pink or black +
subulate +  and acicular +
proliferating +
flattened +  and cylindric +
Mesa Verde fishhook cactus +
mucilaginous +
notched +
Colo. +  and N.Mex. +
1500-1700 m +
not separating +
white +  and pale-yellow +
6 cm60 mm <br />0.06 m <br /> (7 cm70 mm <br />0.07 m <br />) +
1 cm10 mm <br />0.01 m <br /> (3.5 cm35 mm <br />0.035 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 />) +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
2.1 cm21 mm <br />0.021 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
indehiscent +  and irregularly dehiscent +
persistent +, long +  and deciduous +
8mm;10mm +
cylindric +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
Alkaline, clay badlands, mat saltbush communities +
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
oblanceolate +
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 +
0.7 cm7 mm <br />0.007 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
fimbriate +  and entire +
purple +, yellowish-brown +, reddish-brown +  and greenish lavender +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
deciduous +  and persistent +
Flowering late Apr-early May. +
mucilaginous +
abscission +
ridgelike +  and nipple--shaped +
Cact. Succ. J. (Los Angeles) +
greenish +  and white +
tuberculate +
triangular +
thin +  and broad +
arillate +  and strophiolate +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
shiny +  and glossy +
obovoid;pyriform;obovoid;pyriform;lenticular-reniform;comma--shaped;spheric +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Illustrated +, Endemic +  and Conservation concern +
straw colored +
curved +  and straight +
0mm +  and 1mm +
deciduous +  and persistent +
7 (?) +  and 14 (?) +
annulate-ridged +, hairlike +, daggerlike +, subulate +  and acicular +
0.6 cm6 mm <br />0.006 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
hard +  and rigid +
decurrent +
8 cm80 mm <br />0.08 m <br /> (10 cm100 mm <br />0.1 m <br />) +
pale green +
3.2cm;11cm +
depressed-spheric +  and ovoid +
succulent +
3.8cm;8cm +
creamy white +, yellow +, green +  and pink +
flat-topped +
tuberculate +
Echinocactus mesae-verdae +, Ferocactus mesae-verdae +  and Pediocactus mesae-verdae +
adventitious +
tuberlike +
epipetric +  and epiphytic +
Sclerocactus mesae-verdae +
Sclerocactus +
species +
1.5 cm15 mm <br />0.015 m <br /> (5 cm50 mm <br />0.05 m <br />) +
lanceolate to oblanceolate +
0.4 cm4 mm <br />0.004 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
flattened +  and convex +
dull +  and glossy +
papillate +
coalescent +
inconspicuous +
distinct +
epiphytic;epiphytic;epiphytic +
barrel-shaped +  and spheric +